homerunhtr21

iTrader: (18)

I just installed pacesetter l/t and ory on my 2000 t/a and it sounded good the first day but then today I noticed a kind of grinding sound when i push on the gas or turning sometimes. At idel it sounds fine, but then when ou try and go it sounds horrible..PLEASE HELP !!!!!!!!!

crainholio

iTrader: (2)

Sounds like it's dragging on a tire or other rotating part.

Have ya actually crawled under it and looked for rub marks yet?

homerunhtr21

iTrader: (18)

I work at a body shop and we have had it on the lift the past 2 days trying to find out what it is. We made sure that there was nothing rubbin on grinding anywhere and we THOUGHT that everything was fixed but obviously not

crainholio

iTrader: (2)

Maybe it's a loose part vibrating?

(I spent 1/2 day at Mufflex while they diagnosed a weird high-pitch "grind" type noise at certain engine RPMs, turned out to be a plate on the exterior of the muffler had popped a weld)

JunkyardZ

iTrader: (7)

Did you check over the k-member really well? Thats where my pacesetters were rubbing. Everytime you took off it would rub and make a grinding like noise as the header scraped agaisnt it.

sbusby

Even when you have it on the lift, that doesn't mean that when it is settled on the ground it wouldn't rub. Did you test it running when on the lift?

homerunhtr21

iTrader: (18)

yes we tested it on the lift. The only time you can hear it is when you actually drive the car. Thats what is so confusing to me ...

crainholio

iTrader: (2)

Sounds like the y-pipe is rubbing when the engine torques over under acceleration. No way to reproduce this on a lift.

(thank ya, thank ya very much)

homerunhtr21

iTrader: (18)

so what should I do?

crainholio

iTrader: (2)

If metal is rubbing, there's a shiny spot somewhere waiting for you to find it.

Or, just loosen up all the joints in the exhaust system and push the pipes way far away from any nearby body/chassis components.

Fabian

iTrader: (5)

Probably your y-pipe on the driver side. Theres a part that is VERY close to the floorboard...

stangkiller2005

iTrader: (15)

y-pipe to close to drive shaft somewhere?