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Re: '89 350 tbi 5 speed stalling and surging idle
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What fuel pressure should I be looking for?
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The TBI fuel pressure specification for small block Chevy’s is 9 – 13 PSI with the truck running.
TBI engines should not “diesel” (run-on) when shut off because there should be no fuel. Make sure the injectors do not drip fuel when it is shut off.
When you replace, remove and cleaned an IAC, or unplugged the IAC with the key on, the ECM may need to relearn the IAC position. This will not happen without driving the truck and meeting specific conditions or taking other steps the cause it to relearn the idle.
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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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