om651

[ajlsl600]

some may find this useful..

https://www.motor-talk.de/forum/aktion/Attachment.html?attachmentId=757224

 

[Tony Dyson]

some may find this useful..

https://www.motor-talk.de/forum/aktion/Attachment.html?attachmentId=757224

What a find, priceless in the long term I'm absolutely certain of, well done that man

 

[ajlsl600]

i just bought the ml250 same eng .having had r230 still having w208 and w168 i have learnt to make myself familiar with the way they operate , cos its a case of when not if that understanding such things helps.

 

[Gazwould]

Funny thing is water pump is switched off on cold starts to aid warm up times , but it's still takes longer than any car I've owned with healthy thermostats .

 

[ajlsl600]

seems to run a little warmer as well.. and anything benz electrical seems to be built by the lowest bidder. so i am wondering if thats a b/ache. just looked utube seems straightforward enough so edited this.

 

[Wighty]

some may find this useful..

https://www.motor-talk.de/forum/aktion/Attachment.html?attachmentId=757224

Very interesting thanks buddy , if you find one for the om642 send it my way

 

[ajlsl600]

will look ,a little pre occupied collecting all i can find om651 and possible solutions to the electrical/electronic dramas associated with it

 

[Gazwould]

Any particular ones ?

 

[ajlsl600]

Any particular ones ?

not really . just like to be pre informed how things work/might not work and maybe how to get over any issues . i read with interest that DPF regen does not get all the soot out . and i am really interested in how to get over that if and when . maybe i can chuck it in the barby and wait for it to start changing color,well "cooked" ,let it cool and blow it out ? ever hopeful .. also looking at understanding how best to deal with inlet manifold flaps and avoiding associated costs . also stopping egr from seizing up and the costs that come with that . i dont mind a few gaskets and seals .i have seen egr valves run at over a grand on some machines as actuation motor gets shaxxxd when they seize and my experience is on a diesel,they will . i stand to be corrected ref benz

 

[Dean Fletcher]

Funny thing is water pump is switched off on cold starts to aid warm up times , but it's still takes longer than any car I've owned with healthy thermostats .

My om6521 usually takes around 11 minutes to warm up.

 

[Dean Fletcher]

Does any know if a dodgy air filter (partially blocked) would have any effect on the catalyst temperature? Reason I asked is I have been having issues with cat temp sensors code coming on here and there. Last week the car was serviced and the guy said the air filter was bad. Since then the car hasn't gone into limp mode nor has the code came back? Touch wood (tapping my head)

 

[ajlsl600]

http://www.stephensservice.com/bluetec-diesel-issuesproblems/

also interesting ref dpf ect. diesel tho not exactly the same motor i think same type of dpf intercooler flaps ect. seems real important to avoid short journeys.

 

[Dean Fletcher]

some may find this useful..

https://www.motor-talk.de/forum/aktion/Attachment.html?attachmentId=757224

Great read,

 

[Gazwould]

My om6521 usually takes around 11 minutes to warm up.

That's right , just slower than my other derv and another diesel in the family .

 

[Gazwould]

not really . just like to be pre informed how things work/might not work and maybe how to get over any issues . i read with interest that DPF regen does not get all the soot out . and i am really interested in how to get over that if and when . maybe i can chuck it in the barby and wait for it to start changing color,well "cooked" ,let it cool and blow it out ? ever hopeful .. also looking at understanding how best to deal with inlet manifold flaps and avoiding associated costs . also stopping egr from seizing up and the costs that come with that . i dont mind a few gaskets and seals .i have seen egr valves run at over a grand on some machines as actuation motor gets shaxxxd when they seize and my experience is on a diesel,they will . i stand to be corrected ref benz

You've got it pal , DPF BBQ and a blow through with an air line , champion .

 

[Dean Fletcher]

That's right , just slower than my other derv and another diesel in the family .

Sometimes I think my thermostat is buggered as now and then it goes up quick and drops back a little

 

[Gazwould]

Dropping back is an indication .

Nothing wrong with mine but had replaced just as water pump etc was replaced and drained down .

 

[ajlsl600]

Dropping back is an indication .

Nothing wrong with mine but had replaced just as water pump etc was replaced and drained down .

can i ask mileage at pump replacement and cost of parts.?

 

[Dean Fletcher]

Dropping back is an indication .

Nothing wrong with mine but had replaced just as water pump etc was replaced and drained down .

Indication into what do you think?
I have the water pump replaced last year as it started leaking. Grangemouth do waterpumps for about 120 pound I think.

 

[d215yq]

Dropping back is an indication .

Nothing wrong with mine but had replaced just as water pump etc was replaced and drained down .

Is that just on initial warm up though? I thought it was normal that as thermostat opened for first time then the temperature would drop down a little as the cold water mixes with the hot. Mine always goes straight up to 98 in about 2 or 3 minutes and then as the thermostat opens it drops down very quickly to 90ish. Has always done that since I put a brand new MB thermostat in and all my other mercs have done that... then slowly creeps up to running temp and maintains it there.