92 Expo Check engine light after timing belt replacement

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terrysduncan@hotmail.com - 24 Aug 2006 09:32 GMT

I have a 92 Expo with the check engine light on. I had the timing belt
replaced at around 120K and the light came on while driving home. The
mechanic pulled the code and it was 43 - indicating a problem with the
EGR valve. My car does not have an EGR valve (no CA emissions). About
10K before the timing belt replacement I had to have the module
(computer) replaced. I suppose it is possible that the replacement
module came from a California car. But there was no light for that 10K
miles between the module replacement and the timing belt replacement.
Any pointers would be greatly appreciated. I have to take this in for
environmental quality testing this month and they will fail it if the
light is on.

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Bob Shuman - 24 Aug 2006 19:53 GMT

You sure the timing marks were all aligned when the new belt was installed?

>I have a 92 Expo with the check engine light on. I had the timing belt
> replaced at around 120K and the light came on while driving home. The
[quoted text clipped - 7 lines]
> environmental quality testing this month and they will fail it if the
> light is on.

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Stewart DIBBS - 25 Aug 2006 00:25 GMT

>I have a 92 Expo with the check engine light on. I had the timing belt
> replaced at around 120K and the light came on while driving home. The
> mechanic pulled the code and it was 43 - indicating a problem with the
> EGR valve.

You don't say if this the 4G93 1.8L 16v or the 4G64 2.3L 8v engine.

If its the 4G64, I'll bet the engine does not feel as powerful or smooth as
it used to, and there's a strong engine rattle at 2200-2500 rpm. This is
THE symptom of the oil pump 90 or 180 degrees out of phase with the cam
belt. Do not let the mechanic snowjob you with "it's just an exhaust
resonance": its not. He did the job wrong and its his responsibility to do
it right. Shouldn't take more than an hour at most.

I don't have experience with the 4G93, but I willing to bet the belt
alignment is off.

Signature

Stewart DIBBS
www.pixcl.com/lancerproject.htm

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terrysduncan@hotmail.com - 25 Aug 2006 01:53 GMT

Thank you both for the responses. Those are the symptoms exactly and it
is the 2.3L engine. The mechanic is a friend - so I don't think its a
snow job - I haven't pushed it since I believe its getting better gas
mileage now. But now that its time for emissions testing, I need to
get it taken care of. I plan to drive it till it drops but that may not
be too far distant considering its killed two computer modules in the
last three years, burns a good bit of oil and can be difficult to
shift.

-Terry

> You don't say if this the 4G93 1.8L 16v or the 4G64 2.3L 8v engine.
>
[quoted text clipped - 7 lines]
> I don't have experience with the 4G93, but I willing to bet the belt
> alignment is off.

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