- Location
- Roanoke VA
Well, I'm still fighting a rough idle on my newly rebuilt 90'. All of the ignition system is new, the O2 is new, the intake and TB is very clean, the TPS has been properly adjusted and is working good, there are no vacuum leaks(all new vacuum lines), the intake is tight, the fuel press. reg is working, the injectors are new, the EGR is blocked off and plugged, all the other various sensors have been tested and are working properly. It drives fine otherwise, which tells me its in the idle circuit.
The IAC is the only thing I can't test, but I can unplug the IAC and the idle does not change at all, cold engine, hot engine, it doesn't mater. Is this a sign that the IAC is not functioning. The rough idle seems to be from a rich running engine since I can smell gas through the exhaust. I've ordered a replacement from Holley(part # 543-105), but I just want to see if anyone else has fixed this problem with a IAC replacement?
Keep in mind that most of the work already done is due to the restoration of this XJ and not a direct result of my idle problem.
I'm grasping at anything at this point!
The IAC is the only thing I can't test, but I can unplug the IAC and the idle does not change at all, cold engine, hot engine, it doesn't mater. Is this a sign that the IAC is not functioning. The rough idle seems to be from a rich running engine since I can smell gas through the exhaust. I've ordered a replacement from Holley(part # 543-105), but I just want to see if anyone else has fixed this problem with a IAC replacement?
Keep in mind that most of the work already done is due to the restoration of this XJ and not a direct result of my idle problem.
I'm grasping at anything at this point!