2000 Astro Running Poorly - MAP Sensor

[bzubricki]

I have a 2000 Astro and it sometimes runs very sluggish with delayed acceleration. However, if I unplug the MAP sensor, the thing runs great. What are the chances that simply replacing the MAP sensor will fix the problem?

[bzubricki]

I think I meant to say the MAF (Mass Air Flow). It is one of two sensors (the front one) that plug into the air intake tube. It just unclips and pops out.

[Blue Bowtie]

The MAF is about 4: in diameter and is clamped into the intake ductwerk. The small (about 5/8" diameter) sensor plugged into the top of that duct is the intake air temperature sensor.

Unplugging either should turn on the MIL. Unplugging the MAF should force the PCM into a Backup Fuel Mode. If the system has been a bit lean, that can make the engine seem to run better due to it's extra rich defaults.

[bzubricki]

I looked again. The clip that I unplugged actually goes into a rectangular black box that comes off of the intake tube. Sounds like the MAF plug based on your description. I also so the 5/8" plug on top but that is not what I unplugged to see the better performance. Is there a way to see if the MAF itself or the wires/plug going to it are bad?

[bzubricki]

FYI for the benefit of the readers:

I replaced the MAF Sensor and the van works great now. That's what the problem was.

[cryogenicz]

Can you get this MAF sensor at autozone? I searched for it, and I didnt find a MAF sensor.

-Graham

[pkdb]

Originally Posted by cryogenicz

Can you get this MAF sensor at autozone? I searched for it, and I didnt find a MAF sensor.

-Graham

I just searched "mass air flow" and found it on autozone for my 98 astro


http://www.autozone.com/N,314746/ini...cleSelect4.htm