I have a 95 JGC 4.0, i just replaced the CAT and now my check engine light is on.

5

Asked by Nicolas Feb 23, 2014 at 02:32 PM about the Jeep Grand Cherokee

Question type: Maintenance & Repair

I went about 3 years without a CAT and i just put one back on it and the check engine light comes on after the engine warms up.
Please help.Could it be the O2 sensor?

2 Answers

325

Take it to almost any car part store (i.e. autozone) and they will check the error codes and give them to you for free. That's always a good place to start.

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