1997 Infiniti Q45 Mass Air Flow Meter

[tommyg]

My Infiniti Q45 was losing power (could not accelerate at times) and the check engine light was on, so I brought it into my local mechanic who diagnosed the problem as a bad mass air flow meter (no output). The part is extremely expensive ($488). Since I didn't do the computer diangosis myself, I want to make sure that they are replacing the correct part. Could the problem actually be something else (such as a dirty PCV valve), or is it pretty clear that this type of problem arises from a faulty air flow meter? Thanks!

[maxnix]

Hopefully he checked the connection first. I am sure they fail, but can't remember a case on this board.

Tell us more about the mileage, maintenance, and location.

You don't use a K&N filter or pop charger, do you?

Welcome to the board. This post may be better answered in the Infiniti Mechanics forum.

[redmanfx]

My Infiniti Q45 was losing power (could not accelerate at times) and the check engine light was on, so I brought it into my local mechanic who diagnosed the problem as a bad mass air flow meter (no output). Thanks!

Are you refering to the Mass air Flow Sensor or MAF as we call it? This is right after the Air in-take box and is a square shaped box that looks like it's sitting on the air intake hose? If so, you can find them cheaper and there is one right now on e-bay for $150 bucks almost brand new. Check E-Bay "Infiniti parts" it's on page 18 or so. If it is the MAF you're talking about I'll help you find one cheaper because $488 is alot of duckies...

Red

[tommyg]

Thanks!! My Infiniti has approximately 94,000 miles, it has been maintained properly since we purchased it at 49,000 miles and is driven in Southern California. No, it does not have a K&N filter or pop charger.

Thanks again and I'll post this in the mechanics forum. I wish I would have found this board sooner.

[tommyg]

It is a 1997 Q45. I did notice that the TCS light was on along with the check engine light. Is there any reason for this? Thanks!

Tom

[maxnix]

I would assume it is an electrical connection at the MAF. Check it first before committing to a new one.