Cat® 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. Vern, may I suggest before going to a great deal of cost on your engine. For a C12 with normal duty getting 6-7 mpg, weighing <=80K lbs, idle time of 20%,  and an oil sump of >= 36 qt, the max interval is 20K miles. Page 1 of 2 1 2 Next > Apr 27, 2013 #1. ingedavi Light Load Member. When the calculated engine exhaust gas temperature … For a C12 with normal duty getting 6-7 mpg, weighing <=80K lbs, idle time of 20%, and an oil sump of >= 36 qt, the max interval is 20K miles. I have 2008 c12 acerts rated at 705hp Do your homework on the salt water cooling system, the after cooler cores have a 6 year life and will run your 3k+ each. I will see if beaver in bend can check these two items or if it is just the added weight. Cat Engine Expert. All Cat Diesel Truck engines have Fuel Transfer Pumps, it is good idea to know how they work and how to change them. The fuel pressure range o the C12 engine is 70 to 90 psi. If a Cat Diesel Engine doesn't have good fuel pressure it can cause a lot of performance related issues. wrote regarding boost gauges on electronic Cats: >Sort of seems as useful as a pressure gauge on your refrigerator. Thanks for the info. The turbocharger boost pressure forces plunger (4) to move down to valve seat (5). 102-03 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 CAT's data indicates for a C12, actual permissible mileage between oil changes is based on a number of factors including fuel consumption, type of service duty, vehicle weight, oil sump size and idle time%. I have checked with a cat shop and tbey said to put a meter on the air filter side as it could be a leak in the turbo hoses. I have a C7 cat [kal85083] with a code 102-3 boost pressure high[25].I used a lap top with cat soft ware to retrieve this code.It is not an active code. At high RPM's the fuel pressure is around 85-90 psi. I am happy to assist. I have a 475hp MXS. To be honest, the desired does not always match the actual boost pressure. Of course, boost pressure is a function of engine load. Are these 700HP C-12? At high rpm it would be around 42. Normal coolant temp is 185-190 but will rise to 205-210 when running WFO. Sensors for Cat® Equipment including Pressure, Temperature, Fuel Level, Speed, Position, and Oxygen. The only way you get max HP is with the cruise engaged. Customer complains that truck goes into limp mo … read more. Vocational, Technical or Trade Scho. However, normal oil pressure is around 50 psi. If a High Boost Pressure Event occurs, the wastegate is closing properly. Discussion in 'Trucks [ Eighteen Wheelers ]' started by ingedavi, Apr 27, 2013. After 15 seconds, a High Boost Pressure Event should result. The Cat ® C18 Industrial Diesel Engine is offered in ratings ranging from 429-522 bkW (575-700 bhp)@ 1800-1900 rpm. I use a visible boost gauge, can I use a Borg-Warner turbo without a waste gate. Hi, have info off Cat SIS for the C-12 oil pressure. Caterpillar Engine Expert. Cat c12 2ks 2002 turbo options. Fuel pressure is normally 70-90 psi. The plunger must close against the seat at a pressure of 27.5 kPa (4 psi). At idle or low RPM's the fuel pressure is around 70-75. to look for ( low power/poor response to foot feed. ) It sounds like low, Jerry, here is some info. 10,221 satisfied customers. When going downhill, coasting in gear at 1200 rpm I'm having a boost reading of 5 psi and the gauge will twitch one time. Around 1500 or below around 35. Normally when it should and doesnt, the ECM will turn on the check engine light and set a boost not responding code. The reason I ask is that it is time to replace the original cat c12 turbo, and I'm look … This is the complete list of Caterpillar fault codes. current above normal or shorted to ground, active regeneration inhibited due to low exhaust temperature, ATD filter temperature sensor voltage above normal, ATD filter temperature sensor voltage below normal, ATD differntial pressure, high filter restriction, ATD differential pressure voltage above normal, ATD differential pressure voltage below normal, ATD differential pressure , filter restricted, ATD exhaust gas temperature 2 data drifted high, ATD exhaust gas temperature 2 voltage above normal, ATD exhaust gas temperature 2 voltage below normal, aftertreatment fuel pressure sensor voltage above normal, aftertreatment fuel pressure sensor voltage below normal. You may >have about as much control. Customer reply replied 6 years ago. Our large selection of Caterpillar manuals has in-depth information suitable for any job, big or small. Available for: 2000-2004 CAT C12 Engines Warranty: 1 Year Unlimited Mile Warranty Get better fuel efficiency and drivability from your Caterpillar C12. The correct oil pressure for this engine is high side 47.7 psi and the low side is 13.6 psi. C15 ACERT MXS Cat boost pressure, no load. The ECM calculates the engine exhaust gas temperature, by using the readings of the Inlet Manifold Temperature Sensor and the Atmospheric Pressure Sensor (along with a rpm factor). Here is something else to think about – the older 425-B Cat engine, which was mechanical, had aluminum pistons, did not smoke on cold start-ups, achieved good fuel mileage, made great power, started easily, had long engine life, and only had one wire going to the engine to run it, produced 19.3 horsepower per pound of turbo boost! Your Cat dealer can program some of the values in the monitoring system to different trip points if you´d like. Vern  I posted a few comments about a month ago re the C13 -525, A stock c13-525 in the 06 Thunder I'm sure the Marquis is similar is 525 hp and 1600 ftlbs of torque in reality your engine to the rear wheel on a dyno is 400hp and 1200 ftlbs of torque, now I have done two steps to increase my hp and especially the torque the first step was the exhaust and air filter changed the stock exhaust from 4" to 5" and air filter to a K&N Diesel air filter paper style which you can wash and my HP rating went to 450hp and the torque was 1390 a nice gain but still not enough power as my Coach and yours is heavy so I did step # 2 and did an ecm tune on the engine computer and you would not believe the results. ATD exhaust gas temperature 2 voltage below normal: 332: 3: aftertreatment fuel pressure control: aftertreatment fuel pressure sensor voltage above normal: 332: 4: aftertreatment fuel pressure control: aftertreatment fuel pressure sensor voltage below normal: 332: 11: aftertreatment fuel pressure control: aftertreatment fuel presuure high: 333: 5 Exhaust Gas Temperature Derate often occurs if these Cat bridge engines are put under prolong heavy loads and/or climbing steep grades. http://prevostcommunity.com/PDF/Motor%20Home%20Fuel%20economy.pdf, Quote from: Dave Atherton on April 16, 2015, 04:57:55 AM. This video discusses the design, history, and problems with the Cat C12 and C10 engines. The C12.9 marine propulsion engine is ideal for high performance marine applications including yachts, fishing vessels, military vessels, governmental vessels and various other high performance marine applications. I try to do mine yearly or at 10K miles whichever comes first. Plus the heat exchanger, fuel cooler, trans cooler cleaning. The Big Boss Turbo design has been created to withstand the toughest heat cycle conditions adding reliability with performance and efficiency. 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. Jan 1, 2008 Eau Claire, WI 0. CAT's data indicates for a C12, actual permissible mileage between oil changes is based on a number of factors including fuel consumption, type of service duty, vehicle weight, oil sump size and idle time%. As the boost pressure increases against the diaphragm in canister (2), the wastegate valve is opened and the rpm of the turbocharger is limited by bypassing a portion of the exhaust gases past the turbine wheel of the turbocharger. Than has power if a high boost pressure is around 85-90 psi this engine is to... 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