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W210 Interesting Temp Guage Factoid
I was browing my Startek DVD looking for some information as to why my Coolant Guage in the instrument cluster and the Temp readout in the HVAC controls were different. Heres what I found regarding the ECT Guage
" This display (guage) is a plateau display. i.e. the pointer stops at 95 degrees C. at temps between 95 and 115 degrees C. Temperatures in this range are still not critical. The correct temp is only displayed again from a temp. of 116 degrees C. This prevents the driver from being disturbed by the display, for example at high outside temperatures. The warning rage starts at 116 degrees C. The coolant temp signal comes from the engine control module." I know my Passat was that way but I thought the MB was an actual reading. I guess I have to be "disturbed" by watching the HVAC module with the temps. incrementing from 88 to 105 depending on speed, ambient temp., and how long the hill climbs are.
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Dennis 2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles. 2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner 1997 E300d Silver 300,000 miles As of Jan 05, 2010 3rd owner SOLD |
#2
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...A shame Benz had to go that direction simply b/c of owners misconceptions and worry over of the variable Thermal Heat Loads encountered in a water cooled engine.
We used to see so many threads concerning the Benz temp gauge being compared to the Asisan Imports of the World... [ " My Honda stays right there all the time, never flinches !! " ] I personally prefered the Correct temp displayed.... ...Placebo Gauges...
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A Dalton |
#3
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My '96 does not act this way. What year is your car?
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#4
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Mine is 1997. the guage does move freely from 88 to 95 but never goes past 95 even when the HVAC temp is saying its 105 C engine temp
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Dennis 2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles. 2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner 1997 E300d Silver 300,000 miles As of Jan 05, 2010 3rd owner SOLD |
#5
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I monitor the CCU coolant temp on hot days. Its never gotten above 213f. I'd swear the dash temp gauge read 100C at that time.....?
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Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.) |
#6
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Maybe it was only for the 97 model year, as the Startek DVD is model and year specific.
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Dennis 2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles. 2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner 1997 E300d Silver 300,000 miles As of Jan 05, 2010 3rd owner SOLD |
#8
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AFAIK, most cars are designed this way...the temp gauge on my Supra is dampened, and stays in the same spot all the time, unless it gets REALLY hot, then it immediately shoots up to the red, and by that point it's usually too late...
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Current cars: 2000 ML55 AMG, 174k miles 2003 C240 T-Modell, 202k miles 1995 S320, 207k Miles |
#9
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213F = 100.6c
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2002 E320 4-Matic 2008 Subaru Outback 2009 Subaru Forester |
#10
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Exactly....the gauge did not read 95C.
My CCU display also reads out in F whereas the OP reads in C. Fairly common with W210's of this era.
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Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.) |
#11
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BTW, where is the temp sensor on this engine (OM 606) and is there a separate sensor for the gauge and the computer?
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-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
#12
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Quote:
The single sensors is completely independent of any other circuits [ non-integrated] and is a simple temp gauge [ volt meter] with a ground signal thru a thermistor. The later dampen style have a temp sensor that intergrates all coolant temp inputs into the motronic IC Input for distribution and is used by different systems. That is why HFM had so many temp sensors and Motronic has one.
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A Dalton |
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