Engine/Transmission (1998.5 - 2002) low boost code, any ideas please

[BKilbury]

I've in the last two days picked up a 237 code... . low boost. The truck runs the same as always. Could this be the map sensor, boost fooler or the waste gate? Anybody else out there experiance this ? I've had it erased once but came back a day later and the check engine light will disappear on its own ocasionally.



tks, Bryan



ps... all clamps are tight and no visable holes etc. to after cooler hoses

 

[Cryppie]

If you have a boost gauge that reads normal, I would suspect a bad MAP. If you're showing no boost on your gauge, then look for wastegate stuck open, blown intake boot clamp or other leaks. Since it's running as usual, I would suspect the MAP first, a real low boost condition will drop your power significantly.

 

[Bob4x4]

Put a scanner on it and read the map sensor,quick and easy... .



Bob