I have a '87 IROC with a 305 TPI. When I plug up the MAF sensor the car runs really bad but it runs perfectly when unpluged. Do I replace the MAF sensor ($300) or do I just leave it unpluged.

 

i'm assuming that your ses light stays lit no matter how it's hooked up.whenthe maf goes bad you go into limp home mode when this occursit might feel better but thecomputer is limited by the base perrametters and locks the timing whichh means no advance.if you are justt driving and are not looking for performance leave it off,if you want the car tto run rightt i would replace it

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87 trans am,gm crate 350(4 bolt mains 10to1),L98 aluminum heads,LT4 hot cam,slp runners,slp 1 5/8 headers,3in.y-pipe,edelbrock base,hi flo cat,air foil,afpr,as&m ported plenum,gutted airbox,t-5 tranny w/centerforce clutch and a 3.27 9bolt(11.9in. brakes),ed wright's fastchip,relocated iat sensor,160 fan switch,tb bypass,accel supercoil,cap& rotor,hollowed maf,slp 3in. catback,a/c delete.

shooting for 13's!!!!!!!

14.10@97mph w/2.01 60'(auto ET)

slp catback is finally on!!!
fastchip prom is in.
kicks you in the *** at wot.
FLOWMASTER S.U.C.K.S

 

No the ses light isn't on

 

Your SES lightbulb may be burned out. I would check your codes with an Auto X-Ray if you have one or can borrow one.

You can get a remanufactured Bosch MAF from Autozone or Kragen with a 1 year warranty for 139.00 exchange under the name A1-Cardone.

 

300$$ get a wells su-145 MAF for 170$$ flows beter than Bosch. Do a search and you will find a link were you can buy it. ( have the adress at work...)

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GTA -89:Free flow muffler,dual 3" HF cats, Edelbrock headers, Vette heads, 1.52 RR 7/16, ZZ-9 cam, Big Mouth, AS&M LTR, !plenum, 52 TB, MSD 6AL, TPIS level V prom, Superior shift-kit and all the minor mods, a Canfield headed 383 in the works!! ready May 2001...ok..june...july..and with Accel DFI....looking for SR or miniram....
http://www.itv.se/tacs/members_cars/m279/m279.html (Swedish Trans Am Club)