2000 Chevy Blazer poor aceleration

SS35086

MEMBER
2000 CHEVROLET BLAZER
6 CYL
4WD
AUTOMATIC
102,550 MILES

My blazer is starting to have a problem with aceleration. The truck stubbles when you try to rev the engine and when you take it for a ride, it acts like you are tapping the brakes when the truck gets into overdrive. The truck has a full tune up, a new fuel pump/sending unit, new evap lines, fuel filter. It also has new 1/2 and 2/3 shift solenoids in the transmission with fresh fluid. Cannot figure out if it is either plugged exhaust or either a fuel problem. What do you think it is?

Thursday, March 11th, 2010 AT 3:26 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Lack of acceleration, chugging, hesitating, bogging etc. Could be caused by one of the following below.

Inspect and test all the following listed below and get back with some results

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.

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Thursday, March 11th, 2010 AT 3:33 PM