Mass air sensor

[Mr 5 0]

Kenneth:

I recommended replacing the MAF sensor as the quick and easy way of resolving the problem but of course it's expensive.

I assume you've already checked the TPS voltage for a steady climb as you open the throttle to max (engine off) and it's normal, right?

If so, put the MAF put on a tester and check the current output. In the case of a failed MAF sensor, the computer (ECM) will go to a backup strategy, using the TPS signal to create a MAF signal of its own. That's why you need a full array of test equipment to check all aspects of the MAF/TPS operation.

A good shop will have this equipment and know how to use it. It shouldn't cost too much (under $75.) to have it done.

There's a good chance the MAF sensor is defective but of course I have no way to guarantee that it is. Just making semi-educated guesses, from a distance, without any equipment and trying to at least point you in the right direction.