I am not in a position to drop 2-3-4-5k on a xmsn so I will sell car as is for no money at all or attempt to fix but I need some expert opinions, guidance. One other thing - guy who did seal noted I had no metal shavings or burnt smell in transmission at filter but it was completly blocked with fibers from plates. My question for you guys is should I remove tranny and replace seal and bearings this time? Any way to diagnose a bad torque converter? tranny pump? I thought if the tranny pump was good then the car would drive, maybe get the tranny completly flushed out? I am inclined to think that the pressure is blowing out the seal, meaning pump is not able to freely pump fluid through tranny -or- bearing that was not replaced is causing the failure. I thought perhaps torque converter was faulty/or installed wrong or bearing was FUBAR and needed to be replaced.ĭuring test drive (tonight) car shifted from 1-2-3 fine but still had whinning sound and when I pulled into drive way seal was busted and fluid was rushing out. They will not let me post due to being a new member Prior to my test drive I was skeptical - I knew it was not right due to the sound but could not find anyone to diagnose the sound. They said check fluid, or maybe air in system, or maybe just need to drive it and see what happens. I was on another BMW forum asking and asking about this loud sound I was hearing, almost like a turbo but not quite. To backtrack - guy did not replace split needle bearing, instead he sanded as necessary to free it up. When I got car back from him I performed the refill procedure per Bentley manual and I used the Castrol brand that is compatible "Import Multi-Vehicle".Īfter filling tranny, I noticed a loud whining sound coming from engine, torque converter area - which was different from when I blew out seal but definetly a sound that was never in my car prior to front seal breakdown. During the replacement he noticed the split needle bearing was frozen to input shaft. Discovered front seal blew out so had someone replace seal for $300. About a month ago I was driving and heard a funny sound like a whining of a pump, pulled car over immediatly and had it towed. Here is rundown:Ģ001 525i with 207k miles. I am new here but I have very similar issue. In any case, removal of the trans, pulling the torque converter, and inspecting the front seal is necessary to make an accurate diagnosis. I have no actually experience with this happening in a BMW trans, but have seen it numerous times in other manufacturers units. The only time I have seen a sudden, total failure of a front seal is if the support bushing in the front pump breaks loose, walks forward on the torque converter neck, and causes the seal to rupture. Has anyone ever heard of this seal going bad before? Is it indicative of bigger transmission problems? The car has 155k miles, and has never had any transmission issues to date.Normally, a front transmission, or pump seal, starts to leak gradually and slowly gets worse. Looks like it is a front transmission seal that failed, and leaked all the fluid on to my garage floor. Then I went to pull the car out of the garage, and it wouldn't move. So I though the rear main seal was leaking on my car (03 525i, 5-Speed Auto), as there was a massive oil leak coming from between the engine and transmission, in the bell housing area.
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