Hi all, I need some help drving home from work today i noticed that when first gear on my superchagred gt get up to aroound 4k rps the car sort of stops accelaeratinng, it seems to be the same with each gear which is fustrating to say the least. my car is a 2006 mustang gt with a supercharger, it was an unusally hot day today but this seems reall odd, I may take it to the shop tomorrow, but I wanted to get soem idea what could be happening (gears? hotday and bad supercgarger proformance?)

please help if you can i am pulling my hair out.

 

i guess i'd be interested in
the air/fuel ratio

 

I'd be interested to know what your fuel pressure is during the problem, and AFR like hammeron asked.

 

is it a standard?? could that be what happens when a clutch starts "slipping" at high rpms?


i'm not sure, never had a clutch do this......

 

looks like i shoved the problem, the supercharger belt was not tight enough

 

that was my next guess!!! lol jk

glad you figured it out!!

 

How do you tighten a belt if I may ask, normally the tensioner is what keeps the belt tight.

 

The tensioner is what keeps it tight, I think a combination of the heat and the shop that chanerd my supercharger oil a few months ago diden't help, I had a fine black powder all around the belt.

 

My guess would have been maxed duty cycle on your injectors, but I am glad to see you figured it out. Out of curiosity, how did you go about tightening the belt outside of the tensioner?

~Matt

 

I tighted the belt buy folling the instruction in the procharger manual, loosed the bolt attached to the tensionioer the turned the actual tensionr bolt counter clockwise.