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Disabled EGR, Now my SD runs Hotter! Suggestions?
Guys,
I recently disabled the EGR on my 85 300SD by blocking vacuum hose with a ball bearing. I LOVE the results. Much improved shifting...especially first to second...smoooooth! Acceleration seems better also, but not as drastic as the shifting improvement. And, it appears mpg is going to get better (my goal in first place)...I’m over 200 miles a little less than half an tank. And to make things even better...there’s hardly any smoke, even on heavy acceleration!
So here’s the downside. My car runs hotter. Not overheating HOT (coolant reservior not even very warm to touch and level is same as always). Physically every thing seems the same. But the temp gauge used to hold steady at around 85C, on hot days it might creep up to 90C if a/c on in slow traffic. Now, after disabling EGR, it holds a bit around 92C to 95C, and after a “spirited” run in which I got it up to about 4600 rpm once or twice as I usually do, it ran up to just a hair over 100C while idling at end of freeway ramp. After the light changed and I started driving street speeds of about 30-40 mph, it went back to about 92C quickly. Now bear in mind on that day it was about 68F outside (I’m in San Antonio).
So guys, should I worry. I know it’s still in normal temp range and hasn’t come even close to overheating. I just got used to it being around 85C! And here in Texas, it will be 90F plus outside in a few months. Should I reconnect EGR? I don't want to, but I don't want to overheat. Any suggestions/ideas appreciated.
Reg in Texas
85 300SD,
Astral Silver, A Beauty!
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