1. The ECU is firing steady short pulses, so it's clean of codes.

2. Replaced the O2 sensor about a year ago. New OEM assy.

3. ECT sensor resistances are good.

4&5. I'll hit up the junkyards for those and give them a shot.

5(#2). Yep, I put in the original ECU a week or so ago when my spare that I was running shot it's caps. The original isn't actually the original, but one that was replaced by a shop about 7 years ago. I don't know if the shop put in one that had the caps replaced or not, but I recall they charged me about $400, so I hope it was rebuilt with good caps. I'm sending the fried spare to AvPro for repair and I'll try that out when it returns to see if there's any change with the idling.

Thanks for your help, Frank! <img src="/forums/images/graemlins/cheers.gif" alt="" />

Last edited by DirtDriver; 08/25/08 04:14 AM.
1990 Monty LS 3.0 A/T LWB. KYB front shocks, OME rears and coils. 33x10.5 BFG Muds. 5.29, 2.85, RD110, RD46. 2 bouncys. Aisins. Monte Disco swaybar disconnects. GenII t-arms, idler arm, UCA's, V45W front brakes. 2in BL.