Hey guys, the MAF sensor on my friends car is throwing a code. And we took it to the shop, they said it was shot, and doesn't work. BUt his car pretty much works perfect, the only thng that happends is when he lets of the gas it will drop to like 800 then go to about 1500. and when he stops it barley idles rough. not at all like a messed up MAF should idle, is there anyway to test the MAF so we can tell exactly wut its doing?

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88' GTA 350 MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass

 

The good way to know if ur MAF is shot, is when in the car just unplug it and drive with it, it shouldnt be able run at all with the MAF unplugged, after try plugging it back in and if its still the same, MAF is shot

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1989 Firebird
2.8 v6, t5 swapped in

Ram Hi-po clutch, Cold Air, 1.6 rockers,Lakewood LCA's, Lakewood Lift bars, Wonder Bar, 3" y-pipe, Random Tech Cat, 3" I-pipe, Flowmasters, MSd 6a, MSD Coil, Accel 8.8 wires, Auto Meter Gauges (Water, Clock, Fuel Pressure, and 5" Sport Comp Tach)TB Bypass, 4th Gen Seats

Coming for my v6:
Panhard Bar, 4thgen front seats, Nitrous, Line Lock, Posi, Spohn Torque Arm & Subframe connnectors

"I'd rather run last in a full out race, than to NOT have run at all"
#3 Forever

 

another easy way is to start the car go under the hood and gently tap the MAF. If your car stalls then it's bad

 

That sounds like a bad MAF to me...

The other tests work great, and there's also a visual inspection- remove the MAF from the intake tubing, and look inside. You'll see the orange "frequency film". That film needs to be completely FLAT; no wrinkles or creases or curves are allowed. If it's damaged (not flat), the MAF sensor's bad.


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

How many miles?
Have you check the timing chain for stretch & wear?

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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA