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500 efi erratic idle
The motor fluctuates from about 700-800 rpm for about 20 seconds then drops down to 500rpm for a second. It is also slow to come back to idle if you rev it.
What could it be? Iac motor? Thanks in advance! |
Fixx
IAC or a vacume leak,
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IAC would be my guess.
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Originally Posted by soonenough
(Post 3423763)
The motor fluctuates from about 700-800 rpm for about 20 seconds then drops down to 500rpm for a second. It is also slow to come back to idle if you rev it.
What could it be? Iac motor? Thanks in advance! You had the intakes off right ? Are all 3 vac lines connected back up at the rear of the intake?.. pcv hose too ?, or check the plenum o rings to make shure they're still in the proper position/groove in the lower intake runners. |
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