SVT THIS

iTrader: (27)

Hey all,
I don't know if this is in the right section or not, but, I thought it was. If it isn't sorry.

Anyways, the motor in question is the one in my sig. It has a full manual 4L80e. It usually drives perfectly, however, it does something somewhat annoying every now and then. When I drive it as soon as starting it up (I tend to give it a minute on normal days, longer on cold days) it will feel sluggish. By sluggish I mean it drives like you are trying to drive a 6-speed from a standstill in second gear. It sounds completely shitty as well. It will continue on up through 2nd gear. Usually, if I go WOT real quick the problem is solved. It also does it if the car has been sitting at idle for a long time. Like, if there is a really long stoplight or if I am at a drive thru it will happen occasionally. Like I said, it doesn't happen all the time and is always cured by a quick WOT.

The car has been dynotuned by Ed Wright from Fastchip. It has LS7 fuel injectors but I am still on a stock fuel pump.

Could the fuel pump be the issue? Could it be the tune? What are your all's thoughts.

SVT THIS

iTrader: (27)

TTT help if ya can

Frost

iTrader: (45)

If it has been like this since it was tuned, why not take it back to him and tell him there is a little work left? Other than that, there's not much anyone in here can help with you if you don't tune your own car.

02LS1z

iTrader: (11)

Thats weird because i am having the same problem. I noticed it once the weather started to warm up so im think my car may be loading up on fuel down low. If any tuner can chime in and give us some ideas that would be great.

Black02SLPSS

iTrader: (5)

Out of curiosity are you still running with a MAF or did you go with a speed density tune?

02LS1z

iTrader: (11)

Well you might want to check your 02 sensors because i had my tuner plugged into my car and the 02 sensor on the passenger side was the culprit. Thats what was wrong with my car and i had the same symptoms. hope this helps

LoudmouthWS6

iTrader: (3)

if its thorwing a code you might want to check the o2 sensors, i had that problem, also you may want to change out you fuel fliter, its cheap and easy so it want hurt if that aint the problem but i was running a little odd and changed mine and now it runs better, and you might want to throw in some injector cleaner

vbcamaro89

did the car do this before the tune or after? if it started doing this after the tune i would head back to your tuner and tell him everything word for word the car is doing other than that injector cleaner, fuel filter, spark plug change even maybe.....