FLy Wheel, bump, thump, & Wiggle!!
I am about to pull out the shot gun and start blasting! I posted on this a couple of nights ago and got a couple of things to try and did all this and now what?
Here is a recap on the 1st post. When I start my Jeep to warm up it really vibrates (wiggle's as my Jeep Chick states). It only does this after the high speed idle has kicked in and running at 1500 RPM's. Once I have hit the gas and it goes to 1000 RPM's it stops. It also does this when driving in D1, D2, & Drive when it reaches 1500 RPM's or 30 to 35 miles per hour in Drive. I can also hear something bumping or thumping underneath the transmission hump in my Jeep. At 1st I thought this is a u joint but they seem tight. It has also made this noise once while in park and the front of the Jeep slightly down hill. I have been unable to recreate this in park when I could get underneath and look for it. It will not do it in 4WD. I think maybe the engine is out of balance cause be the fly wheel possible being out of spec somehow. Does this make any sense and how could I check. I am hoping for a way without pulling the transmission. I have a 1983 CJ7 with 258, TF 999, D300, D30 up front, and AMC 20 with 1 piece axles in it. We are getting snow right now and I sure would like to take the Jeep out tomorrow without worry about doing some serious damage. Any other idea's as to what I should check?