sirtokesalot Posted November 23, 2016 Share Posted November 23, 2016 (edited) so i have new tires i have installed the engine transmission driveshaft and rear diff from my old car witch did not make the vibration before the swap. can the cv axles cause a vibration as slower speeds that feels like a transmission chatter or light misfire? i know the transmission was solid and not slipping at all before the swap same with the engine it was not misfiring before the swap. its also not throwing any codes of any kind. if i do put the old cars axles in would it be smart to put them in opposite sides from what they were originally? its a 1998 outback limited with a 95 legacy l engine trans diff and driveshaft. the original transmission driveshaft and rear diff also made this same vibration around the same speed witch also leads me to believe its not transmission drive shaft or rear diff related. Edited November 23, 2016 by sirtokesalot Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted November 23, 2016 Share Posted November 23, 2016 try this, put the trans in Park or N, then, foot on brake, shift to D if you feel vibration when in D, 99% it's the axles. not uncommon for rebuilt or some new aftermarket axles to cause some vibration. usually reported at stopped at idle but, i gotta believe it 'could' also happen while driving...? Quote Link to comment Share on other sites More sharing options...
Fairtax4me Posted November 23, 2016 Share Posted November 23, 2016 Exactly what speed? Is it once per tire revolution? Or several times per tire revolution? Quote Link to comment Share on other sites More sharing options...
sirtokesalot Posted November 23, 2016 Author Share Posted November 23, 2016 its hard to determin id have to say more than every tire turn. i feel it at slow speeds around 10mph through 25mph and if i let off the gas the vibration stops if i push into the gas harder it stops as well. Quote Link to comment Share on other sites More sharing options...
CNY_Dave Posted November 23, 2016 Share Posted November 23, 2016 Exhaust hitting at certain engine torque positions? Bad trans mount? Bad or misadjusted top-center trans mount? (the little dogbone) Quote Link to comment Share on other sites More sharing options...
sirtokesalot Posted November 23, 2016 Author Share Posted November 23, 2016 Exhaust hitting at certain engine torque positions? Bad trans mount? Bad or misadjusted top-center trans mount? (the little dogbone) exhaust hitting might be possible it was at first and i bent the heat shield up to stop a rattle pretty sure its not touching but i suppose getting the exhaust down and pounding it up farther would not hurt. trans mount and cross member are from the other car witch did not do this before. i did not know that dog bone mount on top is supposed to be adjusted it seemed like it could only go on one way and i just bolted it on at the end of the engine swap in the position it rested in could this be my issue? Quote Link to comment Share on other sites More sharing options...
sirtokesalot Posted November 26, 2016 Author Share Posted November 26, 2016 today i noticed a slight thunk when it is in reverse i stuck my head under the car with the door open and held my foot on the brake and tapped the gas i could see the rear diff housing jump up and then set back down closer inspection says the rear diff bushings are bad can this cause my vibration? Quote Link to comment Share on other sites More sharing options...
Fairtax4me Posted November 26, 2016 Share Posted November 26, 2016 Possibly. It's not helping anything that's for sure. Quote Link to comment Share on other sites More sharing options...
CNY_Dave Posted November 28, 2016 Share Posted November 28, 2016 Time for window weld! Or whatever that goo is people put around the bad bushings. 1 Quote Link to comment Share on other sites More sharing options...
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