Rough idle with A/C on?
07-07-2012, 02:42 PM
#1
Member
Thread Starter
Join Date: 11-26-11
Location: Colorado
Posts: 224
Likes: 0
Received 0 Likes
on
0 Posts
Rough idle with A/C on?
This is wierd, car idles fine until i turn the A/C on. It goes from 1300k down to like 400k up and down until i take off or turn off the A/C. Why? Basic S3 mods, still need to dump ZZP can tune for custom tune but what the hell is causing this?
07-07-2012, 03:03 PM
#3
Platinum Member
Platinum Member
07-07-2012, 03:06 PM
#4
Senior Member
iTrader: (4)
Join Date: 08-22-11
Location: YAMOMS
Posts: 6,904
Likes: 0
Received 0 Likes
on
0 Posts
His RPMs probably shoot up to that much when he has the A/C on then surges from there down to 400 repeating.
Mine does this sometimes, but if its constantly doing it, try cleaning the throttle body.
Mine does this sometimes, but if its constantly doing it, try cleaning the throttle body.
07-07-2012, 07:32 PM
#5
Member
Thread Starter
Join Date: 11-26-11
Location: Colorado
Posts: 224
Likes: 0
Received 0 Likes
on
0 Posts
Gella is right, it shoots up to 1300 then down to 400 and up and down. My normal idle is around 950 or so. I have cleaned my tb when i did the s3 mods about 4k miles ago. And also it does this similar up/down idle at warm up, it does this until normal opperating temp then smoothes out. Its not as drastic as the ac but its annoying, around 600 to 1200 rpm
07-08-2012, 01:38 AM
#7
Member
Thread Starter
Join Date: 11-26-11
Location: Colorado
Posts: 224
Likes: 0
Received 0 Likes
on
0 Posts
07-08-2012, 11:48 AM
#9
And also it does this similar up/down idle at warm up, it does this until normal opperating temp then smoothes out. Its not as drastic as the ac but its annoying, around 600 to 1200 rpm
07-08-2012, 03:35 PM
#10
Member
Thread Starter
Join Date: 11-26-11
Location: Colorado
Posts: 224
Likes: 0
Received 0 Likes
on
0 Posts
Thread
Thread Starter
Forum
Replies
Last Post