Question about 1997 Jeep Grand Cherokee
Does bad convertor or muffler result code 51 because o2 sensors are good condition
Code 51 is a lean code and is not caused by a converter most likely a vacuum leak is causing this problem if the engine seems to run fine inspect vacuum hoses and intake gaskets for leaks or breakage
Posted on Dec 10, 2012
Testimonial: "thanks for a lot as soon as I will check the vauum hoses "
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Posted on Jan 02, 2017
Sounds more like an ignition misfire. Sometimes also, an exhaust leak in the pipe above the sensor can add enough air to cause the mixture in the pipe to ignite and cause the same problem. The first "weak point" in the exhaust is the muffler which is why it blows it up. Cutting out the cat will not solve this.
Posted on Oct 29, 2009
Black soot in water? You mean water in the tailpipe or black soot in the coolant in the radiator? Have you tested the manifold air temp sensor and the throttle position sensor? If they were OK, you may just have worn injectors that are allowing a bit too much fuel flow or a bad spray pattern. In the meantime, you could try replacing the plugs with a set that is one heat range hotter. If the plugs become slightly fouled, that can cause a snowball effect which makes the situation worse.
Posted on Nov 12, 2009
i would check with the dealer who changed the converter to check and see if the sensors were damaged while they replaced the converter or may be they have forgotten to hook it back up check before you throw away your good 02 sensr
Posted on Nov 12, 2008
My first question would be, "did you disconnect the battery before welding the exhaust?" This could fry the ECU. What codes are you retrieving now?
Posted on Mar 08, 2010
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