01 gs300 backfire ?
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Driver School Candidate
Joined: Jul 2011
Posts: 30
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From: va
2001 gs300 need help car just started it acting up backfiring
Recently just changed new plugs( ngk inridium gap is .004)n (new wires oem ) then check engine came on start backfiring ..scanned the code n it said knock sensor ...keep in mind car wasnt actting up til new plug n new wires went in ..car is running fine n idle normal n drive smooth but still dont know y is backfired. ..only backfire when I stomp on da gas real hard ....I even cleaned the mas intake sensor , clean out the vvt sensor and the lil oil filter........check engine light still on n still backfire on fast acceleration. ....plz help .....ty in advance guys
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A malfunctioning knock sensor will not cause one of our cars to backfire, period... Being that that has no bearing on your backfire, the most common other cause is a coil in the wrong place or spark plug wire in the wrong place... not sure if it is possible because of wire lengths, but maybe a coil wire (the plug from the ecu, not the spark plug wire) got swapped...
Aside from that, hard to say unless you've got something else unplugged, but I can't imagine what in the intake system that would cause a backfire...
Aside from that, hard to say unless you've got something else unplugged, but I can't imagine what in the intake system that would cause a backfire...
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Thread Starter
Driver School Candidate
Joined: Jul 2011
Posts: 30
Likes: 0
From: va
Still cant identify the prob ...check egine light still on n same code saying knock sensor circut 1 ...imma just go head n replace the knock sensor just to see if the issue will goes away ...ty in advance for helping
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