81 300SD.

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

yep your good.. it is a 81 300sd. I probably post too much on here but my car is in alot better shape then when i bought it. All thanks to people i bug on the forum.

I also tested the fan clutch it was fine. I just put in a new one around 5k miles ago. Could it maybe be too much straight coolant and not enough water... i had a leak in my hose one day and kept filling it with coolant instead of the mix.

I wonder how much can be put down to variables such as sending units and the guage itself. Our 85 wagon now runs normally right between the 80 and 100 marks. Sometimes if leaning into it, the guage will climb to a couple needle widths below the 100 mark.

If I put on the heater it drops the guage down quickly to a needles width above the 80 mark. It stays there with the heater on for a couple minutes and then goes back to normal right in the middle. I consider that 90C obviously....but have shot the head with an infrared laser temp gun and the most I have seen with the engine running at idle is 74.5C and that is at the base of each injector. At that temp. gun reading.... the dash guage is saying it is 90. Which guage is correct ...the temp. gun or the dash guage?.... Don't know.... I always thought that these VDO guages had a good reputation for being accurate and maybe it is??. I guess I could try to find something to compare it to as a known accurate temp. This 85 wagon has two sending units in the head....I think the front one is for the guage and the back one is for?? My other diesel 617's only have one sending unit in the head.

We wired a toggle switch into the auxiliary fan and have removed the A/C condenser. That auxiliary fan switch was a waste of time according to my dash guage as it does nothing to lower temperatures when the aux fan is running.

I wonder if you have one of these temp. guns to check your temperature out for a comparison? They come in handy and are always going on sale for like $30...Princess auto. I think you guys to the south have a place called Harbour freight which sounds like an equivilent type store.Could be a cheap general diagnostic tool.

Excess coolant is bad news in several ways. Unless you really need additional freeze protection, 50% coolant is as much as you want.

did temp show started after your intervention?
how much of pure coolant did you add?
what is your level in jar now?
I assume that you can add easily distilled water to correct mixture..

btw,I have fixed vent so in my case 85runnin'/95idleC is expected

cheers
ChO

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w126 500SEC gen II euro, powered by OM617 turbo stolen from 84 300SD 2.88 diff,EGR blinded
next wish/project: w114 coupe OM603 powered

i think i added all together a whole gallon... the car never used to get warm like this until around this same time i saw my hose was leaking. Also this is with my AC on and it seems to kick my idle down a little. I am going to flush the system this weekend. ill see if it helps a little