I have a 95 avenger 16v 2.0 dohc that got driven home with no oil pressure. I cleaned the oil pick up tube and the sledge in the pan . now I have good pressure... there is no knocking or pinging whatsoever and the car runs great over 100 RPM....However I now have a surge at idle...." sounds like a dog panting..[ha ha ha ha] and so on". I took out the EGR and pluged the holes with rubber plugs and surge is still there... checked the fuel pressure and it is around 45 psi.. changes when I take vacuum hose off.. replaced the MAP sensor.. no fix... replaced the O2 sensor.. no fix... the IAC looks like its working plus, I unpluged all sensors Cam, Crank, IAC,TPS etc. one at a time and everyone changes the way the engine runs.. (stalls it) so I am assuming they are working... I checked all the injectors for proper voltage, they are around 12.7v took wires of 1 at a time and killed the engine.. I took plug wires off 1 at a time and the same result...I replaced all the spark plugs and 2 wires were bad, replaced them... I also took off the neg. wire on the battery and touched it to the pos terminal to re set things...checked all grounds... still surging... now one hint I can give... there seems to be no rpm between 1000 and about 2800 when I push the gas pedal as slowly as possible it jumps from 1k to 2800... I cant seem to say... hold it at 1500 rpm or any where else... I took the car to Chrysler for help... they got a code of "timing belt slipped 1 tooth retarded 19%".. when I set cyl. 1 to TDC the timing marks on the cam pullies are exactly even... I can take carb. cleaner and spray it into the intake slowly and the surge seems to go away.... what am I missing or any ideas????

 

tps voltage steady ???

 

TPS..do I check it with out the plug or how??

 

https://dodgeforum.com/m_981331/tm.htm the tps mod I posted says how to check it ...

 

I get a reading of .65 to start .... when I give it gas it only goes to .72 @3000 rpm it goes to 1.9 if I stomp on the gas then back down to .72... whats this mean??? jz

 

is it steady at idle ??? or does it jump up/down???

 

steady...

 

are you sure the IAC is working properly and not gummed up ???

 

I've had it apart three times, and it seems working ok..... after you start it cold, this car seems to run ok while the computer has control, but about 14 seconds into running when the car wants to run on it's own the surge comes in.....Z