Your Cat dealer can program some of the values in the monitoring system to different trip points if youd like. Have A 2001 Ih Tandem Dump Coming In To The Shop, Only Has 25lbs Oil Pressure.happened All At Once Customer Said. I used to get 27 to 30 psi. If a wastegate is fitted with springs rated to 7PSI, it will open when it receives 7PSI of pressure to the actuator. WebCat C12 Diesel Marine Propulsion Engines, with ratings of 340-490 bhp (254-366 bkW) at 1800-2300 rpm, meet IMO II emission standards with the exception of the 497 mhp (490 bhp) rating at 2300 rpm which meets IMO I emissions standards. Have A 2001 Ih Tandem Dump Coming In To The Shop, Only Has 25lbs Oil Pressure.happened All At Once Customer Said. When the engine is stopped, the absence of boost pressure allows the plunger to rise to the open position, which allows condensation from the aftercooler to drain out. WebYou can easily increase boost pressure over wastegate spring pressure by using a boost controller, but you cant achieve a maximum boost level under the wastegates spring pressure. I'm in the uk and have a CAT C12 in a tipper -dump truck. since that time the engine has been overhauled with new pistons, head, injectors, turbo, cam followers, and manifold pressure sensor. The boost ran about 26.6 going up the mountains north of Redding. That is well above the green band. When the engine is stopped, the absence of boost pressure allows the plunger to rise to the open position, which allows condensation from the aftercooler to drain out. WebOur large selection of Caterpillar factory printed manuals has in-depth information suitable for any job, big or small. WebThe turbocharger boost pressure forces plunger (4) to move down to valve seat (5). I can barely keep a 42k load going 70. it will see 23-28 psi from 1500 rpm's to 1800 and 10-20 psi from 1200 to 1350 ish. Of course, boost pressure is a function of engine load. Still no power. I'm in the uk and have a CAT C12 in a tipper -dump truck. WebThe turbocharger boost pressure forces plunger (4) to move down to valve seat (5). Anyway, the Cat C12 12.0L engine makes up to 445 horsepower and 1,650 lb-ft. Its not quite as capable as the larger C15 or the C13 successor. It's only got about 300,000 miles on it, but it doesn't seem to boost until about 1700rpm. I have a 03 mbl c12 is it normal for the boost to very from 20-28 psi through the whole time while climbing a grade in 9th gear? May 14, 2007. It's only got about 300,000 miles on it, but it doesn't seem to boost until about 1700rpm. Check "plumbing" between turbo and CAC and CAC and engine. Its operating range is 1,200 to 2,100 RPM. What brand is it? Keep in mind air box pressure is a function of turbocharger boost pressure, and what a helmsman needs is reference to normal boost pressure at a given engine RPM and load. Two things to start with: 1. Keep in mind air box pressure is a function of turbocharger boost pressure, and what a helmsman needs is reference to normal boost pressure at a given engine RPM and load. The C12 takes full advantage of the electronically controlled unit injection fuel system, resulting in an environmentally friendly engine with outstanding performance and fuel economy. Manifold Air Pressure (MAP) Sensor provides a cost savings advantage, significantly cutting repair costs. The plunger must close against the seat at a pressure of 27.5 kPa (4 psi). Fuel Still no power. Manifold Air Pressure (MAP) Sensor provides a cost savings advantage, significantly cutting repair costs. (28) Boost pressure sensor (29) Boost pressure The injection pump, the fuel lines, and the nozzles that are used in the traditional Caterpillar diesel engines have been replaced with an electronically controlled, mechanically actuated electronic unit injector in I've seen it touch 24 psi briefly on occasion. Cat C12 diesel engines weigh in at 2,070 lbs, so uses are mostly limited to larger trucks, buses, and machinery. As kind of an experiment I turned the MP-8 on and boost hit 31 - it dropped two gears but when it shifted back into 5th the alarm and check engine light came on. I have checked for leaks in intercooler and pipes. Check "plumbing" between turbo and CAC and CAC and engine. Fuel Fuel pressure is normally 70-90 psi. WebProviding reliable power for applications requiring 242-336 bkW (325-450 bhp), Cat C11 Industrial Diesel Engines are proven performers, providing greater options for customers who require powerful flexibility for their equipment. If you have an exhaust brake, VERIFY that the butterfly valve is not stuck shut. Something as simple as a broken hose clamp could allow boost pressure to blow the hose off. However, normal oil pressure is around 50 psi. I have checked for leaks in intercooler and pipes. This started about 8 month ago. My 2002 c12 does not have the power it used to. May 14, 2007. That's correct according to the techs at the CAT dealer and consistent with what gruse and birdhunter have observed. Web102-03 Boost Pressure Sensor Open Circuit 25 253-02 Check Customer or System Parameters 56 102-04 Boost Pressure Sensor Short Circuit 25 253-11 Check Transmission Customer Parameters 56 105-00 High Intake Manifold Temp Warning 64 253-14 Truck Manufacturer Parameter Not Programmed 56 Only show this user. Two things to start with: 1. 2. no mpg loss at highway speed. utilizing said port. I have a 03 mbl c12 is it normal for the boost to very from 20-28 psi through the whole time while climbing a grade in 9th gear? I have checked for leaks in intercooler and pipes. WebProviding reliable power for applications requiring 242-336 bkW (325-450 bhp), Cat C11 Industrial Diesel Engines are proven performers, providing greater options for customers who require powerful flexibility for their equipment. I used to get 27 to 30 psi. However, normal oil pressure is around 50 psi. since that time the engine has been overhauled with new pistons, head, injectors, turbo, cam followers, and manifold pressure sensor. However, normal oil pressure is around 50 psi. Normal coolant temp is 185-190 but will rise to 205-210 when running WFO. It doesn't pull in 10th much at all. The plunger must close against the seat at a pressure of 27.5 kPa (4 psi). WebDetroit Diesel manufactured the engine with a boost pressure port prior to the intercooler core. However, normal oil pressure is around 50 psi. Your Cat dealer can program some of the values in the monitoring system to different trip points if youd like. To add another data point to your original question about boost - our C12 typically generates 22 psi boost under full load-full speed conditions.

fuel pressure with mechanical gauge at filter housing is normal. My 2002 c12 does not have the power it used to. Your Cat dealer can program some of the values in the monitoring system to different trip points if youd like. WebCat C12 Diesel Marine Propulsion Engines, with ratings of 578-609 mhp (570-600 bhp) at 2300 rpm, meet IMO I emission standards. 2. The boost ran about 26.6 going up the mountains north of Redding. Keep in mind air box pressure is a function of turbocharger boost pressure, and what a helmsman needs is reference to normal boost pressure at a given engine RPM and load. It doesn't pull in 10th much at all. I can barely keep a 42k load going 70. it will see 23-28 psi from 1500 rpm's to 1800 and 10-20 psi from 1200 to 1350 ish. Of course, boost pressure is a function of engine load. The plunger must close against the seat at a pressure of 27.5 kPa (4 psi). However, normal oil pressure is around 50 psi. Caterpillar Fault Code manuals provide complete information for finding and eliminating flash codes. As kind of an experiment I turned the MP-8 on and boost hit 31 - it dropped two gears but when it shifted back into 5th the alarm and check engine light came on. If a wastegate is fitted with springs rated to 7PSI, it will open when it receives 7PSI of pressure to the actuator. Running about 60 mph on cruise control it would shift down one gear and hold about 55 mph. There is also a wide range of optional Running about 60 mph on cruise control it would shift down one gear and hold about 55 mph. I only get 12psi to 15 psi of manifold pressure now. If you have an exhaust brake, VERIFY that the butterfly valve is not stuck shut. Are these 700HP C-12? Web102-03 Boost Pressure Sensor Open Circuit 25 253-02 Check Customer or System Parameters 56 102-04 Boost Pressure Sensor Short Circuit 25 253-11 Check Transmission Customer Parameters 56 105-00 High Intake Manifold Temp Warning 64 253-14 Truck Manufacturer Parameter Not Programmed 56 There is also a wide range of optional Its operating range is 1,200 to 2,100 RPM. WebCat C12 Diesel Marine Propulsion Engines, with ratings of 340-490 bhp (254-366 bkW) at 1800-2300 rpm, meet IMO II emission standards with the exception of the 497 mhp (490 bhp) rating at 2300 rpm which meets IMO I emissions standards. Brett katlen86 Members 11 posts Report

That's correct according to the techs at the CAT dealer and consistent with what gruse and birdhunter have observed. Anyway, the Cat C12 12.0L engine makes up to 445 horsepower and 1,650 lb-ft. Its not quite as capable as the larger C15 or the C13 successor. WebAir Inlet Manifold Pressure Sensor, fits Caterpillar C12 Engines. WebOur large selection of Caterpillar factory printed manuals has in-depth information suitable for any job, big or small. Have A 2001 Ih Tandem Dump Coming In To The Shop, Only Has 25lbs Oil Pressure.happened All At Once Customer Said. WebYour Cat dealer can program some of the values in the monitoring system to different trip points if youd like. No obvious cracks around turbo. Cat C12 diesel engines weigh in at 2,070 lbs, so uses are mostly limited to larger trucks, buses, and machinery. I've seen it touch 24 psi briefly on occasion. As kind of an experiment I turned the MP-8 on and boost hit 31 - it dropped two gears but when it shifted back into 5th the alarm and check engine light came on. I only get 12psi to 15 psi of manifold pressure now. Anyway, the Cat C12 12.0L engine makes up to 445 horsepower and 1,650 lb-ft. Its not quite as capable as the larger C15 or the C13 successor. My 2002 c12 does not have the power it used to. What brand is it? When was it last lubed? WebAuxiliary Pressure #1 : Voltage Above Normal Auxiliary Pressure Sensor : Voltage Above Normal 1387-4 1835-4 Auxiliary Pressure #1 : Voltage Below Normal Auxiliary Pressure Sensor : Voltage Below Normal 1761-3 3130-3 Aftertreatment 1 Diesel Exhaust Fluid Tank Level : Voltage Above Normal Step-by-step diagnostics Troubleshooting procedures Wire diagrams Pinouts Ohm and voltage readings and more! WebAir Inlet Manifold Pressure Sensor, fits Caterpillar C12 Engines. Normal coolant temp is 185-190 but will rise to 205-210 when running WFO. Two things to start with: 1. (28) Boost pressure sensor (29) Boost pressure The injection pump, the fuel lines, and the nozzles that are used in the traditional Caterpillar diesel engines have been replaced with an electronically controlled, mechanically actuated electronic unit injector in That is well above the green band. For accurate air intake system pressure readings, the MAP sensor will measure the amount of pressure inside the intake manifold. Fuel pressure is normally 70-90 psi. since that time the engine has been overhauled with new pistons, head, injectors, turbo, cam followers, and manifold pressure sensor. (28) Boost pressure sensor (29) Boost pressure The injection pump, the fuel lines, and the nozzles that are used in the traditional Caterpillar diesel engines have been replaced with an electronically controlled, mechanically actuated electronic unit injector in I have a 03 mbl c12 is it normal for the boost to very from 20-28 psi through the whole time while climbing a grade in 9th gear? That's correct according to the techs at the CAT dealer and consistent with what gruse and birdhunter have observed. If a wastegate is fitted with springs rated to 7PSI, it will open when it receives 7PSI of pressure to the actuator. There is also a wide range of optional To add another data point to your original question about boost - our C12 typically generates 22 psi boost under full load-full speed conditions. Its operating range is 1,200 to 2,100 RPM. No obvious cracks around turbo. Normal coolant temp is 185-190 but will rise to 205-210 when running WFO. Brett katlen86 Members 11 posts Report This started about 8 month ago. I used to get 27 to 30 psi. Normal coolant temp is 185-190 but will rise to 205-210 when running WFO. Normal coolant temp is 185-190 but will rise to 205-210 when running WFO. It's only got about 300,000 miles on it, but it doesn't seem to boost until about 1700rpm. fuel pressure with mechanical gauge at filter housing is normal. fuel pressure with mechanical gauge at filter housing is normal. Webeverything under the valve covers including valve adjustment measurements, visual inspection of rods, rockers, valves, and injectors, and pressure tested fuel system. I'm in the uk and have a CAT C12 in a tipper -dump truck. No obvious cracks around turbo.

no mpg loss at highway speed. To add another data point to your original question about boost - our C12 typically generates 22 psi boost under full load-full speed conditions. 2. Fuel pressure is normally 70-90 psi. It is very flat below that, and doesn't pull very well. I only get 12psi to 15 psi of manifold pressure now. I've seen it touch 24 psi briefly on occasion. WebCat C12 Diesel Marine Propulsion Engines, with ratings of 340-490 bhp (254-366 bkW) at 1800-2300 rpm, meet IMO II emission standards with the exception of the 497 mhp (490 bhp) rating at 2300 rpm which meets IMO I emissions standards. WebOur large selection of Caterpillar factory printed manuals has in-depth information suitable for any job, big or small. WebAir Inlet Manifold Pressure Sensor, fits Caterpillar C12 Engines. However, normal oil pressure is around 50 psi. Normal coolant temp is 185-190 but will rise to 205-210 when running WFO. WebDetroit Diesel manufactured the engine with a boost pressure port prior to the intercooler core. System pressure readings, the MAP Sensor will measure the amount of pressure to blow the hose.... Boost - our C12 typically generates 22 psi boost under full load-full conditions! Pressure inside the intake manifold housing is normal Caterpillar factory printed manuals Has in-depth information suitable for any job big. Power it used to a function of engine load diesel engines weigh in at 2,070 lbs, so are... Is around 50 psi brake, VERIFY that the butterfly valve is not stuck shut measure the of. Does not have the power it used to information for finding and eliminating codes... ) to move down to valve seat ( 5 ) could allow boost pressure prior... The MAP Sensor will measure the amount of pressure inside the intake manifold is but. 'Ve seen it touch 24 psi briefly on occasion 4 psi ) it 24... Engine load to different trip points if youd like pressure ( MAP ) Sensor provides a cost savings advantage significantly. Savings advantage, significantly cutting repair costs points if youd like webyour Cat dealer can program of! Cat dealer can program some of the values in the uk and have Cat. Manifold pressure now in-depth information suitable for any job, big or small Sensor measure. Hose off touch 24 psi briefly on occasion no mpg loss at highway speed the mountains north Redding! Some of the values in the uk and have cat c12 normal boost pressure Cat C12 in a -dump... 4 ) to move down to valve seat ( 5 ) advantage, cutting... Fault Code manuals provide complete information for finding and eliminating flash codes complete information finding! Dealer and consistent with what gruse and birdhunter have observed turbo and CAC and engine trucks, buses, does... System to different trip points if youd like Ih Tandem Dump Coming in to the techs at Cat! Fuel pressure with mechanical gauge at filter housing is normal exhaust cat c12 normal boost pressure, VERIFY that butterfly! Simple as a broken hose clamp could allow boost pressure forces plunger ( 4 ) to down... Or small CAC and CAC and CAC and CAC and engine very well uses are mostly to... Cruise control it would shift down one gear and hold about 55 mph port prior the. Map ) Sensor provides a cost savings advantage, significantly cutting repair costs finding and flash. Pressure ( MAP ) Sensor provides a cost savings advantage, significantly cutting repair costs significantly cutting repair.! It touch 24 psi briefly on occasion to different trip points if youd like the intercooler core brett Members... Down one gear and hold about 55 mph 185-190 but will rise to 205-210 when WFO... At filter housing is normal system pressure readings, the MAP Sensor will measure the amount pressure... 8 month ago valve is not stuck shut going up the mountains north of Redding oil! At All prior to the actuator '' between turbo and CAC and CAC and CAC and CAC and.... Coming in to the actuator mpg loss at highway speed boost pressure port prior to intercooler! 205-210 when running WFO significantly cutting repair costs MAP Sensor will measure the amount of pressure to the at. I 'm in the monitoring system to different trip points if youd like it would shift down one and... Does n't pull in 10th much at All about boost - our C12 typically generates psi! Code manuals provide complete information for finding and eliminating flash codes pressure with mechanical gauge at filter cat c12 normal boost pressure normal. Sensor, fits Caterpillar C12 engines katlen86 Members 11 posts Report This started about month! Our C12 typically generates 22 psi boost under full load-full speed conditions system pressure readings, the MAP Sensor measure. Boost ran about 26.6 going up the mountains north of Redding 7PSI of pressure to the... > no mpg loss at highway speed typically generates 22 psi boost under full load-full speed conditions 's. The techs at the Cat dealer and consistent with what gruse and birdhunter have observed down! C12 diesel engines weigh in at 2,070 lbs, so uses are mostly to. Will measure the amount of pressure inside the intake manifold very flat below that, and machinery system readings... Mpg loss at highway speed the amount of pressure inside the intake.. Pressure ( MAP ) Sensor provides a cost savings advantage, significantly cutting costs! 7Psi of pressure inside the intake manifold plunger must close against the seat at a of... Finding and eliminating flash codes 22 psi boost under full load-full speed conditions Fault... Hose off normal oil pressure is a function of engine load trip points youd! Springs rated to 7PSI, it will open when it receives 7PSI of pressure to blow the hose.. Verify that the butterfly valve is not stuck shut a tipper -dump truck course, boost pressure blow! Point to your original question about boost - our C12 typically generates 22 psi boost under full load-full conditions... A cost savings advantage, significantly cutting repair costs your original question about boost - our C12 generates. My 2002 C12 does not have the power it used to n't pull cat c12 normal boost pressure 10th much at All it. Very flat below that, and machinery pressure inside the intake manifold C12 diesel engines weigh in at 2,070,. Posts Report This started about 8 month ago wastegate is fitted with springs rated to 7PSI, it will when. Mountains north of Redding only got about 300,000 miles on it, but does. Accurate Air intake system pressure readings, the MAP Sensor will measure the amount pressure! A function of engine load webthe turbocharger boost pressure port prior to the actuator gruse and have... Fits Caterpillar C12 engines rise to 205-210 when running WFO larger trucks,,... About 8 month ago to larger trucks, buses, and machinery with a pressure! Inside the intake manifold - our C12 typically generates 22 psi boost under full load-full speed.. Boost cat c12 normal boost pressure our C12 typically generates 22 psi boost under full load-full speed conditions only. Only get 12psi to 15 psi of manifold pressure Sensor, fits Caterpillar C12.. N'T pull very well 's correct according to the Shop, only Has oil... Exhaust brake, VERIFY that the butterfly valve is not stuck shut between turbo and CAC and CAC engine! 'S correct according to the actuator you have an exhaust brake, VERIFY that the butterfly valve is stuck. To the techs at the Cat dealer can program some of the values in the uk and have 2001! ( 4 psi ) is a function of engine load in at 2,070 lbs, so uses mostly! But it does n't pull very well not have the power it used to only Has 25lbs oil Pressure.happened at! Leaks in intercooler and pipes > < br > < br > < br fuel! Psi briefly on occasion Tandem Dump Coming in to the techs at the Cat dealer and consistent with what and! It touch 24 psi briefly on occasion n't seem to boost until about 1700rpm in the. 'S correct according to the techs at the Cat dealer can program of..., and machinery Report This started about 8 month ago repair costs it, but it n't! Manuals Has in-depth information suitable for any job, big or small does... Boost pressure forces plunger ( 4 ) to move down to valve seat 5. > < br > < br > fuel pressure with mechanical gauge at filter is. This started about 8 month ago will rise to 205-210 when running WFO is around 50 psi hose.... Dealer and consistent with what gruse and birdhunter have observed brake, VERIFY that the butterfly valve not... To 205-210 when running WFO engine load MAP ) Sensor provides a cost savings,... The engine with a boost pressure port prior to the Shop, only Has 25lbs oil Pressure.happened at... Rise to 205-210 when running WFO manifold pressure now going up the mountains north of Redding Pressure.happened All at Customer... Going up the mountains north of Redding of manifold pressure Sensor, Caterpillar... Loss at highway speed techs at the Cat dealer and consistent with what gruse and have... According to the Shop, only Has 25lbs oil Pressure.happened All at Customer! To your original question about boost - our C12 typically generates 22 boost. Seem to boost until about 1700rpm with what gruse and birdhunter have observed must. Tipper -dump truck the engine with a boost pressure forces plunger ( 4 ) move. Open when it receives 7PSI of pressure to the intercooler core about boost - our typically. Printed manuals Has in-depth information suitable for any job, big or small hose off > < br > mpg... - our C12 typically generates 22 psi boost under full load-full speed conditions pull! Code manuals provide complete information for finding and eliminating flash codes pressure Sensor, fits Caterpillar C12 engines the Sensor! As a broken hose clamp could allow boost pressure to the intercooler core '' between turbo and CAC CAC. Is a function of engine load will open when it receives 7PSI of inside... With mechanical gauge at filter housing is normal it is very flat below that, and machinery against seat... Diagnostics Troubleshooting procedures Wire diagrams Pinouts Ohm and voltage readings and more Members 11 posts Report started. Will rise to 205-210 when running WFO pressure now the techs at the Cat dealer can program some the. Highway speed Shop, only Has 25lbs oil Pressure.happened All at Once Customer Said to... 60 mph on cruise control it would shift down one gear and hold 55. Techs at the Cat dealer and consistent with what gruse and birdhunter have observed that correct! C12 engines housing is normal readings, the MAP Sensor will measure the of!
Step-by-step diagnostics Troubleshooting procedures Wire diagrams Pinouts Ohm and voltage readings and more! WebYou can easily increase boost pressure over wastegate spring pressure by using a boost controller, but you cant achieve a maximum boost level under the wastegates spring pressure. Cat C12 diesel engines weigh in at 2,070 lbs, so uses are mostly limited to larger trucks, buses, and machinery. Webeverything under the valve covers including valve adjustment measurements, visual inspection of rods, rockers, valves, and injectors, and pressure tested fuel system. Of course, boost pressure is a function of engine load. Still no power. Only show this user. What brand is it? Brett katlen86 Members 11 posts Report The boost ran about 26.6 going up the mountains north of Redding. It doesn't pull in 10th much at all. WebThe turbocharger boost pressure forces plunger (4) to move down to valve seat (5). Are these 700HP C-12? For accurate air intake system pressure readings, the MAP sensor will measure the amount of pressure inside the intake manifold. WebDetroit Diesel manufactured the engine with a boost pressure port prior to the intercooler core. When was it last lubed? The C12 takes full advantage of the electronically controlled unit injection fuel system, resulting in an environmentally friendly engine with outstanding performance and fuel economy. WebYour Cat dealer can program some of the values in the monitoring system to different trip points if youd like. Step-by-step diagnostics Troubleshooting procedures Wire diagrams Pinouts Ohm and voltage readings and more! utilizing said port. WebCat C12 Diesel Marine Propulsion Engines, with ratings of 578-609 mhp (570-600 bhp) at 2300 rpm, meet IMO I emission standards. That is well above the green band. WebCat C12 Diesel Marine Propulsion Engines, with ratings of 578-609 mhp (570-600 bhp) at 2300 rpm, meet IMO I emission standards. Manifold Air Pressure (MAP) Sensor provides a cost savings advantage, significantly cutting repair costs. Something as simple as a broken hose clamp could allow boost pressure to blow the hose off. WebYou can easily increase boost pressure over wastegate spring pressure by using a boost controller, but you cant achieve a maximum boost level under the wastegates spring pressure. Running about 60 mph on cruise control it would shift down one gear and hold about 55 mph. When the engine is stopped, the absence of boost pressure allows the plunger to rise to the open position, which allows condensation from the aftercooler to drain out. For accurate air intake system pressure readings, the MAP sensor will measure the amount of pressure inside the intake manifold. utilizing said port. May 14, 2007. Webeverything under the valve covers including valve adjustment measurements, visual inspection of rods, rockers, valves, and injectors, and pressure tested fuel system. Caterpillar Fault Code manuals provide complete information for finding and eliminating flash codes. WebAuxiliary Pressure #1 : Voltage Above Normal Auxiliary Pressure Sensor : Voltage Above Normal 1387-4 1835-4 Auxiliary Pressure #1 : Voltage Below Normal Auxiliary Pressure Sensor : Voltage Below Normal 1761-3 3130-3 Aftertreatment 1 Diesel Exhaust Fluid Tank Level : Voltage Above Normal It is very flat below that, and doesn't pull very well. WebProviding reliable power for applications requiring 242-336 bkW (325-450 bhp), Cat C11 Industrial Diesel Engines are proven performers, providing greater options for customers who require powerful flexibility for their equipment. WebYour Cat dealer can program some of the values in the monitoring system to different trip points if youd like. Caterpillar Fault Code manuals provide complete information for finding and eliminating flash codes. Only show this user. no mpg loss at highway speed. WebAuxiliary Pressure #1 : Voltage Above Normal Auxiliary Pressure Sensor : Voltage Above Normal 1387-4 1835-4 Auxiliary Pressure #1 : Voltage Below Normal Auxiliary Pressure Sensor : Voltage Below Normal 1761-3 3130-3 Aftertreatment 1 Diesel Exhaust Fluid Tank Level : Voltage Above Normal Are these 700HP C-12? Web102-03 Boost Pressure Sensor Open Circuit 25 253-02 Check Customer or System Parameters 56 102-04 Boost Pressure Sensor Short Circuit 25 253-11 Check Transmission Customer Parameters 56 105-00 High Intake Manifold Temp Warning 64 253-14 Truck Manufacturer Parameter Not Programmed 56 When was it last lubed? It is very flat below that, and doesn't pull very well. The C12 takes full advantage of the electronically controlled unit injection fuel system, resulting in an environmentally friendly engine with outstanding performance and fuel economy. Something as simple as a broken hose clamp could allow boost pressure to blow the hose off. This started about 8 month ago. If you have an exhaust brake, VERIFY that the butterfly valve is not stuck shut. Check "plumbing" between turbo and CAC and CAC and engine. Fuel I can barely keep a 42k load going 70. it will see 23-28 psi from 1500 rpm's to 1800 and 10-20 psi from 1200 to 1350 ish.

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