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1997 528i Loud engine/transmission noise with video
1997 528i Loud engine/transmission noise
Hello, I did some tests on a BMW I was looking to buy. Compression tested all cylinders, 160 +/- 10 lbs on six.
The owner took me for a drive in it, transmission wouldn't shift automatically (abs and asc lights were on, so probably an ABS sensor). Whenever he shifted, if he pushed on the gas it sounded like the driveshaft was banging underneath the center console, but if he lifted his foot off the gas for a second then stepped on it it accelerated like normal.
Either the engine or the transmission make a god-awful noise, and I'm not sure which one it's coming from. The noise will disappear for a second, but if the engine idles-down, it gets loud. Here's the codes that the car gave off:
First, how did you get the codes to read out on your iphone? That is awesome!
I watched the video, and that sounds god awful. What is your plan for this car? Are you prepared to put in a lot of time and money to get it running properly? The O2 sensors being bad will cause the car to run poorly as the DME cant properly correct the air/fuel ratio so it just guess. Fixing that will help. However it sounds like something is banging around inside. Could be anything from a bad Vanos, to a bent valve or something more serious.
I dont know what your plan is for this car, but I personally would walk away. This is going to need some serious work. Unless you want to do an engine swap and a manual tranny swap and you just want this shell, then this car is not worth it.
Heres some info about the torque convertor code:
SI B 24 08 00 FC 48 "Solenoid Valve Converter Lock-up Clutch" Stored in the TCM/EGS for all E39 528iA/iAT with 5L40E (GM5) states to check the transmission fluid level and condition. If the transmission fluid and level is OK, replace the solenoid valve for the converter lock-up clutch (TCC solenoid).If the condition of the fluid isn't up to par,a solenoid wouldn't fix worn gears.Since you have taken care of your vehicle and you stated that there are NO abnormal shift characteristics,replace the (P/N 24 32 7 504 743) TCC solenoid (TCC pressure regulator).If there are other faults such as speed monitoring,don't waste your money (approx. $300.00 or more) for the solenoid and the oil.
If you have the GM4 (THMR1) transmission like you say you do.You need to locate the Identification plate anyways to get the SERIAL NUMBER of the transmission so write down all the information on the label to verify the model of your transmission.If the Serial Number is 5215898 or LOWER, install the TCC kit p/n
24 27 1 423 311. IF HIGHER,the torque converter needs to be replaced.Before all these repairs can be made,an important test needs to be performed in order to repair the problem correctly without spending a lot of money.If the fluid quality is okay,you need to ACTIVATE the TCC Solenoid and check its ON/OFF operation.You will be able to hear a clicking sound if it works and continue with the steps outlined above.
If the solenoid doesn't click when activated ON/OFF,you only need to replace the TCC Solenoid with P/N 24 33 1 218 916
I went back there last night, I've concluded that it's flexplate problem. He revved it up, and at any RPM above 1000 the noise is basically gone. The engine sounds perfect, nice and quiet. I think the momentum is enough to keep the flexplate from wobbling around. Either loose bolts or it's broken, we'll see. I'm going to go there in a few minutes and throw an offer out for the car. It has 186k miles, body and interior are very nice. I'll post updates when I find things out
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