Message: I have a 96 3.9l and i just got done doing with some modifications and now i have this noise. The modifictions i did was a V8 throttle body, and there was no problems. Then I changed the radiator, fan, and thermostat. Now if I am in netural or parked and I punch the gas and immediately let off it sounds like it backfires or misses or something.
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Subject: backfire or something