Thread: Lurch at 50mph then tach goes out

At around 50mph, my transmission will kind of lurch/shake the whole car and the tach goes out. This has happened for a little while.

I would just like to know wtf is happening...

thanks

does it stall out?

maybe the CPS is going out

No, it doesn't stall, the tach just goes to zero until you turn off the engine and restart it.

How would a dying ckps explain the lurch/shake?

i never had any shaking when my crank sensor went out in my old GT.... but tach dropping to 0 is a good sign thats the problem.

Well i don't really want to spend $38 on something i am not sure will fix the problem, so i guess i will wait until either the trans blows up or the cps dies...

Actually it has been throwing dtc's randomly every blue moon so maybe if i can get it scanned before it goes away it will tell me something.

Puzzling.

Scan it and see what you get for codes. CPS IMO.

codes should still be stored in PCM even if light isnt on.

Ok didn't know that, ill go get it scanned.

well whats going with your gp?

Ha i don't know man the garage says they are too busy to scan her up.

wow thats lame as hell... id find another shop... it literally only takes minutes to do.

I know the anticipation is probably killing you guys. Im gonna try again on friday at a different shop hopefully the code will show up and will be just the ckps.

I got it scanned and it nothing showed up, it hasn't been the lurch lately but the tach did cut out.

Hopefully it will throw another code and i can get it in then.

Me too it just started recently