crank sensor

[Unregistered]

I drove my '90 525 from DC to NY last night and everything was fine. After parking and trying to restart the car it wouldnt turn over. I had a mechanic take a quick look at it and he told me it was the crank sensor. Anyway I managed to find the part and it seems fairly easy to install however the positioning of it makes it difficult. Can anyone provide me with any information on replacing this part? Another thing I noticed is that on the plug end (the end on the right side of the engine if you were facing the car and between the engine and transmission) there are two plugs that feel identical. One in front of the other. The one that is closest to the front of the car leads to the crank sensor i believe, what is the other one for? on my car it is just a loose wire and it looks to have been cut or broken, can anyone tell me what this if for? I know this is fairly vague information but I honestly don't know too much about this stuff (still trying to learn) and I tried to describe it as well as I can right now. It's been a long day. If there is anything else that needs describing please let me know and I will try. Any information will be greatly appreciated im in a real bind right now as I am stuck in NY and need to be to work on Monday morning. It is very difficult to find a mechanic in NY on a sunday.

[winfred]

if it won't turn over it's not your crank sensor, if it turns over but no spark/fuel pump/injector pulse the crank sensor is a likely canadate, a quick test to see if the main relay is supplying power to the computer, with the key in run position the idel control valve will lightly hum (it's about a 4" long cylinder by the throttle body with a 3 wire plug) if you have spark and fuel pump but no injectors look at the plug about 1 foot below the throttle body, that's for the two temp sensors and the fuel injectors, it can corrode and do all kinds of fun things. if it just plane wont turn over try jumping the starter, a wire/screwdriver/pliers will do, jump from the 10mm nut to the 13mm nut on the starter solonoid and it will engauge and spin the motor, with the key on it will start this way if the ignition switch partially died and won't trigger the starter


I drove my '90 525 from DC to NY last night and everything was fine. After parking and trying to restart the car it wouldnt turn over. I had a mechanic take a quick look at it and he told me it was the crank sensor. Anyway I managed to find the part and it seems fairly easy to install however the positioning of it makes it difficult. Can anyone provide me with any information on replacing this part? Another thing I noticed is that on the plug end (the end on the right side of the engine if you were facing the car and between the engine and transmission) there are two plugs that feel identical. One in front of the other. The one that is closest to the front of the car leads to the crank sensor i believe, what is the other one for? on my car it is just a loose wire and it looks to have been cut or broken, can anyone tell me what this if for? I know this is fairly vague information but I honestly don't know too much about this stuff (still trying to learn) and I tried to describe it as well as I can right now. It's been a long day. If there is anything else that needs describing please let me know and I will try. Any information will be greatly appreciated im in a real bind right now as I am stuck in NY and need to be to work on Monday morning. It is very difficult to find a mechanic in NY on a sunday.

[Unregistered]

the mechanic ran a few quick tests on it too and the crank sensor is what he came up with. Im praying thats what it is.Does anybody know anything about the process for changing this?

[Unregistered]

is there anyone that can help me? i also apologize that I have not signed in, i am a member here but I can't remember my password for the life of me. Please if anyone can help im in a real dilemma here.

[ryan roopnarine]

im going to walmart to get some stuff to repair a tire...if nobody's chimed in by the time i get back then ill help you.


is there anyone that can help me? i also apologize that I have not signed in, i am a member here but I can't remember my password for the life of me. Please if anyone can help im in a real dilemma here.

[ryan roopnarine]

engine light come on when you tried to turn it over? if it is indeed turning over, like you said, it might have thrown a code into the computer that you can read and be assured that it is the CPS via the stomp test. autozone and discount autoparts aren't likely to have this part in stock, it usually takes a couple of days for them to get it, and its about 120. I think bma sells it for around 90 or so.

[Unregistered]

and i did the stomp test but i dont understand any of the codes. I already found the CPS its just a matter of installing it. It seems fairly easy but the plug end (with the prongs) is in a very awkward position. I need information on changing this part.thanks

[ryan roopnarine]

if you already have another CPS, i don't understand what your question is....just follow the wire back, squeeze the connector to release the wire clip, pull it out, and unbolt the CPS from the front of the engine....i don't have an m20 engine, and bentley doesn't provide pictures for it, so i don't know if there is a radiator hose blocking the allen screw to remove it. If it is helpful to you (AND YOU KNOW HOW TO BLEED THE COOLING SYSTEM), remove the hose to get access to it. if you don't know how to bleed it, DONT remove the hose, just try really hard to unscrew it how it is.

[Unregistered]

because the instructions you are giving dont sound like the piece I am referring too. Im not really sure how to describe it any better. I'll just have to figure something else out. I appreciate your help anyway though. By the way, a S700 v14? wtf!? i didn't even know this existed, what a friggin monster!

[ryan roopnarine]

1.....the car in my nameplate doesn't exist, its from the 1999 song entitled "bling bling" by bg, et al. I put it there to be facetious, bg put it in the song to emphasize how exclusive his "****" is. Soooo many of America's problems originated with that song... :p

the car i drive is a 1992 525i. i have the 24v m50. if we are talking about the crank position sensor here....it SHOULD be in the front of your engine just above a sprocket or belt. its about 3/4 inches long, cylindrical. there should be an allen bolt securing it. if the part that you have isn't in front of the engine, it is not the CPS. ill see if i can scare up a pic of it.

[ryan roopnarine]

ok.....you m20 folk are a bunch of wankers, you are :D no one could have told me that bruno already made a relevant picture.....

http://www.bmwe34.net/e34main/Maintenance/Engine/Data/Timing6Big.jpg

this is from an m20 like you have, if what you refer to does not match the picture, then we are not talking about the cps.

[Unregistered]

but its where the other end connects that im worried about. It has a plug with two or three prongs (the part is in the car). I can feel where the plug is but i cant really get to it due to its positioning. im thinking i can unplug it but im not sure if i will be able to find the placement for the new plug. Is there a particular process for changing this part?

thats hilarious about the benz i agree with you and now that you mention it i remember the verse.Too bad, it would be a monster if it existed