W202 misfire

[piston broke]

W202 96my 2 litre
Sounds like running on 2 pots, extremely hard to start and keep running and only a day after passing MOT.
I'm guessing PMS module but gona try to start with HT leads and coil packs which seem 2b buried under inlet manifold are these as tricky to remove as it looks ?.
Also spark plug caps seem very hard to remove didn't want to force them in case I was missing a trick!
Any pointers greatly appreciated would love to keep it going for another year.

 

[piston broke]

Update diagnosed 1&4 not firing also cant see any way to remove coil packs without first removing inlet manifold ☹ however just behind thermostat housing is a component (engine mount ?) If this can be removed then access to coil packs under manifold might be possible!.

 

[neilrr]

Your PMS unit (found under the washer reservoir ) is broken.

What's the part number on your current PMS box?

W124 E200 with no ignition on cylinders 1 and 4 | Electronics and Audio

Need info on PMS ignition control unit MB#0185451032 bosch#0261200608. Car (W124 E200 with M111.940 engine) has dropped ignition on cylinders 1 and 4 and the coil is OK...swapped it over with the coil for 2 and 3 but fault remains with 1 and 4. Any advice, repair options or pictures of...

forums.mbclub.co.uk

 

[piston broke]

Your PMS unit (found under the washer reservoir ) is broken.

What's the part number on your current PMS box?

W124 E200 with no ignition on cylinders 1 and 4 | Electronics and Audio

Need info on PMS ignition control unit MB#0185451032 bosch#0261200608. Car (W124 E200 with M111.940 engine) has dropped ignition on cylinders 1 and 4 and the coil is OK...swapped it over with the coil for 2 and 3 but fault remains with 1 and 4. Any advice, repair options or pictures of...

forums.mbclub.co.uk

This one ?

 

[piston broke]

Just read a few pages of that thread you linked & I am now even more confused do I have to change both coil packs first ? and if that doesn't help then try pms after? .

 

[neilrr]

That's the one (post 4).

Change the coils before you put in a replacement PMS unit. The old one is dead, new coils will not revive it.

 

[piston broke]

That's the one (post 4).

Change the coils before you put in a replacement PMS unit. The old one is dead, new coils will not revive it.

Thanks for replies, gona have to bite the bullet I guess. E bay has lots but no returns scares me a bit.

 

[neilrr]

3 month guarantee - MERCEDES C CLASS ENGINE ECU A0185451132 | eBay

 

[piston broke]

That's the one (post 4).

Change the coils before you put in a replacement PMS unit. The old one is dead, new coils will not revive it.

Do you have correct replacement pms available?

 

[piston broke]

Do you have correct replacement pms available?

whoops sorry just saw the link

 

[neilrr]

No, I don't have any 018 545 11 32s.

That link is just one I found on ebay that offers a 3 mth warranty, I have nothing to do with the seller.

 

[Peetronas]

W202 96my 2 litre
Sounds like running on 2 pots, extremely hard to start and keep running and only a day after passing MOT.
I'm guessing PMS module but gona try to start with HT leads and coil packs which seem 2b buried under inlet manifold are these as tricky to remove as it looks ?.
Also spark plug caps seem very hard to remove didn't want to force them in case I was missing a trick!
Any pointers greatly appreciated would love to keep it going for another year.

W202 96my 2 litre
Sounds like running on 2 pots, extremely hard to start and keep running and only a day after passing MOT.
I'm guessing PMS module but gona try to start with HT leads and coil packs which seem 2b buried under inlet manifold are these as tricky to remove as it looks ?.
Also spark plug caps seem very hard to remove didn't want to force them in case I was missing a trick!
Any pointers greatly appreciated would love to keep it going for another year.

I’m sorry for the reply on your quote but I can’t make my own for some reason.
Have w202 c200 ‘95 LPG, when it’s cold has very hard to start (without touching the throttle a bit say to help to start it will crank forever) even same happens when it’s warm and sometimes start well but it’s like by surprise. The car drive so smoothly but when the rpm is over 1600-2000rpm, it can “kick” lightly in city traffic often when the rpm is low.
I will pop up two pictures below so it’s better to understand- the rpm is going up/down from ~250-~900rpm, it’s really so annoying.
Basically the car doesn’t run at all until get operating temperature like 60-70 degrees, if don’t rev it simply will shut off, just to be clear have to the mechanics and put new spark plugs.