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#1
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420 SEL overheating or?
My 1991 420 SEL has a little temp guage quirk, started today. Engine cold, start car, temp guage goes immediately to 80+ (C).
It then goes up a little as the engine works. Normally of course it would be at 0, just below 40 (C) then stay somewhere between the 60 - 80 range (C). I'm thinking possible temp sender? Maybe a static resistance reading on the sender that I can measure. Possibly beginning to fail and using the 80 mark as a starting point? Any experiences with this issue? thanks..... s-ball |
#2
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80*C is the ideal normal operating tempreture. Don't see any problems.
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#3
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I think our friend is saying that the gauge reads 80C when first started in the morning.
Check that there's a good connection between the wire and the sensor and maybe pull the sensor and clean the threads on the sensor side and engine side to make sure there's a good ground path. No sealant, thread lock or teflon tape. Sixto 95 S420 91 300SE 87 300SDL 83 300SD |
#4
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right you are SIXTO:
It starts at 80 when cold. I'm looking into fasteners at connection and threads into block. thanks. s-ball |
#5
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Here is that info: [ single wire sensor-read from terminal to ground].
60C-110 ohm 80C-67 ohm 100C-38 ohm |
#6
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THANKS TO ALL.....
dirty connection points created additional resistance which created an improper signal problem now solved s-ball |
#7
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You can always count on Arthur to have ESP and to have a mind like a steel trap.
I don't know how he remembers all those numbers!
__________________
Paul S. 2001 E430, Bourdeaux Red, Oyster interior. 79,200 miles. 1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron". |
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