Stuttering Warm Startup for 10 secs
#1
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Stuttering Warm Startup for 10 secs
This never happens during cold start, but when warm start up, there is about 50% chance that the engine idles at a very low rpm (maybe like 100-200 rpm) and when I give it half throttle it slowly goes up, and after about 10 seconds of revving it up, the idle is fine.
Any idea what my problem is?
I already have perfect 14.7 AFR idle when this problem does not occur or after several seconds. TUned with uberdata.
Any idea what my problem is?
I already have perfect 14.7 AFR idle when this problem does not occur or after several seconds. TUned with uberdata.
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Re: Stuttering Warm Startup for 10 secs (elpiar)
sometimes uberdata wont control the obd2 iacv, if you wanted to take the time to swap over to the 4-wire ( ithink, might be 2) iacv then that problem will go away
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Re: Stuttering Warm Startup for 10 secs (wantboost)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost »</TD></TR><TR><TD CLASS="quote">sometimes uberdata wont control the obd2 iacv, if you wanted to take the time to swap over to the 4-wire ( ithink, might be 2) iacv then that problem will go away</TD></TR></TABLE>
Can you tell me more about this? Any thread about it?
Can you tell me more about this? Any thread about it?
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sounds like a eacv(electronic air control valve) at the back of the intake manifold is not working properly, i had the same problem when i ran an automatic intake manifold and just let the eacv hang with the coolant lines connected and wire plugged in. Maybe try a different eacv or just clean it with wd40?
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#8
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Re: (turbo_CRX)
its somewher on the ud forums, i think its stickied at the top. sometimes with certain cars it just wont work, lol. i wish i could explain in better but im dead on my feet right now, tomorrow i'll look through the ud forums
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Re: (turbo_CRX)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbo_CRX »</TD></TR><TR><TD CLASS="quote">sounds like a eacv(electronic air control valve) at the back of the intake manifold is not working properly, i had the same problem when i ran an automatic intake manifold and just let the eacv hang with the coolant lines connected and wire plugged in. Maybe try a different eacv or just clean it with wd40?</TD></TR></TABLE>
I thought I only have IACV. Can someone give me a diagram or photo to point out which one is it on my gsr?
I thought I only have IACV. Can someone give me a diagram or photo to point out which one is it on my gsr?
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Honda CRX / EF Civic (1988 - 1991)
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07-03-2004 12:36 AM