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2008 PT, 1998 neon--1965 VW 1200
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2,533 Posts
Discussion Starter #1
These were just taken, the car is amazingly nice inside(look at the rear floor pic, you could eat off of it) but the dash and exteriordidnt fare as well-- its the hallmark of geriatric car care, they dont hot-rod or tear them up any way other than never washing/waxing them or using UV protectant on the dash/seals-- its a shame, hes pristine otherwise!

let me know what you think! i took so many images of the cluster so youall could tell me if these temperatures were correct. one is just the top speed ill let myself go-- all were with the air conditioning running.

[:)]
 

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81' 300SD, 82' 300D
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4,021 Posts
Looks like you need to go fill up and get some fuel, you were nearly on empty in most of those photos![:0]
 

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2008 PT, 1998 neon--1965 VW 1200
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2,533 Posts
Discussion Starter #4
lol no-- the sender is broken! anyone have one on a parts car? ive got a couple cans of ether to clean it with! cheap is the keyword;)
 

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1982 300D Turbo
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457 Posts
Easy there, the last pic on the first post, the engine temp is so high!!!![:O][:O][:O] But nice car
 

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2008 PT, 1998 neon--1965 VW 1200
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2,533 Posts
Discussion Starter #7
i thought the same thing, but everyone kept saying it was alright. that is 75mph at about 80 degrees with the air conditioning running.

i was on the interstate

should i get a new cap and thermostat and see if those are it?
 

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1990 300SE, 1983 300D
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1,201 Posts
iNeon, your temp is fine. All Benzes run at about 80. A little over, a little under. You have nothing to worry about. And I give you credit for getting a 240 almost up to 90. The 76 240 my dad had (the body before 123) only went 78 topped out. [:I]
 

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2008 PT, 1998 neon--1965 VW 1200
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2,533 Posts
Discussion Starter #10
80 was the outside temperature. the car got to about 220 i think(?)

so whats the deal, is that correct or not? i cant seem to get any straight answers. people tell me its fine as long as it isnt boiling, others say it shouldnt get above x degrees.
 

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Premium Member
W-1-2-3 Go!
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16,161 Posts
I made some calculations:

The = signs denote the thick temp gauge marks, while the - signs denote the thin temp gauge marks. The 100 and 60 degree values have no technical basis but rely more on what others have mentioned.

Here are my temp gauge marks in degrees Celsius

=120
-100
=80
-60
=40

Here are your temp gauge marks in degrees Fahrenheit. Similar proportions I believe:

=250
-212
=175
-140
=100

According to the equation F=32+(9/5)C:

C = F
120 = 248
100 = 212
80 = 176
60 = 140
40 = 104

My calculations indicate that the corresponding temp gauge marks of your car are the same as that in mine. So "normal" engine temp should be 80 deg C on my car, or 176 deg F on yours. Mine used to go as high as 100 deg C when the thermostat was broken, but when I fixed it didn't go all the way anymore. More like 90ish. Yours is going above 100 deg C, north of 212 deg F based on my calculations. I would suggest you change your thermostat if you haven't. I thought mine was fine, but when I dove in to change it, I found out it was broken! If your radiator isn't losing coolant via the overflow hose, don't change the radiator cap.

I hope this clears it up. You have a very nice 240D. Your interior is as you claim it to be! Keep it up! Be careful when driving and taking shots. [8D] Oh, and I see you haven't figured out what to put between those two instrument cluster knobs!
 

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1991 300 SE
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18,534 Posts
Karugs is right about the calculations – if it’s getting to 220 degrees F that’s too hot.
Note also that your oil pressure reads in PSI, not bars.
 

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2008 PT, 1998 neon--1965 VW 1200
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2,533 Posts
Discussion Starter #13
we should get karugs a blue leotard with a star logo on the chest, hes always so helpful.

ill mosey on down to the parts store and get a thermostat!
 

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Premium Member
W-1-2-3 Go!
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16,161 Posts
LOL[:D]

I hope the thermostat does it. Goodluck! Remember to put it back the correct way!

If you haven't drained/flushed your coolant, now's a good time too! If you can't see the drain plug, it's on the driverside, just below the radiator. A quarter would come in handy [:p]
 

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2008 PT, 1998 neon--1965 VW 1200
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2,533 Posts
Discussion Starter #15
i just noticed in these pictures, the hubcaps are percedtly lined up on both sides!

how great is that?!
 

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500 Posts
I would say it is running too hot in the 2nd temp photo, getting close to the red. I doubt it is the radiator cap unless you're loosing coolant, and even then it could be because of the thermostat. Change the thermostat first. Also check to make sure your fan belt is in good shape and tight. Maybe it is slipping. I suppose there is a slight possibility that it is the temp sending unit.
 
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