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18/10/2021 1:00 pm
Topic starter
Hey I also have a 2002 Chevy trailblazer ltz with 260000 miles and it started overheating it started overheating recently so I changed the thermostat but now the engine is misfiring like crazy am I missing something
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18/10/2021 1:07 pm
You probably have a failed intake or head gasket.
But it was working fine until I changed the thermostat I don’t get it
it's common on those. Especially with that mileage. Try check for vacuum leaks.
mine has 250000 and has never had a problem like that I had a cracked exhaust manifold once but it was really loud and you could tell. Any codes?
https://www.youtube.com/watch?v=vr8UllfGnRs&ab_channel=TheCarDoctor
Yes it says multiple misfires detected
misfire troubleshooting is covered in the FAQ