I just bought a 1990 Wrangler with a 4.2L and a 3spd auto I have got the engine running a lot better due to everyone's helpful knowledge here so here is the issue
my jeep had started making a loud pop here and there that felt like it was right under me I thought maybe a ujoint was going bad but later on the popping started getting worst and worst till it would pop several times in a row only when I was accelerating forward I then headed home by the time I got to my road the popping was almost constant before I reached my driveway the jeep made a horrible utter death grinding noise and lost forward power I then placed it in park the grinding stopped put it in gear went forward with the normal popping ten again sheer death grinding no power to wheels so I pushed it to its spot and looked underneath nothing looked out of place so I really need help here guys
Could be any number of things but my first wild guess is the transfer case chain.
get it up on jack stands and start turning the wheels and try to find the source. You might need to disconnect the drive shafts but start with it all together.
I did you what you said and everything sounded fine my neighbor told me to put it in drive hold the break and gas it I did and both back tires spun with no popping or grinding this is really strange
His name is Luuca...
Also check your motor mounts. Mine sounded similar. Almost like someone was hitting the bottom of the tub with a hammer, *sounded* like the transfer case area, and only under a load.
Sounds to me like you have a bent or cracked flex plate.
A cracked flex plate will cause the popping sound until the crack gets large enough to separate and then it will cause the grinding sound. It will only do it under load. Tires up in the air isn't enough load to cause the stress fracture to be an issue.
Sounds to me like you have a bent or cracked flex plate.
A cracked flex plate will cause the popping sound until the crack gets large enough to separate and then it will cause the grinding sound. It will only do it under load. Tires up in the air isn't enough load to cause the stress fracture to be an issue.
The flexplate takes the place of the flywheel on automatic transmission vehicles. It bolts to the end of the crankshaft and attaches to the torque converter. There is also a large gear attached, used by the starter to crank the engine.
old transfer case makes a smacking sound when I move the drive shaft back and forth I guess thats the chain in their I just cant get the dang transfer case off got all the bolts unhooked its just stuck even tried kicking it as hard as I can and bashing it with a sledge hammer with all my force and it wont budge
just an update on the jeep.... it works lol the old transfer case was the issue the whole time I'm guessing the chain was the issue but new transfer case in and a good test proves to me that 2wd and 4wd are in working order
cool. That sounded like you had the exact same problem as me. I went through the rubicon and dusey before it got so bad. The atlas in there now won't have the same issue in the future and there is one less clunk to worry about.
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