Rough idle with AC on - 2000 Civic

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#2797487 - 07/07/08 08:00 AM Rough idle with AC on - 2000 Civic
SWEETGT SWEETGT Post Master Sr Registered: 10/13/04 Posts: 5465 Loc: Cincinnati, OH	My girlfriend has a 2000 Civic. I added some refrigerant to her AC on Saturday. I noticed that when the AC is on, the RPMs drop real low at idle, like almost to the point of stalling where the car feels pretty rough. What should I be checking for? Is there some kind of solenoid, etc that bumps up RPMs when the engine is under AC load, that could have gone bad?
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#2798861 - 07/07/08 02:35 PM Re: Rough idle with AC on - 2000 Civic [Re: SWEETGT]
Import Tuner Import Tuner Gold Member Post Master Sr Registered: 03/04/00 Posts: 8185 Loc: Tacoma, Wash..	The ECU adjusts the IACV when it detects a load (headlights/rear defogger/A/C etc.)... It sounds like you may have too much freon in the system... _________________________ Donny Import Specialty Automotive
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#2799209 - 07/07/08 03:59 PM Re: Rough idle with AC on - 2000 Civic [Re: Import Tuner]
SWEETGT SWEETGT Post Master Sr Registered: 10/13/04 Posts: 5465 Loc: Cincinnati, OH	really?..makes sense since i added to it..but it was reading in the full range on the gauge.but maybe I have some extra in there..not sure how many lbs the civic is supposed to have.
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#2799246 - 07/07/08 04:10 PM Re: Rough idle with AC on - 2000 Civic [Re: SWEETGT]
Import Tuner Import Tuner Gold Member Post Master Sr Registered: 03/04/00 Posts: 8185 Loc: Tacoma, Wash..	IF it were completely empty, it'd only hold 21.1 - 22.9oz (600-650g) (a little over a pound and a quarter)... _________________________ Donny Import Specialty Automotive
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#2799379 - 07/07/08 05:06 PM Re: Rough idle with AC on - 2000 Civic [Re: Import Tuner]
SWEETGT SWEETGT Post Master Sr Registered: 10/13/04 Posts: 5465 Loc: Cincinnati, OH	Hmm..the gauge was reading like 40-45 psi..which is in the blue/full region.. Think I should try bleeding some off? Not sure how much the system has in it.
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#2799553 - 07/07/08 06:18 PM Re: Rough idle with AC on - 2000 Civic [Re: SWEETGT]
Import Tuner Import Tuner Gold Member Post Master Sr Registered: 03/04/00 Posts: 8185 Loc: Tacoma, Wash..	I'd try bleeding some off!... It sounds like you're getting liquid (instead of gas) in the compressor and it's trying to lock up... _________________________ Donny Import Specialty Automotive
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#2800105 - 07/07/08 09:11 PM Re: Rough idle with AC on - 2000 Civic [Re: Import Tuner]
SWEETGT SWEETGT Post Master Sr Registered: 10/13/04 Posts: 5465 Loc: Cincinnati, OH	i bled some off tonight (oh noes EPA). Seemed to be a bit better..will wait from report on GF unit when she drives to and from work tomorrow. Thanks man!
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#2800779 - 07/08/08 01:28 AM Re: Rough idle with AC on - 2000 Civic [Re: SWEETGT]
Import Tuner Import Tuner Gold Member Post Master Sr Registered: 03/04/00 Posts: 8185 Loc: Tacoma, Wash..	Fuck man, you broke the sky (/EPA)... $\:\)$ It's cool, you probably just had a slight overcharge!... _________________________ Donny Import Specialty Automotive
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