Please Help!!!! I'm sure this is out there some where but I have searched and searched and no luck. I have a 98 tj 4"Unknown lift 1' coil spacer in front, and stock control arms.
new built 8.8 with teraflex sye and cv shaft in rear. gears are new 4.10s.
The problem is when I accelerate only from a slow roll like 5 or 10mph I get a rattling popping noise, like if you ran your knuckles across a sheet of bumpy metal or dropped a marble in a plastic bowl and it bounced. it sounds like its under me. "I think its the same noise" i hear while its in drive at a stop, only once in a blue moon but its not as loud. doesn't do it at cruising speeds. I can baby it and it does make the noise. I can also step on it like pedal to the floor and it wont make the noise. it only does it like a mild take off.
I replace the tranny mnt about a year go still looks good. the motor mnts look good also.
my first thought was my front d/s so I pulled it out and drove it. the noise is still their. also my sway bar links are new and tight. my exhaust feels tight no metal to metal. I wouldn't think my control arms would make this noise. would it? I feel like I have checked everything.
I do have slight play in my front axle u-joints but very little any possibility? Please help.
One of my control arms would pop and drove me crazy for months because I couldn't figure out where it was coming from. Would only make noise at low speed, when shifting from reverse and into drive. It was only a single pop though. Nothing was loose enough where it could move by hand. But I did have one bolt that was not torqued enough. I went ahead and checked them all. Not sure if this is your problem but it sure took me a while to figure it out
Wondering if it at low rpm when the engine is lugging? Like if you were trying to move from a stop uphill like a steep driveway? Could it be your engine making a dieseling noise kind of like pre-detination? I've read plenty of jeep engines make this noise, especially when the engine is lugged.
so after replacing my axle u-joints yesterday i took it for a drive and guess what the noise was still there. so for about 2 hours i search the whole jeep again and I FOUND it , It is my transfer case shifter linkage where it goes into the bracket that bolts to the driver side floor. the rubber part had dry rotted and vanished.