Back Fire

[leehatten]

Hey Guys Every Time I Drive My Car On The Freeway And I Do Over 55 When I Lift My Foot Of The Gas It Backfires I Has Blown A Whole In My Up Pipe And My Down Pipie And Now I Hear A Leak In My Exhaust Manifold What Could It Be The Tps

 

[WhiteT78Supra]

check fuel filter may be dirty

 

[turbo6x2]

Check you ignition module. This is usually a sign that it's going bad. Make sure to only get a gm replacement. Aftermarkets ones don't hold a candle to a the GM ignition module and won't last very long either.

 

[leehatten]

WELL I MY IGNITION MODULE IS ABOUT THREE MONT OLD I HAVE ABOUT 1K ON IT AND I CHANGED MY FUEL FILTER TODAY and still the same thing it seem when my thorttle get to a certain point it run rought like it missing or something what could it be the car idle fine but when i get the throttle about 1/3 of the way open it like its missing. NEED SOME HELP GUYS IM LEAVING FOR THE MAINLAND TOMORROW I WILL BE GONE TILL THE TENTH ANYONE NEED ME TO PIC UP ANYTHING LITTLE THING NOT BIG THINGS CANT BRING BACK A A BLOCK YOU KNOW WHAT I MENA

 

[turbo6x2]

Any chance you got an after market ignition module? If so did you get a warranty? Just saying when ever my car has started to back fire under throttle it's the igniton module going bad. Another thing to check would be spark plug wires, make sure you don't have one burnt through. There's a couple that get pretty hot and can cook if you're not careful.

Just another thing I've had in the past, we re routed the ones that get a bit warm. Good luck and let us know if you figure it out.

 

[Jerryl]

Such pressure!

First off, fix ALL the exhaust leaks form the backfire.

Do You have some kind of scan tool or know someone that has one?
A new ignition module is good but depending on where you got it, it may be bad. Also,

Did you measure the coil pack?
Did you gap the plugs correctly?
Plug wires ok?
Check your grounds and voltage?

 

[T- Type Tim]

same problem on mine, adjust your cam sensor slighty counter clockwise.