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Help! Odd hestitation problem

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Old 09-06-2003, 02:21 PM
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Help! Odd hestitation problem

Hey guys,

On my way back from a trip to Ottawa, I noticed on the highway that my car would lose power gain power lose it, come back...

Yet I was holding the gas very steady!

I cleaned my TB and my IACV (IACV not cleaned toroughly though)
KS changed... what could be the problem?

Does the IACV affect my power at those speeds? I was at ~3.5k in 5th.

could it be a bad coil pack?
If so, what's the proper resistance of a coil pack?

Thanks guys.
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Old 09-06-2003, 07:51 PM
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bump hehe
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Old 09-06-2003, 08:19 PM
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IACV only works at idle (hence the name). Does the idle "surge"? Surging can be a vacuum leak. If you had the TB/IACV off to clean, check the gaskets. Check for other vacuum leaks (hoses, etc...)

Dave
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Old 09-06-2003, 10:27 PM
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Originally Posted by Dave Holmes
IACV only works at idle (hence the name). Does the idle "surge"? Surging can be a vacuum leak. If you had the TB/IACV off to clean, check the gaskets. Check for other vacuum leaks (hoses, etc...)

Dave
Were you using premium fuel?
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Old 09-06-2003, 11:45 PM
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Originally Posted by onegoode
Were you using premium fuel?
This would deffinitelly do it. A friend of mine put regular gas in my car without telling me they were going too. My car ran like crap for that whole tank.
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Old 09-07-2003, 01:44 AM
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I heard though that the IACV will function upto about 4k rpms... i think i read that here somewhere... That's why i fugred in 5th, running at around 3.5k the trottle is open, but theres also air coming in through the IACV. dunno... :-/

oh, and i checked the resistenc of 2 coil packs today... each had different resistence :-/ that can't be good
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Old 09-07-2003, 04:46 AM
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You could check your ECU for codes.
The resistance on the coil packs may not match up perfectly, but they should all be very close to each other. If I remember right, they should be 32 kohms (maybe a different scale, but 32 something). But this is only if I'm remembering right.
Does your car idle rough? That would be a good sign of a vacuum leak.
On my '97, the IACV ticks at idle. This ticking goes away as soon as you rev it a little.
I would definitely check the ECU for codes, and go from there.

Dave
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Old 09-07-2003, 07:10 AM
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Change your fuel filter and run a bottle of Techron through your next tank of gas. See what happens after that.
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