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#1
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Excessive cabin heat temperature
Owner of a '97 W210 with excessive cabin heat coming from drivers side area somewhere when no A/C is on. We constantly have to be running the A/C in order to keep the temp down to a comfortable level. Can't seem to identify the source while driving.
Anybody have any ideas??
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Norm K. '97 E420 Sport '06 E350 Sedan '67 Mustang Coupe '70 F-250 '15 VW Jetta |
#2
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'97 W210 420 !!!!!
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Norm K. '97 E420 Sport '06 E350 Sedan '67 Mustang Coupe '70 F-250 '15 VW Jetta |
#3
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The duovalve could have failed. This regulates the flow of hot coolant to the heater.
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Prost! |
#4
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Wouldn't this duovalve failure trigger the check engine light to come on? We have no such indicator.
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Norm K. '97 E420 Sport '06 E350 Sedan '67 Mustang Coupe '70 F-250 '15 VW Jetta |
#5
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Not a check-engine light, but there could be some indications available by running the diagnostics on the climate control module. See this site for how-to:
http://www.eclassbenz.com/node/27
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Prost! |
#6
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Possibly a stuck open air flap, too.
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-tp 1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS 1988 560SEL "Gunther"- 190K passes anything except a gas station 1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition |
#7
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I have not done a diagnostic check as I will have to wait for the weekend to do this.
The problem seems to come from the feet or shin of the legs area and seems to be more prevalent when the care reaches operating temperature. Can't seem to identify when I am driving the car!
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Norm K. '97 E420 Sport '06 E350 Sedan '67 Mustang Coupe '70 F-250 '15 VW Jetta |
#8
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Found the problem.
It was a torn steering shaft boot located on the fire wall. It look like it was a real problem to replace so I just used some HVAC aluminum tape to cover the boot. Works great, now I can roll the window down without feeling like the heater is on. Thanks for all the support guys!!
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Norm K. '97 E420 Sport '06 E350 Sedan '67 Mustang Coupe '70 F-250 '15 VW Jetta |
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