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TBI wandering idle

Cricket

3/4 ton status
Joined
Nov 29, 2004
Posts
8,217
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Location
Colorado
Just an FYI.

I had a wandering idle when cold in the morning, low-high-low-high for about 3 minutes. I replaced the TPS and that fixed it.
 
After changing the cam, and rebuilding the heads with bigger valves my trucks idle was up and down. A quick look using WINALDL showed a lean condition at idle. Upped the fuel pressure to 17.8 psi, and no more problem.
 
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