302 vibrations at 2000 rpm

The vibration may be something in the driveline. I once shed a balance weight on a rear drum. I'd never feel the vibration except at about 62-63mph on the freeway and then it would go away. Once I had the weight brazed back on, the problem went away.

Could be an out of balance tire/wheel, drivehshaft, sticking U-joint etc. crawl under, over and around it and see if anything is obviously loose or tweaked.

Shift points are up to you. Shift as high or low RPM as you want. You're going to need to correct that vibration tho..

Can't help ya here. E-bay always seems to have factory service CDs available.. Might help.

if, after youve checked the obvious things and it still persists, check the pinion nut. its a common problem where it backs off a bit and causes some vibration. when replacing, replace the pinion seal also! hope this helps ya...

everyone missed the point. He has an RPM vibration, NOT a speed specific vibe. It's something in the engine. I'd look closely at the fan, then the harmonic balancer, then the clutch disk. Will it do it at 2000 in neutral?? What about with the clutch pushed in?

Bob,

I had a engine vibration like that on a truck of mine and it ended up being a bad cooling fan clutch. If your ford has a clutch fan, see if it has any play/whobble in it.

Bob

Thanks Steve and Bob,

I'll check the fan and the clutch. I haven't tried revving it up in neutral yet. As I push the clutch in to shift at 2k it continues to vibrate as it idles down through 2, so I suspect it'll do it w/ the clutch in also.

I'm guessing this is not "normal" (they all gotta vibrate as some rpm, right?). I saw a bunch of posts from 302 F150s with vibrations at 65 mph and was guessing that the auto tranny might just shift before 2000 until high, and then they see it at 65 mph (happens to be

I'll let you know what I find out,

Thanks,

Bob

Hi Bob, If I grab the fan, I can move it out of the plane (away from vertical) about 20 degrees. That is, I can move the tip of the top blade back over an inch. I'm assuming that this is not normal? I think my ranger has a similar fan/clutch, I'll try to wiggle that one tonight. The movement seems to be between the shaft and the clutch? Hopefully this is it (I like it when the problems are on the outside of the engine).

Bob

Bob You need to park that puppy until you can change the fan clutch. That thing is about to come apart, and it won't be much fun.

Texas Parts Guy

I can't swear that is your vibration problem, but it is a start. The clutch style fans I have dealt with were on a old Chevy pu with a 350. I have seen

Bob