tvarney26

metal on metal sound when accelerating usually going uphill btween 2000rpm and 3000rpm coming from engine bay sounds like a sticky lifter or valve or maybe a misfire on one of the cylinders jw if anyone has had this same problem and wat was it you had to fix

VTJeep

If it is a lifter, or rod knock, I think it would be different than a misfire. If theres a misfire it's gonna effect the performance of the jeep and cause some amount of power loss, or at least a slight hesitation of some kind. Could it be the flex plate is loose? Have you changed the oil or done and maintenance work recently?

tvarney26

yeah i just change the oil not too long ago with rotella 15w 40 and everything is fine till i jump down a gear uphill and then it starts to really tick when going from 1750rpm up to about 2500 then it shifts up and shuts up when it goes back down to about 1500rpm

cruiser54

ONLY under a load? Not valve train related.

Auto trans? Check the flexplate bolts first and foremost as already suggested.

tvarney26

i just put some seafoam in yesterday too to see if i could lossen up my lifters a bit but it has been hapening way before my oil change or seafoam

tvarney26

it ticks like any older 4.0 at idle but gets loudest at those rpms

tvarney26

auto trans

VTJeep

I hope it's that..

tvarney26

it also seems to be worse on hot days and doesn't happen when i start it up and go to work in the a.m.

tvarney26

i can push her through 1st and 2nd up to 3000 in a.m with no knock but in the afternoon after its been sittin in the sun all day it will tick goin uphill if i jump down a gear and try to push her through 2500-3000

tvarney26

idon't know if i should get new plugs cuz if i try to go in that higher gear up the hill instead of jumping down one it will die in rpms and allmost hesitate

tvarney26

could it be from my squeaking serpentine belt no getting the right power to the pulleys

VTJeep

Well. It sounds like theres a couple things to check. First, yeah, get the squealing to stop. Load test your alt and battery, if ya want, but also, the evap canister makes a tick noise and it seems like it might do it more after things have heated up.. Check your sensors like TPS, IAC, o2's.. A decent mechanic with a good diagnostics computer can tell you if theres something up with sensor voltage, compression..

cruiser54

https://www.cherokeeforum.com/f51/ho...ocking-125547/

srocks

Curious...