91 300E 2.6 stalls once the temperature goes above 90-95 deg c. - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 03-10-2012, 07:28 PM Thread Starter
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Date registered: Oct 2011
Vehicle: 1991 300E 2.6
Location: NJ
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Unhappy 91 300E 2.6 stalls once the temperature goes above 90-95 deg c.

My wife's 91 300E 2.6 stalls once the temperature goes above 90-95 deg c.
It will crank but wont start. I have to wait until the temperature goes back down to below 80 deg c. and it will start fine with no problems.
I've replaced the fans (one of them was not working, so I replaced both), also replaced the thermostat.
I have no idea of what's wrong. I think there might be an overtemp switch that controls everything else & once it heats up, it shuts ignition and fuel pump until its back down to lower temps.
The car has 190K miles on it, and other than this stalling problem, we've never had a problem with it. This is the best car we've ever owned.
Does anybody have any idea of what it might be.
Thanks in advance
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post #2 of 2 (permalink) Old 03-11-2012, 08:08 AM
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Date registered: May 2006
Vehicle: 2001 E320 - Brilliant Silver/Ash: 107,000+
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Classic symptoms of a failed CPS (crankshaft position sensor). But your car is a W124 so you might check that forum, found under the sedans heading, for confirmation.

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