[V8] Idle speed too high
ed.kellock at msn.com
Mon Jan 19 19:29:47 PST 2009
Patient is my 91 5spd. Idle speed is consistently a little too high, like
1100. Here's what I've done....
-opened up and cleaned throttle butterflies directly
-lubricated throttle rod/pivot assembly (it was and is smooth and returns
to stop solidly)
-went through everything again checking for vacuum leaks
-checked cruise control for adjustment etc., no interference
Initially I could lower it some by pushing down on the small lever at the
front and I found that I had the TPS adjusted so that it was causing the
throttle to hang open a bit. I loosed the TPS, pushed down on the level,
backed the TPS off a little tiny bit more and snugged it down. I
confirmed it still returns to closed throttle position (click).
The last thing I did was unplug the ISV and start the engine. The idle
seemed right for a moment but then slowly climbed up to 1100. It seems
like it's ECU or something.
When I turn the engine off, there's a clack in the passenger side fender
well. I know there's some emmissions shite in there, a reservoir and a
valve of some kind, but I don't know what it should/shouldn't do. I am
fairly sure I've never heard a clack from that area ever on any of my V8s.
Maybe I just never noticed.
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