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Discussion Starter · #1 ·
I've been having a bit of a problem for the past year or so. My '92 1.9-L runs rough when I first start the engine, especially when cold and even some times when recently used/warm. The rough idle clears itself in about 20-30 seconds and runs just fine.

I've done the usual tune-up things in the recent past and cleaned the MAP sensor too (clean). Does anyone have suggestions as to the cause and what to check out? Thanx in advance !
 

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Discussion Starter · #2 ·
Think I Got It

I haven't changed the fuel filter in 125,000 + miles and thought this may be the culprit. I swapped it out and the rough idle on start-up seems to have been eliminated. Will post update after some history.
 

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check the resistance of the IACV
 
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