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#1
09-27-2004, 01:05 PM
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Convert outside temp gauge to intake temp?
I was curious on converting my outside temp gauge to read my intake temp instead. I have gathered some great info on the probe, but my concern is the head unit. From looking through diagnostic threads on the head unit, the head unit may only allow a reading of up to 136 degrees F or 58 degrees C. Can anyone confirm this? If the head unit cuts off at this temperature, I may choose not to try this. Thank you!
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#2
09-27-2004, 02:17 PM
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I have noticed that my outside temp readout goes blank at a certain temp...for example if I am sitting parked on hot blacktop on a high summer day....so yes, it does have a high reading. What's the hottest an intake temp could get?
__________________
'86 420SE Euro 904 Midnight Blue, Gray Velour Dad bought it new, now I own it. "A Mercedes-Benz is like a fine wine, it only gets better with age."
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#3
09-27-2004, 02:28 PM
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The outside temp gauge in my SDL is goofy. It works to about 65*F. Above that it reads very high peaking at 136 when outside temps are above 80*F. So I'd say 136*F is as high as it goes.
Sixto 95 S420 87 300SDL
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#4
09-27-2004, 05:19 PM
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You might have better luck adapting this aviation remote sending unit as opposed to trying to change the existing probe - cheap also 100F -285F ($16)
__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o)
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#5
09-27-2004, 08:28 PM
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The main purpose for the outside temperature gauge is to advice the driver when freezing temperatures are reached outside, thus switching its reading between the outside temp and the word "I C E".
As almost everything designed by M-B, the unit is installed for safety reasons primarily.
__________________
A. Rosich CL 500, 1998  S 500 L, 1998  E 320 T, 1995  [Sadly sold  ]
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#6
09-27-2004, 08:33 PM
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Do you know if that is true for the 202 as well? I don't recall reading anything about that in the manual. Sounds like a neat feature though. Is the sender near the road surface?
Mike
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#7
09-27-2004, 08:55 PM
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A .rosich:?
it reads 'ice'?i've never had that on mine-'95s500.does this apply to newer readouts or just certain models?
__________________
'95 s500 (bought for wife but can't bear to share!!!) 125kms '92 legend 180kms '88 tbirdturbo(fantastic car-only regular maint.)120kms '87 mustang gt(gone) '86 tbirdturbo(gone) '85 mustang gt(gone-but not forgotten)
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#8
09-28-2004, 07:04 AM
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Quote:
~Nautilus
__________________
1990 260E Sportline (that's 300E 2.6 for our American friends) -> sold 2001 E320 4Matic Elegance -> my Dad's daily drive 2005 Seat Leon FR 1.8T
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#9
09-28-2004, 10:56 AM
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It looks like the unit only scales to 136 degrees F. The reason for looking into this modification is that I just wanted to see the corrilation of boost pressure to intake temp without the clutter of aftermarket gauges. Yes the outside temp gauge is a safety device for icy conditions. I simply choose to watch the weather channel and drive cautiously whenever ice is possible. Just my choice. Thanks for everyone's input to help me decide to do this or not!
Last edited by Ex-Car of Bob's; 09-29-2004 at 11:12 AM.
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