High idle.
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Senior User
Joined: Jun 2011
Posts: 382
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From: Milford, CT
High idle.
So, I finally chased down most of my issues since doing the cam & headers. Tonight I fixed my code 172 (new fuel filter did it), and the idle went up even more (from ~1300 to ~1600). I plan on checking the TPS output again tomorrow, but the computer supposedly zeros at key-on. Tomorrow I will also pull the plug on the IAC and check the adjustment screw. Anyone have any other ideas to run down?
Thanks in advance,
-Mike
Thanks in advance,
-Mike
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
What is the engine RPM when you have the IAC plug disconnected? Should be around 675 - 725. Either way, it should drop considerably when you disconnect it. What's your timing set at? Remember elevated timing will also increase idle RPM.
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Senior User
Joined: Jun 2011
Posts: 382
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From: Milford, CT
If the Idle stayed high, either:
1) the IAC is stuck
2) throttle blades are improperly adjusted
3) you have a vacuum leak
The engine *should* die with the IAC unplugged if everything is set up properly.
My issue is (still) a vacuum leak.
-Mike
1) the IAC is stuck
2) throttle blades are improperly adjusted
3) you have a vacuum leak
The engine *should* die with the IAC unplugged if everything is set up properly.
My issue is (still) a vacuum leak.
-Mike
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