my car started feeling weird this past week, where the car would idle fine without the AC on, but with the AC, the car idles pretty rough. any ideas?

i've tried cleaning the throttle body, seafoaming (lots of smoke), cleaned my maf, air filter, seafoam in the gas and crank, and reset the ecu. and yes, new ngk iridium ix plugs were put in last month.

thanks,
GSquicksilver

 

Are you sure it's not the engine mount?

 

it idles fine when the AC is off. this all happened about a week or so ago all of a sudden. i sure hope it's not the mounts.

 

This happens to me in my 02' Mustang. It idles very low (200rpm) with the A/C on.

 

Are you on original engine mounts? If so, that might be it. My car use to idle fine until I turned on the AC. Had the mounts replaced and the car have never felt newer.


But it could also be your AC compressor. Do you hear any odd noises?

 

May be your A/C signal circuit.

 

i get this too, its loud and rough at idle with AC on, but without AC its fine ....

 

Check if your compressor is fine. I honestly don't know what it could be, but check to see if your AC needs to be recharged.

 

GSteg,

yea, i'm still on the original mounts. my ac compressor is fine and does not have any odd noises.

if you don't mind me asking, where did you get your mounts replaced and how much does the job cost? thanks.

 

i'm getting mine replaced , it'll probally run from 600 -1000 dollars for all mounts including tranny. $1000 wasn't even a dealer quote.

 

dusouth, avoid going to the place where you got quoted. Thats a large amount of money to be spent on mounts!!

Our cars only have 3 mounts: (2) engine mounts and (1) transmission mount. The engine mounts are $100 each and the transmission mount is $70. Just get the shop to do the engine mount. You can do the transmission mount at home in about 15 minutes. It's very easy.
The engine mounts should only take about 2-3 hours to install.

GSquicksilver, where in CA are you? I can refer you to a shop that can do your mounts for a good price.

 

GSteg,

i'm in the oc

 

I'm in the OC too. If you have time, check out this place:

Vinam Auto Repair
15052 Jackson St.
Midway City, CA 92655

Take a look at this thread:
https://www.clublexus.com/forums/sho...ighlight=vinam

 

wait, is the owner name hiep? he's vietnamese right?

 

Owner name is Tho. I dont know what else he goes by