catalytic converter quick fix

Asked by Aug 06, 2017 at 12:16 PM about the 1999 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

My catalytic converter is turning cherry red
how can I fix this temporarily

2 Answers

Can I drill a hole to release the pressure?


It's not necessarily pressure that's causing the CC to glow. There could be a problem with excessive unburnt fuel going into the CC. It might be a misfiring cylinder or an injector which is stuck open. etc. Is your check engine light on? Before drilling holes, do a OBD scan and do an exhaust back pressure test to determine if the CC is clogged.

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