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Post by iamfranz on Apr 13, 2009 9:25:49 GMT -5
Ok, here goes nothing. I've got a 04 X, 4.0. It's got a 4 inch lift and running 33x12.50's on a 15 inch wheel. I am wondering if I move up to a 17 in wheel, can this help with the bump steer. I have already installed adjustable cams, heavy duty steering stabilizer, and have both shortened and double knuckled my drive shaft.
A couple other things,I put in 4.56's in the gears both front and back with a limited slip, still did nothing for fuel mileage, but it did fix the speedometer problem. Also seems like at times the jeep runs better than other times. Almost as if the torque converter isn't doing it's job, or like it is hauling a heavy load up hill. anything anyone can advise would be greatly appreciated.
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Post by rccolacc on Apr 13, 2009 18:02:35 GMT -5
I don't think your wheel size is going to make any difference on the bump steer. Bump steer has more to do with your steering geometry than anything else. Have you gotten an alignment after you did the lift? Did the lift have any brackets for the trackbar, or a drop pitman arm?
How many miles are on your Jeep? How long have you had it?
Welcome to the website by the way. Where are you located?
-RC
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Post by broncocraigellis on Apr 13, 2009 20:51:09 GMT -5
Bump steer is usually a track bar not in alignment with the drag link. The two should be as close to being on the same plane as possible to avoid bump steer. The 17s will make it corner better.
The transmission problem could be as simple as not pushing down on the accelerator when under a load to make it downshift into third gear. I have the same transmission in my 03, and it is hesitant to drop down. Could you be more specific about under what conditions the problem occurs?
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Post by iamfranz on Apr 14, 2009 10:08:44 GMT -5
Well first, yes I've had in fact several alignments since the lift. it's been two years going on 3 now. Yes the lift came with all brackets and the drop pitman, there are approx. 55,000 + miles on the jeep and I have had it since 05. I live in Bakersfield ca.
As for the tranny issue, not sure it's sticking in 3rd gear but it definitely sticks somewhere between 3rd thru 5th, it's an automatic by the way. Sometimes the needle gets to 4,000 rps and so close to the red that I pump the throttle to force the shift. And the engine noise is loud compared to normal driving. As if the engine will not warm up. Sometimes I can drive it like that all day and it wont be smooth or quiet, other days it runs great. I don't get it unless perhaps I bought a lemon. This is the second jeep I've owned, the first was a 93 2.5 stick shift that I lifted and ran 31's on. Drove it like that for years and the only problem I ever had was poor gas economy.
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Post by broncocraigellis on Apr 18, 2009 21:35:43 GMT -5
The 03-06 Wrangler had a 4 speed automatic. Under what driving conditions does the transmission do this? Going up hills? On flat ground?
You should be able to turn the key on-off, on-off, on and the codes the Jeep is throwing will show up on your odometer. They will be PXXXX with 4 numbers following the P. Google the codes that show up and that may help solve the transmission problem. I know some auto.s from 03 and 04 had front pump and torque convertor problems. Yours could be one.
For the bump steer, you need to check everything associated with the front axle: tie rod ends, control arm bushings, control arm brackets, track bar bushings...also make sure the drag link and track bar are close to parallel. If not, make them parallel. Check all suspension and steering bolts to make sure they are tight. Check all bolt holes in the thin brackets for any elongation of the bolt hole.
You'll eventually find it that way.
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