bad MAF?

[JD1964]

Okay stevo thanks.

Actually it didn’t like the Savana MAF. It made the pcm add too much fuel and made it way rich. So I put the Camaro MAF back in without the screen. It didn’t like that either. Ran out of time for the moment but later I will remove the screen from the Savanna MAF and put it on the Camaro MAF. Then I’ll have the proper MAF with a good screen. I’ll post back if that finally fixes it.

[steveo]

it's' totally possible the fbody maf was damaged beyond repair when the screen contacted the wires. they're really sensitive. you could totally use the wrecker maf if you wanted to just recalibrate your maf table for it. you should also datalog and see what kind of AFGS you're getting when trying these maf sensors out. if you have an old datalog, you could easily compare aganist known good maf calibrations (you should get similar airflow for a particular MAP x RPM from a 'known good' log)

[steveo]

oh another thing you might not realize is that if you've been driving around without a maf, and you plug one back in, your BLMs are probably now trimming for your VE table and will take a bit to catch up and trim for MAF instead. it might be good to clear your BLMs when reconnecting the maf, before starting the car.

[JD1964]

Back in business! Put the screen from the Savanna maf on to the Camaro maf and put it back on the car. Cleared the blm and drove it around for 30 mins running it through all the various driving conditions. In the beginning of the drive it was still acting up a bit but it gradually got better. It's now back to happy and running great. The camaro maf survived and it wasnt a waste getting the maf from the Savanna since we needed the screen anyway.

[JD1964]

……..and I’ll keep the sensor portion of the Savanna MAF with consideration towards fiddling with its calibration. It’s good to know that’s possible. Thanks for the info Steveo

[steveo]

no problemo. you can pretty easily figure out a MAF calibration as the curve itself is pretty easy to find by hand once you've got a few good data points, it's the upper RPM ranges where you're pretty much going to be in power enrichment that are hard (unless you wideband tuned that thing) but again you can kind of guess the curve based on the other data.