Well tonight on my way home i hear this high pitched wine, dont think anything of it so i turn my radio up, well im doin about 65 and its hella loud cus i can here it over the radio, so i glance down at the dash and notice the 4x4 low light is on. So i slamed on the brakes in the middle of the highway and turned it back to 2hi.

The question is did i screw anything up of did i catch it in time, i only ran in for low at 50-65 for about 1/2 mile. I really hope not.

 

I remember reading this a few days ago. It may help...

https://www.f150online.com/forums/sh...hreadid=167206

 

The difference in the other thread is his 4x4 was actually engaged! Sounds like this guy's was!! D'oh! I'd say you prolly caused some pre-mature wear and tear, and it *MIGHT* hurt you down the line. Everything function OK now? If yes, don't worry about it. Oh, and buy an ESP pronto if you plan on keeping the truck for a while...

 

You can't go 65 MPH in 4 low.

 

Actually, you might be able to run 65 MPH in 4 Low - at about 13,000 RPM! If you managed that, your rods are probably connected to something other than the pistons and crank. Yes, if you did manage to run 65 MPH in 4 Low, you probably messed something up.

 

I was accelorating at the time this happenend, and when i noticed the 4low light on the cluster i was doing about 58mph, so yes you can at least go this fast in 4lo, cus i didit

dzervit
What is an ESP?

 

Extended Service Protection. IE, a longer warrenty. You can go up to 7 years and 100,000 miles. If you did some damage that won't show up until later down the road, your covered!

http://www.fordwarrantys.com/

 

Dood...it may have had the light on saying 4 lo, but believe me...you didn't go 60 in 4 lo..the engine won't turn that fast....You'd have to turn something like 9,000 RPMs and the rev limiter won't let it turn that fast. I suspect you had a fault in the indicator circuit.

 

well all i no man is the whine was hella loud, and im not lieing about my speed, so mabey my 4x4 low isnt regearing the trany, like its supposed to.

But i used 4low tonight to climb a pretty steep loose rock hill and it did just fine. So who knows.

 

What's the best deal on ESPs? Wasn't there someone on this board that sold them at a good price? I'm just about to 1yr ownership and should buy now if I'm gonna...
Thanks.

 

See my post above. To my knowledge, that's as good as it gets. An actual Ford ESP (not a 3rd party).