f450

[mack82]

hi i have a 99 f450 the ac doesnt work right as long as i am at a high rpm it works good but if i am at normal rpms it comes and goes all help will be appreciated

[jesilvas]

I would probably bet that the gap between the two AC clutches is too much now that they have worn down from years of use.
You remove little spacers between the two and you should be good.

[mack82]

thanks i will try tomorrow

[mack82]

thanks for the help i took spacer out and works fine looks like a new clutch will be needed soon mine is wore pretty bad

[jesilvas]

How many miles on it?
I've got 322k on mine right now and only one adjustment of the gap. Still works great.