After you have it running for about 15 minutes, look underneath the car, just under and behind the engine, also under the hood at the exhaust manifold. If any of these are glowing red, this is your issue and replace the catalytic converter or pre cat(precat you can see under the hood). The fuel is filter is likely also. If this has not been replaced in the last 15,000 miles it should be done anyways. Let me know what you find.
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After you have it running for about 15 minutes, look underneath the car, just under and behind the engine, also under the hood at the exhaust manifold. If any of these are glowing red, this is your issue and replace the catalytic converter or pre cat(precat you can see under the hood). The fuel is filter is likely also. If this has not been replaced in the last 15,000 miles it should be done anyways. Let me know what you find.