Thread: Clean a 95-96 MAF sensor

Lotsa info on the b13 and '00-'01 SR20DE mafs on here but i couldn't find any information on The 96-'99 ones, so i figured i'd contribute.

Little back story. Bought this car with 220k miles on it. It had a dramatic dip in power after 4000rpm, all the way to 5500rpm. Very annoying. The car would also die after firing it up, when it was warmed up ( in closed-loop operation ), unless i held my foot on the pedal.

I thought that this was due to the crank sensor being bad. Some people on the forum agreed. NOPE. Replaced that part, and did a *full* tuneup and the problem persisted. Did a compression check - 185psi across the board. So.... wtf?

I heard of many people cleaning the MAF and then having problems, so i was nervous about doing this. I ordered a spare for backup and figured i'd take this task on.

It was far easier than i thought. And my sensor wires were almost completely black!!!





Now the car has full power across the powerband, pulls like a beast compared to before i cleaned the MAF, and no longer dies when i start the car after it's been warmed up.

Ta da.. way to save yourself $200-$500 for a new sensor

Nice how to I tried to take mine apart before, the bolts where stuck!

Just did this to my car. Also regrounded the MAF wire to the Intake Manifold. Thanks for the idea!

This has to be one of the best things I have done to increase the mileage and overall "smoothness" and/or "liveliness" of the engine.

I am very satisfied with the overall performance.

Gas mileage went up? I might just do the same, it's a bit trickier on the E60's

Viprdude: ditto. I've only had this car a few weeks and feared that the engine was toasted before i did this. Glad it worked for you too!

Yes, i have a scangauge and i watch my MPG here and there. It's reporting about 2-3mpg higher on some straightaways. I don't know why - i figured the engine would be running leaner. But my MAF had a really intermittent signal before, so i think the engine computer was going spastically rich/lean at all times.

My idle GPH ( gallons per hour ) dropped from 0.26-0.30 to a steady 0.27 after the car is warmed up at 190-200deg. Idle signal was even more intermittent.

Makes me wonder what other sensors are friggin' toasted on this car. Ha!

Could be. I tried spraying the MAF elements directly, but i had to bust out the cotton swab. I'm not sure about your maf.

Going to attempt this this weekend

Worked great for me! Pulls hard to redline now.

looks like ill be doing this tomorrow morning...