Craftysince86

So i'm noticing that sometimes my E doesn't want to crank over, i think it happens once the car warms up a little. if it doesn't kick over i just let it sit for a few minutes and she starts right up. when it doesn't start she just cranks and cranks

it doesn't always have this issue, and this issue did start last week. it's happened to me twice maybe. i have no check engine light, the battery is good i recently replaced it. i am in need of new plugs which i will be doing this week

does anyone have any idea what it could be? maybe starter?

thanks for any help

Plutoe

Do you hear click click click when the motor will not turn over?? Or are you saying the motor turns over it just does not start!!

Craftysince86

no clicking, i assume you are referring to clicking like a dead battery?

it just cranks normally but doesn't turn on.

Plutoe

You are correct I just wanted to make sure that the engine turned over and there was not a bad starter, and you confirmed that it is not a starter issue.

My guess is that it is the classic crank position sensor!! A cheap part but a PIA to put in!!

Craftysince86

is there anyway to verify that's what it is?

Plutoe

I agree with you, but the only way to safely test without diagnostic software is you have to remove the sensor and check the resistance. Then you have to put it back or a new one.

On the other hand, I just plug in and run a quick test then the guided test for the sensor. I don't have to waste time and money guessing.

morgandarius1

Does anyone have pictures of where the Crank Position Sensor is on a w211/ 2003 e320? I think I need to replace mine and do not know where to look on this car.

Craftysince86

I just changed mine fixed the issue immediately

Very simple instal with small hands lol

Follow the harness that goes down the back of the engine, it splits into two and one side goes to the cps you can see if with a flashlight.

Uses a 8 femal torx

morgandarius1

Thank you Craftysince 86, will go in on this in the morning.

Craftysince86

you can see the cps in the upper center portion of this picture

if you're doing this alone as i was, i zip tied the other half of the harness to the heater core hose? and the the black nylon one at the bottom of the picture to the steel braided line. was much easier not having to hold those out of the way while trying to get to the sensor.

you'll need an extension, the bolt is on the under side of the sensor, overall very easy to do

morgandarius1

I found everything exactly as you guys said. I have been driving the vehicle since yesterday the 8th and no issues. It would be much easier if I had to do it again but I did use a bit of foul language as I laid over top of the engine to get to the cps. Thanks again for all the help.