Broken MAF with PO102
Broken MAF with PO102
05-23-2007, 07:13 AM
Anyone else ever had this happen?
I had nothing to lose so I sprayed the MAF wires and put it back on. I had to move it around so it would mate up with the piece in the throttle body and it went all the way on. I fired the motor up and it ran OK. I cleared the code and drove it around and about 30 minutes later the check engine light came back on (still idled and ran OK) and it was code P0102 again. I will check the voltage later today but it looks like I need a new MAF anyway.
05-23-2007, 07:41 AM
I just found this while surfing about p0102.
oil dip stick not fully seated
oil fill cap loose or missing
I changed the oil a month or so ago. The dipstick was fine. I check the oil yesterday and noticed that a piece of the oil dip stick that sticks into the tube was broken and sliding up and down the dip stick. It looks like a pencil eraser. It won't come off because of the bend on the bottom of the dip stick. I ignored it yesterday because of the MAF. Maybe this is my problem!
Looks like I still need to buy a MAF however.
05-23-2007, 07:52 AM
Don't get too far off track. Check the voltages at the MAF sensor electrical connector mainly the PCM 5 volt reference. As far as MAF output back to the PCM module forget about it unless you have an oscilloscope and know how to use one. DTC P0102 is typically a bad MAF sensor. It is not a low voltage condition but a low frequency. DTC P0102 indicates the PCM module has detected a MAF output frequency that is too low at the low side threshold. < 1200 Hz.
MAF color coding and pin configuration left to right. Pin C, B, and A in that order.
C = PCM reference voltage (5 volts)
B = ground
A = MAF signal output
According to my documentation Pin C can be color coded either pink or brown. Pin B is typically black/white (ground). Pin A is either yellow or gray/white.
Replace the MAF sensor but use a OEM/GM and not an aftermarket reman. like A1 Cardone.
I changed the oil a month or so ago. The dipstick was fine. I check the oil yesterday and noticed that a piece of the oil dip stick that sticks into the tube was broken and sliding up and down the dip stick. It looks like a pencil eraser. It won't come off because of the bend on the bottom of the dip stick. I ignored it yesterday because of the MAF.
That broken piece on the dipstick will not cause your MAF problem. It is part of the dipstick handle and should have an o-ring seal to keep oil from coming out the dipstick tube which never happens even with the piece broken.
05-23-2007, 01:18 PM
Thanks for the reply.
At this point I will just get a new MAF sensor since the old one is broken and I don't trust it. I may play with checking voltage just for the practice since I can't mess it up anyway.
I read on other posts about not using Cardone sensors. I called an autoparts store just out of curiosity and was told they had a new one for $167.00 with no core charge and lifetime warrantee. I called my local pontiac dealship and they have a new one for $232.00 plus an additional $60.00 core charge if I don't bring the old one. I was hoping to keep the old one as a spare but I guess since it is broke it don't make sense. It is hard to pay the higher price but I will bite the bullet and take your advice. Thank you for the help.
I'll post back the results. It may be a few days though.
05-23-2007, 09:29 PM
I had some time this evening so I took the car apart. I was able to remove the broken plastic part by wrapping scotch tape around a socket extenson and pushing it into the hole. I cleaned the hole out with the MAF cleaner even though it looked clean already. I put the new MAF sensor on and took the car for a drive. It seemed to drive better and shift better but it may be my imagination. I should know for sure tomorrow when I drive it more and check it for any pending codes if the check engine light is not on. Cross your fingers for me.
I did not notice until I took it out of the package that it was a remanufactured part. When I called the dealership early today they said it was a new part. The part number on the package was 8896-1008. It says "SENS REM MASS AI". I paid $232.36 plus $60.00 core charge plus $17.54 tax for a total of $309.90. He said I will get the $60.00 back when I return the core. I will go back on Friday because I ordered some other parts for another car. I will ask them what a new MAF costs. He told me earlier today that it has a 12 month warrantee. I don't see any warrantee mentioned on my receipt.
I am a little pissed.
05-24-2007, 06:16 PM
So far so good. I drove it around last night and this afternoon and so far no service engine soon light and no pending codes. Looks like it is fixed.
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