my 2009 Chevy Malibu hybrid is losing power bad. anyone know about these???

[akenmille]

This seemed to happen after I put in synthetic oil on an oil change. Can that be the cause? I brought it to 2 different mechanics and they said the o2 sensor and mass airflow sensor were bad

 

[Gerle]

The oil change is very unlikely to have caused your problem. A bad mass air flow sensor would make the car act the way you describe it. Well, at least that's what my non-hybrid 1995 van did in 2006...

 

[bryanl]

Bad MAF can do that. I don't know about an O2 sensor, but don't replace either until you get a diagnosis from a real mechanic. What cables, hoses, or devices could possibly be touched while changing the oil and filter?

Find a Chevy forum.

 

[Jimzz]

Is your check engine light on? Have you pulled the codes? Advance or AZ will pull for free.

 

[boomerang]

I'm dead set against throwing parts at a problem but I would replace the MAF if two different mechanics are in agreement. Even a person with minimal mechanical skills should be able to do that themselves. But know your limitations. If you're not comfortable doing it, have it done.

I would hold off on the O2 to see the results from the MAF replacement especially if there are no codes. You also don't know which O2 it is. They do have a tendency to get "lazy" after a while.

 

[BUTCH1]

I'm dead set against throwing parts at a problem but I would replace the MAF if two different mechanics are in agreement. Even a person with minimal mechanical skills should be able to do that themselves. But know your limitations. If you're not comfortable doing it, have it done.

I would hold off on the O2 to see the results from the MAF replacement especially if there are no codes. You also don't know which O2 it is. They do have a tendency to get "lazy" after a while.

Keep in mind that the MAF sensor is part of the intake housing and the tend to be expensive, usually well over $125, have it checked with a scanner before he stars throwing expensive parts at the problem.

 

[boomerang]

Keep in mind that the MAF sensor is part of the intake housing and the tend to be expensive, usually well over $125, have it checked with a scanner before he stars throwing expensive parts at the problem.

I hear ya but he did say two mechanics said the MAF is bad.