acdcrockme Posted January 14, 2017 Share Posted January 14, 2017 I just bought a 99 b4 with 92k and have a couple issues with it when i let off the gas at high rpm the car shakes and makes a thudding noise in the rear my brother said u joint and i read that the u joint is non serviceable so if that is my problem are the usdm 5mt driveshafts the same as jdm? Also the starter is going and same question as before are the usdm and jdm the same? And finally the car idles rough could that be because im on 94 octane with no tune? Link to comment Share on other sites More sharing options...
RumbleRumble Posted January 14, 2017 Share Posted January 14, 2017 Take the neutral safety switch out and see if it's rounded. If not it's probably the rear diff carrier bushings that are shot. Link to comment Share on other sites More sharing options...
acdcrockme Posted January 14, 2017 Author Share Posted January 14, 2017 A nuetral safety switch in a manual? Link to comment Share on other sites More sharing options...
RumbleRumble Posted January 14, 2017 Share Posted January 14, 2017 Yup here a picture http://legacygt.com/forums/showthread.php/p1507-codei-259207.html there is a brake light switch and the neutral switch on the Driver side (US) of the trans, they connect by where the O2 sensor connect in the engine bay The little ball on the end that depresses gets squared off and notched over time. Link to comment Share on other sites More sharing options...
acdcrockme Posted January 16, 2017 Author Share Posted January 16, 2017 Its not that the starter is not working its that the starter wont turn the engine over like its not catching. Link to comment Share on other sites More sharing options...
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