dickeymoore

Hi,is there a way to tell if my Mass Air Flow Sensor is BAD,I have a 87 IROC-Z runs okay when idle but when I start up the road the car sputters and cuts out then the Check Engine light comes on,have installed NEW plugs,wires,rotor and cap any HELP?THANKS

ChoobinatoR

check your codes with a paper clip, it may be or may be not the MAF, but you should probably fix whatever is causing the CEL... might be related to your issue.

to check codes:

http://www.automotivetroubleshooting...e_testing.html

dickeymoore

How do I check the codes with a paper clip?

ChoobinatoR

stick your key on the accessory mode, so you get dash lights on.

stick a paper clip in the top 2 terminals (A and B, scope that link and you'll see exactly where to hook the paper clip to)

so, you'll need to bend that paper clip in a U or V shape, and be sure (grab a light perhaps) you are connecting both metal terminals A and B.

after you do that, keep your arm relaxed because it might take a few mins to get them all.

your check engine light will blink morse code. it works by this:

1 short flash = 1
1 long(er) flash = 10

you get the actual number by adding the flashes.

for example:

the first code you get will be 1 long flash and 2 short flashes. this means code 12. each code will repeat itself 3 times and then go to the next (if there is none then it will cycle code 12 all day long).

after a complete cycle of all codes, it will throw you another code 12, 3 times.

to decipher the codes check your Chilton/haynes manual, or scope out: http://www.gmtuners.com/OBD1_DTC.htm

you'd be looking for a code 36 (MAF error). gl bro.