Squeak at Shift

[M1GarandGuy]

When I accelerate hard my Lightning makes a squeak at the shift. I changed the supercharger belt and it still squeaks. What's up? :shrug::cuss:

 

[gofastl]

Could be the accessory belt that squeaking when shifting.

 

[mcarbine]

if I remember right mine use to do that at WOT when it was stock. Now with the valve body, exhaust, KB, and slew of other mods I dont hear it but it could very well still be there. I know I have heard of other guys with the same problem and I think its belt related. Do you have an aftermarket idler setup??

 

[SID297]

Could be the accessory belt that squeaking when shifting.

That's probably it. An aux idler setup will help with that. You should check your belts too. A lot of slip can cause them to glaze over and not grip as well.

 

[blownsvtlightning]

not sure if they are the same size pulley, but the crown vic police cars had a one way clutch on their alternator pullies to prevent that...

 

[S P E E D]

I have the same problem occasionally under WOT. Looking at the idler pulley it looks glazed over. Think it's time for some new idler pulley and tensioner.

 

[2003svtf150]

I had a 2000 f150 which did that. It didn't stop until I raised the rev limiter with a hypertec programmer. Seems to happen when the motor hits the rev limit while its shifting. My Lightning stopped doing it once it was tuned.

 

[M1GarandGuy]

The Lightning is stock. How do I change the second belt? Looks like a real pain.

 

[Robert Francis]

If it's a stock Lightning, as I recall you'll have to remove the belt "cage" on the crankshaft to get at the belt. Not a difficult job.

 

[M1GarandGuy]

Thanks, guys.