hi there fellow f-body freaks! i need your very very very (did i say very?) valuable help once again! i know (now, thanks to a very helpful fellow f-body guy!) that the MAF relay is against the firewall-WHICH ONE IS IT? there are three different ones, i know what one of them is, i just replaced the fuel pump relay. the stamping numbers are missing, i dont even know if i got the right one but they both connect by the same plug so what the heck ill try it. your help will be greatly appreciated

 

If my diagram for is correct for your car, (it's '89) there are 4 wires and the wire colors are:

D=Org
A=Dk Blu
E=Org
F= Blk

Maybe?

If I was having trouble with MAF codes I'd buy a new one, put it in as the power relay first since the burnoff relay cycle sets its own code when it doesn't complete the burnoff cycle. If that didn't fix it I'd either swap them around, or, just replace both of them.

Hope this helps

ftp://ftp.diy-efi.org/pub/gmecm/manuals/1227165/

 

can someone explain what and how the MAF burnoff relay works
Thanks
Aj

 

http://www.asashop.org/autoinc/oct98/techtips.htm