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L6-5.9L Turbo Diesel

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Question
Brake lights stay on all the time.
Hi there. The most likely cause for the brake lights staying on is, a faulty brake light switch. Another possibility, would be a short to power past the brake light switch and disconnecting the brake light switch would isolate whether,...
Question
Engine only runs at 650 or 1300 rpm's, and nothing in between 650 and 1300 or above 1300 rpm's.
Hi there. First check the air filter on the engine. A dirty air filter will starve a diesel engine and prevent it from running correctly. Then check the fuel / water separator and see if there is a drain valve....
Question
My truck has a violent shake, rapid onset, massive white smoke, increases shaking with turbo charger pressure increase, and has an error code of p0303.
Hi there. If you are having a misfire on cylinder number 3 and the injectors are new with the fuel lines cleaned out, then the exhaust valve is burned on cylinder number 3 and needs replaced. This is why there...
Question
Passenger side battery boiling over
This may suggest you have a voltage regulator that is allowing the alternator to overcharge the battery causing it to boil as you describe. The voltage regulator is a unit that regulates the charging of the battery by the alternator....
Question
Leaking oil out of the front..not from the blow by hose
Hello there, many common faults will cause your 2001 Dodge Ram 2500 to leak puddles of oil while the engine is running. The most common causes are the oil pan gasket, front crankshaft seal, crankcase breather or valve cover gaskets....
Question
Transmission valve body
The 48RE valve body is designed to flow more transmission fluid and build up pressure quicker than the 47RE. This is quite likely the reason you are experiencing shifting problems. As you know, automatic transmissions use pressurized hydraulic fluid to...
Question
My truck was running perfectly yesterday, but this morning it won't start.
When you attempted to start the vehicle this morning, did the starter attempt to crank the engine? If not, the issue is likely the starter. Although they can display signs of wearing out, they can also stop working suddenly. If...
Question
Accelerator Pedal Position Sensor p0222 Diagnosis
Hello. If the switch has already been replaced then the next thing I would check is APP sensor's harness and wiring. If there is any issue with the harness or wiring then it may be possible that it is throwing...
Question
Transmission won't shift into lockup.
Hi there. Check the TCC (Torque Converter Clutch) fuse and see if its blown. If the fuse is working fine, then either the torque converter clutch is burned or the seal on the input shaft to the transmission has split....
Question
A/C and heat work intermittently
Hello - I would first check for fan motor voltage coming out of the HVAC control switch. A bad contact for the fan could act as you describe. If you are consistently getting 12 volts out of the switch TO...
Question
Bolt on bottom of transfer case. 2001 Dodge Ram 2500
Hello - I would consult a service manual on your transfer case problem if possible, but basic guidance would be: the "bullet" would go back in first, followed by the spring, followed by the '"bolt". Examine the "bullet" - one...
Question
Acceleration and gas pedal problems.
This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in relation to your foot position on...
Question
When replacing the oil cooler do i need to put O rings on it as well? 2002 Dodge 3500 CummingsDiesel
Hi - yes, absolutely change the o-rings. They get brittle with heat and age, lose their resilience, and you have oil leaks. If you would like assistance with this task, I would recommend having the oil cooler replaced by a...
Question
Won't pass smog
Hi there. It's very likely that you have a stored error code in your ECU that is disrupting the system to reset itself, which can only be removed by a professional mechanic by having them complete a check engine light...
Question
I got a code P0191 for the fuel rail pressure and a code P0237 for turbocharger boost.
Hi there. When the battery was arched, the power surge had went through the vehicle and caused some circuits to fail. If right after the power surge happened and now you have a code for the fuel pressure and the...
Question
Which diesel is most superior? 7.3 5.9 6.6
The 5.9L diesel is a straight six engine. The 6.6L diesel and the 7.3L diesel are both V8 engines. If find that there are more maintenance when it comes to the V-configured engines to the straight six engines. I have...
Question
Oil is green in color.
Hi there. Diesel fuel has a green tint to it. It is possible that the fuel has gotten into the oil, but most likely the diesel will just thin out the oil. If the oil if light bright green in...
Question
Clinking sound in frount axel
Based on what you have described, I would agree that a problem with the axle is the source of the clicking noise. However, it could be a wheel bearing problem that is causing this noise. In order to know for...
Question
What is causing my truck to make a grinding noise when I shift it into drive or when I come to a stop
Hi there. If the gears are not engaging and there is a grinding noise, it is commonly due to a front pump failure or main shaft damage inside the transmission. I recommend having a certified technician, such as one from...
Question
Truck will not get over 2000k rpms when in gear but when in neutral or park it will rev wide open.
Hi there. It is quite possible that your ECM is restricting RPM or the source of your problem; especially if you replaced it and it wasn't reprogrammed or updated by a dealership. That's really the only thing I can think...

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