E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

96 E320 Wouldnt Start, Replaced CPS, Started, CPS went out again

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Old Oct 19, 2014 | 02:24 PM
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E320 96
96 E320 Wouldnt Start, Replaced CPS, Started, CPS went out again

My car wouldnt crank, it would just turn over acting as if it wasnt getting gas or spark. So i checked the fuel supply line with the key position to "on" and verified that the fuel was indeed getting to the injectors. I had a mechanic come over and he found that the Crankshaft position sensor was bad. He changed it and the car fired right up.

On a sidenote, in the process of diagnosing the coils for the no start issue he found that a previous mechanic had tightened the coil cover on one of the air supply lines for my egr valve which i was planning on replacing because my cluster lcd read "engine electronics malfunction" which lead to be EGR valve.

After the mechanic installed the new cps i test drove it then parked it. I started the car again and was driving to the store, i made a turn and smashed the gas a little and i felt the engine jump up a little, the car took off smoothly with power then just died and wouldnt start showing the same symptoms of bad cps prior.


1) Can a clogged or blocked eg valve caused rough idle
2) can bad motor mounts cause damage to my cps or how it needs to work
3) can there be any other issues that would cause rough idle /vibration grinding feeling inside the car.


also please add any relevant information or testimony of how you went through same thing and how replacing engine mounts made a huge improvment.

I am getting mine fixed soon
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