I have a 1990 535i and the clutch peddle does not come all the way back up when after I let off the peddle. What would make this problem happen and what can I do to fix it?

If you have to pull the clutch back then you need to check ;::: first of all is it fluid (master cylinder) hydr, clutch ?? reply

If you have driven 26,000 without a problem I doubt it's related to the clutch replacement, but I think we need more info here.
Does the car make the noise multiple times during one trip (on and off as you start and stop)?
Can you hear it when you are parked in your driveway? The best thing to do would be to get out of the car when you hear the noise, pop the hood, and try to locate which part of the engine it is coming from. Then we can move on from there.

Probably bad clutch master cylinder and/or slave cylinder. I always replace both.

Just follow the procedure in the right order. Fill the clutch reservoir on the master cylinder to the max and leave the lid loose. Fit a transparent plastic pipe on the bleed nipple on the clutch slave cylinder bleed nipple. Put the other end of the pipe into a jar to catch the waste fluid. Put some thick grease around the base threads of the bleed nipple, this stops air being sucked in via the threads whne the nipple is slackened off. Loosen the bleed nipple by 1/3 of a turn. Have your mate slowly depress the clutch peddle. When he has reached maximum travel have him hold it there while you turn the bleed nipple a third turn back to tight. Have your mate release the clutch peddle, clutch fluid from the master reservoir should now fill the the master cylinder. Have you mate press the peddle a quarter way and then release the bleed nipple a 1/3 of a turn. Have your mate depress the clutch peddle all the way to maximum travel. Again tighten off the bleed nipple before releasing the clutch peddle. Keep doing this process until no more air bubbles can be seen in the fluid in the pipe attached to the bled nipple. Every four cycles or so check on the fluid level in the master reservoir and keep topped up with fresh fluid. When everything completed tighten the bleed nipple, it is not necessary to tighten the hell out of it as at some point you may need to do this again. Wipe everything down pump the clutch peddle a few times to be sure of correct operation and no leaks.

Yup....You nailed it! Time for a clutch!!!

After disconnecting the cable from the engine compartment remove the lower panel on the driver side. Press clutch peddle to floor then reach around the steering wheel column on the gas peddle side. you will feel a plastic guard. reach under guard you will feel the cable on top of clutch peddle. pull cable up and toward back of car.

Check the floor by the clutch peddle if it is wet (you may need to look at the very top of the peddle)than you problem is the clutch mastercylinder

check your slave cylinder for fluid

You might have a broken cable or the clutch pedal is broken at the top.Unless it a hydraulic clutch and the fluid level is low.

That sounds like it could be... I'm assuming the bearing slipped off of the fork, and that would give you this condition, see if you can look in through the rubber boot at the fork to see this.