theres an odd ticky/squeeky noise coming from under the hood. had it for a while. goes away when i get on the gas. just does it when idling...


idk if its the alternator, but something is making that noise.

 

if its your alt, the sound of your **** not cranking over in the morning eventually

i say get a tune up, if that dont fix it have em check your valves

otherwise, sure its not the infamous 4.0 timing chain rattle?

 

already at 25k miles?? idk..

 

AC compressor pulley?

or just a loose belt....

 

the compressor pulley might be it...

when i get under the truck, it seems to be coming from there, but its still hard to tell..

 

I think it has something to do with this.

https://www.ranger-forums.com/forum2...ad.php?t=83886


Two of my alts that I replaced made a squeaking sound. Well one of those was more of a squeal. I think I was told that that was the sound of the bearings going out or already out.

 

hmm ok

well, i guess its under warranty for a reason!

 

idler pulley?

 

I would check before you pulled it or anything. Just take the belt off and start spinning some pulleys.

If your trucks under warranty then yea just take it in and tell them to fix it. Screw doing the work your self. lol

 

i just had the same problem bro i found out that it was the idling pully its right next to the alt its like 25$ to fix

 

Didn't certain year Rangers/B's have a alternator recall or known issue?

I thought I read it here somewhere lately.

 

for what years?

 

i doubt its the timing chain rattle i just had mine replace and it only did it at 2500 rpms and up under acceleration i couldn't rev the engine to get it. Also its exactly what it sounds like a rattle not a ticking noise

 

Use the ancient Cherokee method of holding a wooden dowel against each accessory and putting your ear against the other end to isolate where the sound is coming. It's a poor man's stethoscope. Careful not to put the stick in the fan belt though.

 

+1 for idler pully. Alternators in my experience have the uncanny ability to just up and die with no warning...

 

okay well im almost sure its the ac compressor pulley

is this bad lol

 

Probably just your belt. If it's doing it at idle all the time and even while driving, thats what it is, cuz mine did that for like 8 months and I changed the belt today and it completely stopped.