My 2002 4 My 2002 4 by 4 chevy blazer only goes up to 2500 rpms I have replaced the fuel pump and the mass airflow sensor and it still has not works what could be the problem please help!

Asked by Jun 24, 2015 at 07:12 PM about the 2002 Chevrolet Blazer LS 4-Door RWD

Question type: Maintenance & Repair

3 Answers


Check air filter


Exhaust system high back pressure. They make a test kit at most local parts stores and it is a DIY unit.


^^^ most likely due to a clogged cat. There is a small chance a it could be the tps. Any codes?

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