i took my intake off today and noticed that there is an oily deposite in the throttle body... is that normal? i mean its not alot just if u run ur finger on it u get oil on it. Anything to clean the throttle body and Mass air flow sensor???

 

Maybe you are over oiling your filter.

 

then i would have noticed it in the intake tube... its only at the throttle body and continues into the intake manifold

 

Then its normal blow by coming from the PCV valve.

 

its probably from the EGR or PCV sytem. mine has the same thing. just a light oily film on the throttle body.

 

ok...i was hoping it was normal

 

Clean it with throttle body cleaner. Some throttle bodies has a teflon coating though and the cleaner can remove it.

 

what about cleaning the mass air flow sensor? what can i use to clean that?

 

they make a cleaner meant to clean the MAF. i think i got mine at advanced auto.

 

I used throttle body cleaner on everything. It worked fine for me. Use at your own risk though.

 

ok

 

There is a specific MAF spray cleaner. Don't touch the wires.. just spray them.

Now on the TB. I've always used a tooth brush and "throttle body cleaner". **Don't use** "carb cleaner. They are two different things!

Also, there is a clear coating on the TB plate and inside diameter. I cleaned mine with the proper spray and it still disolved this coating. I wound up having a flaky idle and the truck would drive on it's own at 20mph!

I fixed it by very carefully grinding down the stop pin until I had a 0.005" gap around the plate.

Just note.. that after you clean it, that if the idle and slow speed driving is different? The fix is easy.. PM if you need help.

Rich