Skip the auto shop - Our mechanics make house calls

Q: Car is bogging and losing power - 1996 Chevrolet Blazer

asked by on

Had a po102 error Maf sensor was replace with new one, clear the code, but car still has same issue with bogging and lost if power, but no more codes coming up

My car has 18500 miles.
My car has an automatic transmission.

A: It is not unusual for there to be multiple ...

It is not unusual for there to be multiple failures when there is an engine management problem, particularly on a high miles engine, so the issue you had with the defective MAF sensor may simply have been just one of the problems. On older engines, the thing to do is start with a basic compression test to determine whether you are a starting with a basically sound "mechanical base".

If the compression test checks out OK, that is, there is no mechanical problem with the engine, but you are still experiencing poor operation, a scope will reveal whether the issue is "global" (all cylinders) or limited to maybe a cylinder(s) with faulty spark plugs, wires, or a failing fuel injector. If the issue is global, everything from a plugged exhaust to a plugged fuel filter to inadequate fuel delivery have to be evaluated, but again, a scope exam will get you in the ballpark of a proper diagnosis.

I recommend having a certified mechanic, such as one from YourMechanic, determine why the car is losing power and what is necessary to get it back into good working order.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Lifters and oil changed out, now notice a knocking sound.

A knocking sound is not a good sound to have. It could happen in a number of places. It could either be in the valve train or could be a piston rod or crank bearing worn out. Either one is...

Q: Loss of power

Hi, thanks for writing in. I would start with checking things such as the O2 sensor and mass airflow sensor. You should have a check engine light on which should have registered some fault codes in the computer indicating parts...

Q: Car shuts off, the engine runs in park

Hi! You may be experiencing an issue caused by the idle air control, the fuel injector, or EGR valve. If the engine runs fine while driving down the road, but won't idle, then thats different than it running bad all...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.