15A
World's Oldest Brewery
- Joined
- May 7, 2004
- Location
- OH-MI....just like it sounds
Helped a friend do a head gasket on an 89 with 210k. Noticed his TPS wasn't clicking so replaced it with one that did. Also replaced his CTS while it was all apart.
Start it up and it runs fine except the idle surges from 1200 to 1700...over and over. Only time I ever had that issue was a reman ECU. Swapped it and it purred. Tried that and no change. TPS is set and the IAC is functioning. My last thought was that 'new' Bosch CTS - new and Bosch mean very little these days. So before I pull the intake off and swap it out with his old one, I unplugged the AMM. Idle went solid (no surging) but at 1600 rpm. Never had an issue with the idle and an AMM.
One more thing.....it throws no codes (which also made me suspect the AMM).
Does this bring back any acid flashbacks of similar-already-figured-out issues anyone here had?
TIA
Start it up and it runs fine except the idle surges from 1200 to 1700...over and over. Only time I ever had that issue was a reman ECU. Swapped it and it purred. Tried that and no change. TPS is set and the IAC is functioning. My last thought was that 'new' Bosch CTS - new and Bosch mean very little these days. So before I pull the intake off and swap it out with his old one, I unplugged the AMM. Idle went solid (no surging) but at 1600 rpm. Never had an issue with the idle and an AMM.
One more thing.....it throws no codes (which also made me suspect the AMM).
Does this bring back any acid flashbacks of similar-already-figured-out issues anyone here had?
TIA