PeachParts Mercedes-Benz Forum - View Single Post

lrg · #13 08-31-2004, 05:37 PM

Maybe my car is unusual but I'll pull some pretty steep grades up route 80 in the Sierras in hot weather and never see the high side of 105. My 123 heats up easily under load but my 124 just doesn't. Without other symptoms of a cracked head I think you're OK there (for now). It's the new radiator that has me wondering. Whenever a new problem crops up after a recent repair suspect something related to the repair or because of damage done from the failure that necessitated the repair. In your case you may want to check the radiator for proper flow (new or not), the water pump and hoses. If the temp is normal except going up grades it's probably not the t-stat. You're problem sounds more like a cooling capacity problem. Also it's probably a good idea to check the fan clutch too, even though it ought not to matter at higher speeds it might be a contributing factor. With all due respect to others here who disagree I think you do have a problem, probably (hopefully) not a serious one. Good luck and keep us posted.