Why is my 89 z71 pickup running a low idle?

5

Asked by Apr 01, 2016 at 10:59 AM about the Chevrolet C/K 1500

Question type: General

i just put a new 350 crate motor in it we broke it in already changed the oil. Put
a new thermostat in it it just started it coming to a complete stop at a stop sign.
Went to Oreilly's last night it has no codes and the distributer cap is loose
could my truck be out of time. Or is it something else

2 Answers

75,515

The timing issue needs to be checked out, Also, it may be the Idle Air Control Valve. This port should be cleaned out as this a major source of vacuum before installing a new one, and or could be the throttle positioning sensor could be bad.

Best Answer Mark helpful
5

it turned out it was the egr valve

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