Engine dying/near dying when turned on and put in gear

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Apr 2, 2009 | 10:44 AM

#11

Fubba

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Quote:

Originally Posted by TMS Bill

Since you say it only happens when warmed up ... I'm thinking "closed loop" operation. The PCM operates in closed loop (uses data from the front O2 sensor) after the engine has reached operating temperature. It does this at idle and during cruise. The front O2 sensor may be done (or just really filthy) ... pull it and clean it up with the carbon remover of you choice ... or change it out entirely to be sure.

It happens at start-up (when warm), when put in gear, and if in first or reverse, when you accelerate and let off the gas. Does that still sound like an O2 sensor?

Apr 2, 2009 | 10:54 AM

#12

steve05ram360

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Quote:

Originally Posted by TMS Bill

if your going to clean it, use CRC Electronic component cleaner... found at any auto parts store. Spray the holes in the tip real good, let it dry, then re-install. cleaning the outside will do no good and it does not matter what it looks like. the important part is inside and may need a couple of cleanings if it is really gunked up.

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