Hi Yesterday my car started and performed as usual. After 20min of driving I switched off the engine. Ater 5 min engine would not start. It was cranking over , but would not start. 30 mins later engine turned over and started.......... car is funtioning normal. Any idea as to what the problem could be.
Thanx

Faulty crank position sensor. Has it ever been changed?

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1989 300CE

Thanx
No it has not been changed ......I'll check it out....
Keep you posted!!
Regards
Faik

As a DIY GUY how difficult is it to replace this crank sensor and where is it located.!!!!!!!!!!
THANX

Would the crank sensor cause a CEL?
K40 relay? In the black box near the firewall under the hood on passenger side. Check the fuses on top of it, then unplug the 2-3 giant multi-connector plugs and replug (may cure an intermittent connection). It controls many functions, from starter to wipers, and it's essentially a bunch of relays in one expensive lump. Never have figured out why they chose to do it that way but i'm sure there is a reason.

Please keep us posted!

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