PLZ HELP!!!! somethings wrong
 

need info help plz, when I was driving yesterday the car started to slow down and made a grinding noise maybe from the engine or transmission not to sure happened twice like a loud grinding noise slowing down the car rappidly like it was seizing up or something. Thought maybe it was the coolant lvl not sure so i topped it off and drove him with out this occuring again. what could it be????? 2001 bmw x5 4.4i

Where your gauges showing any abnormal readings.

nope

No codes or warning lights?

Grinding is bad! Does it have to do with brake application? Something in the drive line: transmission, differentials, or transfer case is failing. Get to a mechanic quickly.

didnt sound like it was comming from the brake lines or that area sounded like the engine or something in the front compartment.. could it be that it was low on coolant? cuz my wife did tell me the check coolant lvl light came on earlier this week and after filled it up didnt have the problem again driving home

Any unusual fluctuations in engine rpm? Could be the brakes, since when I think grinding noise I think ABS.

yea actually could be the abs.. it was dropping real fast the rpm and speed.. not sure...

I Dont Think Its Coolant...

most probably transmission, transfer case...so pity...

I had similar problem 2 weeks ago (not sure if the same), loud grinding almost like screeching noise comming from the driver side engine compartment. The vehicle would seize up during start or stall while driving. Dealership diagnosed problem as bad alternator/generator, it was replaced along w/ v pulleys and running good since.

Its the ABS sensor, you might wanna change it ASAP, because its gonna happen again. You can disconnect it if its happening constantly... untill you get to the nearest bmw dealership.

My friend your problem sounds like you have pressed the HDC switch by mistake, I have had a similar problem and found that I had the switch pressed.

I agree with fernor, i have also done this in the past and it can be quiet scary if you don't know whats going on. Turn your hill decent control on and see if this replicates your simptoms.

I had the same be4 :confused:

Drive with your windows down and try to locate where the noise is coming from.
I have the same year and model.
Mine was making a grinding and rattling when in gear with the brake applied.(red light) I ignored it for a day and the tranny went.
Get it to a dealer if under warranty or a good qualified independant if out of warranty.

My non dealer mechanic charged me 5200CND for a replacement with 2 year guarantee