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Originally Posted by deliriousga
I'm at my wits' end with trying to figure out the throttle problem so I'm wondering if the DME itself is messing up. Is there a way for me to test it or do I have to give up and go to a dealer?
I think I've done everything else I can to try and remedy the problem. The E-Gas throttle will not go over 2K rpm and gives me the code P1502. If I clear the code, the car runs beautifully until you turn off the engine and restart it. That's the case whether the engine is cold, warm or hot. I have checked for vacuum leaks and replaced the MAF, O2 sensors, fuel pump relay and throttle body. I don't know what else could cause this problem and go away when the code is cleared unless it's a problem with the DME.
TIA!  |
Does your OBDII reader have a software that lets you monitor things in real time? I don't have a good idea what may be wrong in your case, but you might be able to confirm that for example your e-gas controlled throttle opens up wide enough to go above 2000rpm. Also, you could monitor your O2 sensors and the MAF air flow rate right when you try to go above 2000rpm - maybe that would give you a hint at what's wrong.
Hope you find it!
Gary
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