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Re: High idle on each start
With a IAC count of 38 when at 1000 RPM you should be ok turning in the stop screw a little.
If you have a BOSCH oxygen sensor the first thing I would do is replace it. I would use a junk yard OEM oxygen sensor over a BOSCH after all the horror stories I have read.
You can hold the truck in open loop by unplugging the oxygen sensor and see how well it runs warmed up.
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For those of you that are wondering why you are not getting replies to your thread:
Did you give the model, year, engine, fuel system type, and transmission information?
If it is modified from what came stock from the factory, let us know that too.
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