attempting to clean my MAF

[gooal22]

i went to the store and purchased a T-20 torx screwdriver. when i went to remove the MAF, the torx screws have a small little "thing" in the middle which didn't allow me to take it off.

my question is, did i purchase the wrong torx screwdriver?

sorry for the generic terms.

PaT

 

[Positive Vibes]

Heheheh. I know what your talking about. I did the same thing. You can buy one from Ford or just drill a hole in the driver.

 

[Blake D]

you can buy the correct ones from an auto place they are security torx bits. I got mine from O'riley They can still be uesd as a standard torx too.

 

[EBInterceptor]

Napa also carries them, that's where I got mine. Just asked for tamper-proof torx bits and found them right away, and only for about $2

 

[Bashman]

You can also just get a screwdriver and snap the little thingy off and use the standard torx tip.

 

[EBInterceptor]

On my new X, they plugged the holes of the screws, so I used needle nose pliers. Cheap solution too if you don't want to buy the bits.

 

[gooal22]

thanks for the help, ill let ya know how it turns out tomorrow. thanks again.

 

[gooal22]

so......it didn't work

i did everything exactly how it was supposed to be done. is there a possibility that i have a bad MAF or could there be something else. i have a 91 eddie b. with 115,000.

thanks.

 

[Positive Vibes]

It didn't work????

Not sure what your problem is? Truck wont run? Have CEL on? What exactly is the problem??

 

[Rhett]

You never said what problems your truck was having in the first place. If it has rough idle and stumbling acceleration, it could be a dirty MAF, but it could also be
a vacuum leak, worn out spark plugs, bad gas, worn plug wires, dirty injectors, bad PCM, among other things.

 

[TheRookie]

or bad iac. strange thing is my 91 has phillips screws holding the MAF. Thats how it was when I got it.

 

[gooal22]

Lacks power/hesitation when i am driving at higher speeds(normally over 50) or at wide open throttle.

it also has a ping/knock when at wide open throttle.

the truck has a slight rough idle. it never soudns like it is goin to die, but it does sound like it skips a beat here and there.

 

[Bashman]

Sounds like the notorious lower intake manifold vacuum leak. I would try re-torquing the bolts. You might end up having to replace the gasket. Do a search, there's tons of threads on how to do it.

 

[gooal22]

well i did a search, and looked around and found some info on the lower intake manifold, but i couldn't find anything on how to fix it.

 

[Bashman]

Try re-torquing the lower intake bolts, there's a sequence to it and the easiest way to get the sequence is to purchase a manual (Haynes, Chilton etc) if you don't already have one. Some members here have reached them all with a swivel socket and didn't have to remove the upper intake while others have had to remove it. Just remember to reset the computer after re-torquing.

 

[Rhett]

I'd recommend you re-torque the lower intake manifold bolts as well...it's easy and worth it before you go out and spend $$$ on O2 sensors, new wires and plugs, or other things.

On my truck I HAVE to remove the upper intake manifold to reach the lower intake manifold bolts. I have lots of swivels too.

I think since your 91 has no EGR, it will be easier to get down there. If not, it's pretty easy to remove the upper intake; there's just a few hoses and such to undo.