ugly backfires

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Dec 31, 2006 | 05:10 PM

MxWickedZ28

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From: southtexas

ugly backfires

well i just replaced my knock sensors and everytime i floor the car i get a loud popping sound when it shifts, sounds like an ugly backfire, read the codes and my map sensor vaccuum was extremely low at wot, replaced it..still gettin nasty popping....any ideas would help my fustration.....

Dec 31, 2006 | 05:14 PM

cowboysfan

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From: Corpus Christi

u got a m6, if yes. probably ned a tune I I get that popping sound but only when I power shift at WOT. plus I'm running TD's X-pipe, dumped.

fuerzaws6

Dec 31, 2006 | 05:27 PM

MxWickedZ28

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From: southtexas

nope a4

Dec 31, 2006 | 05:36 PM

LilSlo1

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From: Plainfield, Illinois

Quote:

Originally Posted by MxWickedZ28

First Question is what year is you car ? The reason why i ask is that the 98-00 (i believe) have the knock sensors in the intake valley (under the intake) and the 01 and new have Ls6 blocks with the knock sensors relocated somewhere else.

Anyways if you have the older in the valley knock sensors, I would go back and check your work. Mabey you missed something as in vacum line or wires. If not mabey you pinched a intake gasket or something to that effect, or even worse mabey somehow the intake manifold is cracked somewhere.