Question about Cars & Trucks
The 1986 ford f-150 that I own went in for service to replace all the "O2" sensors. $260.00 in sensors later the technician tries to start the vehicle but can't. he pumps the gas pedal and fills the cylinders with gas and when it finally does start the gas in the cylinders ignites and causes a serious backfire that rips open the seam on the 6 month old muffler installed in may 2012, as part of an exhaust replacement from headers to tail pipe when I picked up the truck on January 10, 2013, the service manager said that the $260.00 in sensors and all the labor was free. I started the truck and it sounded like a SHERMIN TANK!!!!! I questioned them about it and they told me exactly what I told you. I tried to drive it to another repair center and it backed fired, wouldn't idle, died everytime I let off the gas. what are some of the internal damages related to this incident
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Posted on Jan 02, 2017
Check the heat shield on the Catalytic Converter, after a few years they start to rust off and rattle. Crawl under the Pathfinder and bang along the Converter and muffler area and see where it's coming from.
Good chances are, it's from the heat shield since you already had everything changed from the Cat back.
Good luck and hope this helps.
Posted on May 11, 2009
If you cleared the codes with a code scanner, or battery disconnect, all is should take to trigger the problem again is 2 driver cycles.
Drive cycle :
Operating temp engine ( let it warm up )
At least 1/2 tank fuel
A run of normal throttle usage, to maintain at least 46 mph for 5 min, back down to a stop and then back over 46 mph again ( 5 min ).
2 cycles of this should have the DTC P1000 code removed ( tests completed ) and if the error is still there, the CEL should illuminate again.
Posted on Nov 04, 2009
have you checked to see if you have a bad came or lifter. that would make it backfire. if it kind of spits fuel it maybe cam. if it throws fire than it could be timing like a bad chain.
Posted on Feb 12, 2010
i think the catalytic converter is clogged up, meineke , midas or somewhere of that sort will test it for free where i live, call ahead and check where you live , it only takes them a short time to do this test, and it sounds like you've spent plenty, its a free test, and can very well cause the problem you say you have GOOD LUCK!!!!!
Posted on Jan 16, 2011
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