4,000 miles ago, I had a new rear catalytic converter put on my Escape b/c it had become clogged.
I recently replaced all six plugs and coils b/c a few cylinders were misfiring. After doing that, I was soon was getting engine codes from two O2 sensors for 'lean' gas. So I checked for vacuum leaks, verified all hoses and connections were ok, the manifold bolts were torqued correctly, and I could not find any leaks. I replaced the PCV valve (the old one barely rattled anymore)so I am hoping I fixed the 'lean' engine code issue.
Now, the same converter is clogged again after only 4,000 miles. My questions.
Did the converter possibly become clogged b/c of the cylinder misfires and 'lean' gas issue?
Are there other underlying issues I could check out that may be causing the converters to fail?
I am not sure if I have solved the problem with new plugs, coils and a PCV valve, or if there is something else going on that will destroy another converter.
Thanks to anyone in advance for your expert advice.
have the same problem?
Monday, March 28th, 2011 AT 3:05 PM