Question about 1999 Chevrolet Blazer

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1999 Chevy Blazer no power while driving, then full power, why?

I have a 1999 Chevrolet Blazer 4.3 and it has recently been running like ****. When it shifts out of 1st gear it revs up to 2000 and acts like it losses power, hits 2500-2700 and "comes to life"! I want to think that this is a tranny problem. Ive had a tune up done recently(plugs, wires, cap, rotor) and a new fuel pump and filter 5000 miles ago. I also had the cat converter gutted a few weeks ago adn seemed to run problemless after that, but now it has been going back to how it ran before that, any ideas?

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Is it easy to fmove catal. conv. try if its clogged. cheap try dont cost a peny. becareful with gasket. good luk claymister

Posted on Dec 04, 2011

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My husband bought a can of maf cleaner and cleaned the Mass Air Flow sensor and it helped a lot.

Posted on May 21, 2009

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Throttle position sensor and mass air flow sensor. had the same problem. throttle position sensor is easy to change but I had a shop do the mass air flow sensor.

Posted on Apr 20, 2009

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