Okay this has been driving me crazy and Iv been dealing with it for about a year now. I know there are tons of threads kinda like this but nothing is working.
The car is a 03 gt 2v with a saleen supercharger. Basically a m90 supercharger. Its basically stock besides all the components to work with the supercharger (injectors/fuel pump etc)
If I baby the car it runs/idles okay, not perfect but okay. Now say I go out on the highway and beat on it as soon as I slow down it will hardly stay running at an idle. When I come to a stop it has a really high idle (stays around 1800 rpm for about 25 seconds) and then it drops and starts surging bad (jumps from 200 rpm to around 1100 constantly) when I take off and cruise around certain speeds the car starts bucking really bad. And it will stay running like this for weeks.
Iv replaced the o2 sensors, cleaned the maf, cleaned iac, and tryed a few other things. No leaks anywhere.
I found a thread that someone said to go on the highway and go to 65 mph and keep it in 5th gear and decelerate to 35 mph a couple times in a row and it will relearn the tune or something. Well I tryed that and and I can't believe it but it actually worked. It will go from surging/dieing to running smooth as can be. And as soon as you beat on it again it runs like crap again
Does any one know why this is happening? I have to baby the car at all times unless I want it surging/bucking/high idle. Atleast I know a temporary fix but no one can figure out why it does this.
I had the car for 2 years and for the first year it ran perfect and out of no where this started happening.
The car is a 03 gt 2v with a saleen supercharger. Basically a m90 supercharger. Its basically stock besides all the components to work with the supercharger (injectors/fuel pump etc)
If I baby the car it runs/idles okay, not perfect but okay. Now say I go out on the highway and beat on it as soon as I slow down it will hardly stay running at an idle. When I come to a stop it has a really high idle (stays around 1800 rpm for about 25 seconds) and then it drops and starts surging bad (jumps from 200 rpm to around 1100 constantly) when I take off and cruise around certain speeds the car starts bucking really bad. And it will stay running like this for weeks.
Iv replaced the o2 sensors, cleaned the maf, cleaned iac, and tryed a few other things. No leaks anywhere.
I found a thread that someone said to go on the highway and go to 65 mph and keep it in 5th gear and decelerate to 35 mph a couple times in a row and it will relearn the tune or something. Well I tryed that and and I can't believe it but it actually worked. It will go from surging/dieing to running smooth as can be. And as soon as you beat on it again it runs like crap again
Does any one know why this is happening? I have to baby the car at all times unless I want it surging/bucking/high idle. Atleast I know a temporary fix but no one can figure out why it does this.
I had the car for 2 years and for the first year it ran perfect and out of no where this started happening.