This is topic Car idles crazy! in forum Tech Talk at Northern California Ford Owners  .


To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=023463
Posted by BLoWN FR500 (Member # 8766) on :
 
So I got my heads installed, aluminum trick flows heads roller rockers, trick flow track heat intake, 42lbs, 90mm lightning Maf, put my vortech s trim back on, got a tune. & my car keeps idling crazy then turns off??? Why? I changed the o2 sensor like a month ago, I checked em yesterday and there hella black already. Is this a tune problem, I got a tune at Nextgen. My car also lags as in misfires when I push the gas? Rpm's drop fast too! Any one know why???
 
Posted by Camara90 (Member # 134) on :
 
I have heard those 90mm Lighting MAF are shit on our cars. Might start there, but then you need a retune. I know tuners hate them.

[ December 09, 2010, 12:36 AM: Message edited by: Camara90 ]
 
Posted by SLOWSN95 (Member # 8269) on :
 
How was the car running during the tune? Sounds like a possible MAF issue.. but dont quote me on that since I've never seen the car. Got a friend that has a 90mm MAF from a 03/04 cobra on his 98 cobra and his car did/does the same thing (revs and misfires)and it was an issue with his MAF.
 
Posted by BLoWN FR500 (Member # 8766) on :
 
Ya that's what a couple people told me, but that's wack cuz Nextgen told me to get the lightning maf. But I guess I gotta upgrade that maf then
 
Posted by Blind (Member # 3052) on :
 
if it has never ran well, then it has a bad tune.


a lightning maf can work just fine in a draw through setup car with 42lb injectors, the MAF might need cleaning or there could be something wrong with it, was it bought new or used?
 
Posted by stangin' (Member # 514) on :
 
what was the purpose of the tune if it's running like shit right now? i would be talking to them.
 
Posted by BLoWN FR500 (Member # 8766) on :
 
He said "he doesn't think it's a tune problem"
 
Posted by 50Reasons (Member # 6452) on :
 
quote:
Originally posted by BLoWN FR500:
He said "he doesn't think it's a tune problem"
Don't sound right
 
Posted by Blind (Member # 3052) on :
 
have you done a KOER self test to see if there's any codes?
 
Posted by 94 N.C.F. GT (Member # 3946) on :
 
quote:
Originally posted by 50Reasons:
quote:
Originally posted by BLoWN FR500:
He said "he doesn't think it's a tune problem"
Don't sound right
Not at all wtf [Confused]
 
Posted by 2slow2go (Member # 9159) on :
 
did you tune it before of after the heads?
 
Posted by BLoWN FR500 (Member # 8766) on :
 
I Had a tune before and after the heads.. Last. Time he tuned it my car would sometimes misfire at high Rpm's. This guy really sucks at tunning!
 
Posted by Blind (Member # 3052) on :
 
quote:
Originally posted by BLoWN FR500:
I Had a tune before and after the heads.. Last. Time he tuned it my car would sometimes misfire at high Rpm's. This guy really sucks at tunning!
a misfire at high RPM's is probably not a tune issue, more likely something is wrong mechanically.
 
Posted by x42bnx (Member # 9529) on :
 
quote:
Originally posted by BLoWN FR500:
I Had a tune before and after the heads.. Last. Time he tuned it my car would sometimes misfire at high Rpm's. This guy really sucks at tunning!
I agree, I could have told you stay away from there. AED get your money back nextgen BLOWS.
 
Posted by 92stangLX (Member # 3252) on :
 
First off.. check for vaccuum leaks.. intake gasket, lines, etc. That would cause a major hunting idle. Also, those stock Vortech "dryer hose" intakes are known to leak.

You can try other things like cleaning your MAF and checking codes.
 
Posted by 03RedfireSVT (Member # 10069) on :
 
quote:
Originally posted by 92stangLX:
First off.. check for vaccuum leaks.. intake gasket, lines, etc. That would cause a major hunting idle. Also, those stock Vortech "dryer hose" intakes are known to leak.

You can try other things like cleaning your MAF and checking codes.
OR, you can just take it to AED, and they'll do everything for you. Problem solved. Sometimes, it's better to save, make the drive and pay the coin to get it done right, then go with the convenience of maybe that shop being closer, etc.
 
Posted by 85notch5.0 (Member # 9804) on :
 
quote:
Originally posted by BLoWN FR500:
I Had a tune before and after the heads.. Last. Time he tuned it my car would sometimes misfire at high Rpm's. This guy really sucks at tunning!
Then why would you go back a second time?
 
Posted by BLoWN FR500 (Member # 8766) on :
 
Get my money worth from them until I can save up for another tune!
 
Posted by clone nprogrss (Member # 10342) on :
 
If nextgen sucks at tuning y would u take ur car there??? SMART!!
 
Posted by SPECIALTY15***MM PERFORMANCE*** (Member # 2978) on :
 
is your blow off valve open or is it going back into the blower. i had a similer problem with a car recently. and it was a after market blow off valve that was open causing the car to run like the intake tube was off. we fed it into the the powerpipe and it ran perfect. if that was the case your tuner should of caught that unless your using a mail order base tune. im using a lighting mass air and it works great.
 




Fueled by Ford Mustang Owners
on CaliforniaFords.com