Hey all, just saw this wire/connector just hanging out by the IP. What is it and where does it go??

Thanks,
David

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1985 300D. 179,000 miles.

Probably connects to a temperature sensor in the block near the IP. Look for something screwed into the block with a pin that doesn't have anything attached to it.

Edit: Look in between glow plugs #1 and #2.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
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There is nothing between glow plugs 1 and 2. Hmmm, looking at this thing, it looks like it would connect to glow plug #2. Does anyone know if that's the case?

Thanks,
David

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1985 300D. 179,000 miles.

I just looked at my 85, and there are 2 brass looking fittings screwed into the block between the first and second GP, and between the second and third GP.
there is a temperature sensor screwed into these fittings. there is a wire connector connected to each one. one is the coolant temp and the other one is either to tell the blower motor not to turn on until the coolant reaches a certain temp. Or it is for the GP relay, to tell it how long to keep the plugs on.

Does your temp gauge work?

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

My temp. gauge does indeed work. I really only see the one sensor between GP 2 and 3. Could you possibly take a picture of this for me?

Thanks,
David

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1985 300D. 179,000 miles.

Granted!


There are two temp sensors. You are missing the first Temperature sensor (#83 on the diagram and is most forward to the front of the engine) is for the Control Unit (#80) for emissions control. The second unit is for the GP relay and temp gauge.







Hope this helps.




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1983 123.133 California
- GreaseCar Veg System

Thanks so much for the photos. Unfortunately for me, the whole thing is gone on my car. Here is a photo of my car. What part would I need for this and would it just be as simple as unscrewing what is there right now and screwing in the new one?

Also, how will not having this sensor affect my car?

Thanks,
David

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1985 300D. 179,000 miles.

Without it, your emissions control function will not be working. No real effect if your vacuum lines are sealed. So it will be to your advantage to delete the EGR, ARV and a related vacuum you were inquiring about earlier ( point of reference. http://www.peachparts.com/shopforum/showthread.php?t=271702)




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__________________
1983 123.133 California
- GreaseCar Veg System

It should be.

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1983 123.133 California
- GreaseCar Veg System

Is this the part?

http://catalog.peachparts.com/item.wws?sku=W0133-1631107&itempk=75919&mfr=Beru&weight=0.01

or the first one on this page...

http://www.**********.com/search/product.aspx?sid=zacamxe0ptliw2z4pimaptnp&makeid=800016@Mercedes&modelid=1193790@300DT&year=1985&cid=18@Electrical%20%26%20Vacuum&gid=4740@Temperature%20Sender%20Switch

Thanks,
David

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1985 300D. 179,000 miles.

... if that sensor is not there, it's likely your motor was changed at some point... does your tach work? the 85 picks up the rpm signal is a different location than the previous years... so I'd bet not.
if i'm right, you have an older motor in your car, and are just a tad lower in HP than you should have.

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My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

My tach doesn't work most of the time, but has kicked in a couple times. And.... there is no tach amp like on the older models.

I'm trying to figure this all out too.... it seems like maybe the engine was replaced at some point because there is a mileage discrepancy in some paper work I was just looking at. But.... how would the tach work sometimes if there is no older style tach amp.

I do have a pre-85 air cleaner housing, but I can say that was replaced by the last owner and I have the paperwork showing the moron that installed it.

Anyone have any tips on how I can figure out if the engine is indeed an 85???

David

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1985 300D. 179,000 miles.

Yep. i swapped a 1980 motor into a 1981. The 1980 motor didn't have the extra temp sensor. Ran fine though. I never worried about it.

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What Would Rudolph Do?
1975 300D, 1975 240D, 1985 300SD, 1997 300D, 2005 E320 , 2006 Toyota Prius

Not sure I'm following all the advice in this thread, but on an 85, there is an electronic component to the IP. Is this the wire for that electronic component in or on the IP itself and not the block?

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

I can see the wire going to the IP. This is for sure the one to the temp. sender between GP 1 and 2.

David

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1985 300D. 179,000 miles.