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2G high idle/ surge

stheodore10

Proven Member
78
0
Apr 3, 2012
Hillsborough, New_Jersey
ive replaced the isc, tps, adjusted the tps, cleaned the tb, and im stumped. i start the car, the rpms stay extremely low and alomst stalls until i give it gas, then i drive it and when its idling, the rpms stay at around 2k. then a few minutes into the drive itll surge between 1.2k to 1.7k. i need help real bad
 

stheodore10

Proven Member
78
0
Apr 3, 2012
Hillsborough, New_Jersey
from what i know theyre stock injectors. i never changed them. also could this really be boost leak related? id say thisd have to be a pretty big boost leak
 

stheodore10

Proven Member
78
0
Apr 3, 2012
Hillsborough, New_Jersey
Actually yes, during my efforts to find a shop to do a boost leak test, my engine threw a p0505 code again -__-
 

rebuilt_gsx

Proven Member
44
2
Sep 20, 2012
Racine, Wisconsin
I've been throwing a P0170 code which is a fuel trim code and my car idles kind of high as well at like 1500 rpms and as I drive it sometimes goes back to normal and it also surges at times. Not a lot it only happened a few times... any input?
 

Boddie

Proven Member
87
0
Aug 21, 2012
Ames, Iowa
Dang... my car just started the idle surge thing this past week as temperatures started to be in the low 40s :( Although, I know I have a few bad boost leaks that need some fixing.
 

Lou98GSX

15+ Year Contributor
705
64
Mar 13, 2004
Carmel, New_York
it sounds like a vacuum leak . you should try a smoke test to find the leak .vacuum leaks will cause high idle and surging .
 
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