car holds rpm after tune
03-07-2009, 10:31 AM
#1
Staging Lane
Thread Starter
iTrader: (12)
Join Date: Jul 2008
Posts: 72
Likes: 0
Received 0 Likes
on
0 Posts
car holds rpm after tune just got done doing an auto swap and getting it tuned but now the car likes to hold 2000 rpm when going down the road even if i put it in nuetral while coasting it stays at 2000 until i stop.so the car will gain speed on its on, not sure what it would be.
03-11-2009, 04:36 PM
#5
12 Second Club
iTrader: (5)
Join Date: May 2008
Location: Georgetown, Texas
Posts: 322
Likes: 0
Received 0 Likes
on
0 Posts
Mine does the same, I didn't do a tranny swap or anything but on my M6 after the tune, if I hold in the clutch it will stay around 1500 until I come to a complete stop. Something with the IAC tables I was told. I just never got a retune to take care of it. I will when I get the fuel pump, and injectors.
D
D
Trending Topics
03-12-2009, 12:14 AM
#8
Launching!
Join Date: Feb 2004
Posts: 260
Likes: 0
Received 0 Likes
on
0 Posts
The throttle follower tables control the rate of closing of the TP.
The cracker tables follow the opening.
03-12-2009, 11:49 AM
#9
TECH Regular
iTrader: (2)
Join Date: Feb 2004
Location: 1985
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
When my m6 swap was done Had the same problem, chased and chased it till I finally found out that the throttle body decided to become slightly sticky and hold open just enough to cause 1500-2100 rpm constant hold.
Would go to the engine bay and attempt to fix / close the tb the changes I had made to tune to figure out what was going on was causing it to high idle while the throttle was closed- ( basically tuning was done wrong from the over sight of the TB ) - Good luck -
Get a stock M6 file and do a compare - and double check that everything for idle and idle control are set proper. If everything is- Get outta the tune and look for leaks and such - I spent to much time thinkin I over looked something in the tune cause the 224 cam and m6-
Would go to the engine bay and attempt to fix / close the tb the changes I had made to tune to figure out what was going on was causing it to high idle while the throttle was closed- ( basically tuning was done wrong from the over sight of the TB ) - Good luck -
Get a stock M6 file and do a compare - and double check that everything for idle and idle control are set proper. If everything is- Get outta the tune and look for leaks and such - I spent to much time thinkin I over looked something in the tune cause the 224 cam and m6-
03-12-2009, 07:25 PM
#10
Teching In
Join Date: Jan 2009
Location: new tripoli
Posts: 48
Likes: 0
Received 0 Likes
on
0 Posts
i'm haveing the same problems no trans swap i have an m6 and i tried to get mine dynoed and the car would lean out considerably, i have a tps code it wont thorwo a ses light but it makes my car run like crap i was told to get your voltage of your tps. do u have an aftermarket throttlebody??? i'm going to get mine looked at this weekend i will let you know if i get it fixed or not.
03-14-2009, 11:17 PM
#12
12 Second Club
iTrader: (3)
Join Date: Apr 2008
Location: Bay Area, CA
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
this happens to me sometimes. usually after i mess with my throttle body, such as revving it by hand at the throttle body. so sometimes the spring or whatever doesn't retract it all the way back and the tb gets stuck open slightly causing it to keep the rpm's up. so i just pull the throttle body closed as far as it can a couple times. sometimes that fixes it sometimes it will keep idling high for a while but usually fixes itself out after driving it for a while.