Thermostat for all 601 and non-turbo 602 should begin opening at 85 +/- 2, fully open at 94 degrees centigrade (that's what they use in Germany, Rich and Roger). Minimum stroke at 94 is 8mm. -- Max Dillon Charleston SC '95 E300 '87 300TD
Max Dillon <meadedil...@bellsouth.net> wrote: I'd test the thermostat first, then consider the water pump. Do you know the spec for how wide it should open and at which temperature? I'll dig around, should have that somewhere. -- Max Dillon Charleston SC '95 E300 '87 300TD Curt Raymond <curtlud...@yahoo.com> wrote: So yesterday morning things seemed good, temp stayed below 100C. Last night on the way home I got stuck in heavy traffic and the temp hung around 110C with trips up to the white line just before the red line. It was cool out, maybe 65F so outside temp is not much of a factor. One time it was getting high, I was running the cabin heat which was blowing hot air really well but making no difference and in desperation I slipped the trans into neutral and revved the engine which brought the temp down about 10C degrees really quickly. I didn't pull over and check the temp with my IR thermometer which I should have (looking weird on the side of the road be dammed) but my experience thus far shows that the relative position of the temp gauge is right, meaning as it rises the temp is really rising, although the gauge itself is usually off about 10C. So the car probably wasn't really overheating like I was afraid of but in the moment you get nervous... Anyway the revving thing makes me wonder if I haven't got a defective water pump. I can't see where its leaking and the coolant doesn't go down a noticeable amount. I suppose what I really need to do is replace the temp sensor but even a sensor not giving me the right temp is still giving me information that says the temp of the engine varies rather a lot (confirmed with the IR thermometer). Ideas? -Curt _____________________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _____________________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
