Question about 1999 Jeep Wrangler
My jeep backfires like crazy power goes in and out with constant idle changes in the first quarter mile, then with flooring the vehicle it goes away, leave the car for five minutes and it starts all over again. The jeep has been in and out of dealers no code comes up, just put a new exhaust maniforld on it same problem, anybody with any answers out there thank's
Fairly common problem. Typical scenario is start vehicle, runs fine
for 15 to 30 seconds and begins to backfire when placed under load as
customer tries to drive vehicle. Flooring usually makes the problem go
away. Usually does not throw a code.
Fix is to replace the upstream 02 sensor.
Posted on Jan 10, 2009
Have the idle air control valve/air bypass which ever it has, checked,. look for a vaccum leak
Posted on Nov 16, 2008
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Posted on Jan 02, 2017
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