archerman0531
Registered User
So, ever since I bought this car(1990 cougar xr7) it has always idled high(1500rpm for about 10-12 seconds, and that varies) and then goes down to around 1000-1100 rpm. When driving and push the clutch in it also revs higher to the 1500rpm range. How do I adjust the idle? The throttle stop screw was adjusted to were it wouldn't hit the stop. I adjusted it to where it actually rests on the stop. I don't see anything else for an idle adjustment. After its up to opp temp. It likes to elevate a couple 100 rpm and die back down and back up for a while almost like surging but not as exagerated, and finally settles down to 1000-1100. You can watch the vacuum/boost gauge waiver from 21-22 inch/lbs at 1000-1100rpm to 16-18inch/lbs as it increases in rpm.
Any help would be greatly appreciated.
I'm thinking possibly MAF, TPS, or IAC.
Any help would be greatly appreciated.
I'm thinking possibly MAF, TPS, or IAC.