W140 Mercedes s500 crankshaft position sensor change. Will it fix my 95 big body project Dr Dre

[@pasha.proton]

It is still the best S-Class ever

[@professorjamesmoriarty5191]

On an old Merc whenever you think it's a fuel issue, it's always ignition related.

[@drissios]

hi , i have buy a crank and camshaft sensors made in china in my W140 and replace them with original one , they worked fine no probleme

[@JuancarlosAlvarez-ov7eq]

Buenos días Joven una pregunta

[@saucydr6408]

I got the same car check the camshaft position sensor

[@AVC-Works]

My S420 start cold and warm good, but when it was warm and sat for 30 minutes it had problems to fire up

[@petescarport]

Change the crank position sensor. I bet that’s it

[@raycroal]

that is a shame, are you able to drive it and if so, how did it drive

[@MC-xf6gd]

What was wrong with it? I just picked up a 92 400se and she’s sounding rough and stalled on me. Brought it back home and left it running but just a bit shaky did t torn off on me and haven’t drove it. Any pointers on where to start?

[@petescarport]

Always start with basic. Change plugs and check wires. Clean down or change cap and rotor (this is a huge part of misfire issues) and lastly check fuel. Old fuel and clogged injectors or fuel filters can cause misfires or poor acceleration

[@MC-xf6gd]

@ thanks 🙏🏽

[@Adee4750]

I replaced all wires plugs and coil packs still throwing a misfire code any ideas on that

[@petescarport]

Have you done anything with fuel? Injectors or even just fuel filter and check pump?

[@kumaboyy.7443]

What code? Misfire in a specific cyl or random misfire? Whats long term fuel trim looking?

[@kumaboyy.7443]

On older Mbz wont set a ckp code unless it is currently failing, i had an intermittent stalling and no start, i got my ckp to fail with a star diagnostic tester on it, when it stalled the code set current.

[@Adee4750]

Cylinder # 3

[@kumaboyy.7443]

@@Adee4750compression is good in this cyl.? did you try swapping inj, with another cyl. to see if the mis fire moves to the other cyl? Or inj. pressure drop test?