newbe mustang Q

check the hose going from the PCV valve to the plenum for hole(s) or cracks and did you get an oem Ford PCV valve? aftermarket ones do not work well on Fords.......

the wining could be the belt, could be your radio not grounded properly, OR when i removed my intake silencer it began to make a cool sucking/whining noise when accelerating

Mustang5L5 said:

Why are you running 93 octane?

The GT was made for 87 octane. It will make the most power with it. Running 93 is only wasting your money.


Does the whine sound like it comes from the transmission or shifter area?

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are you serious?????? i use 91, and afraid to use 87 cuz of knocking or power loss, but im guessing im wrong on this. is it really better to use 87? sorry for taking it off topic. i know it was designed to perform with 87, but mines got its miles on it and its had to be torn down before for head issues, i thought running 91 would compensate for some of the wear and tear.

4.6boy said:

its a motorcraft one it didnt come with the elbow so i am just using some hose also were would i find that elbow??

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that elbow could be the problem as they are prone to leaks, I'd get a whole new hose n' elbow from FoMoCo as it seems to-be a fairly common problem wth them cracking and leaking.....

4.6boy said:

i got a 02 gt and thre is oil around my pcv vavle i even replaced it wih a new one and it still is leaking is this normal its not a lot just some drops??

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Did you replace the rubber groumet around it? Mine was leaking from there. they do go bad after while

Mustang5L5 said:

Try a tank of 87 octane. If you get on it and expereince some detonation (pinging) then try for 89 octane and see if it does it there.

91 is just a waste of money. Our engines are low compression and do not have a power adder so there is no need for high octane.

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good to know moneys tight, and 3.40/gal. with 91 vs. 2.80/gal with 87 is gonna save me ALOT lol

4.6boy said:

its not the rear seal casue its dry by the rear seal its just a drop right after the trainy grossmenber

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then its the trans output shaft seal, could be the beginings of something major if left un-checked.....