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  #1  
Old 05-08-2002, 01:43 PM
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Thumbs up New water pump is IN!

Fired it up and nothing flew out of the engine compartment....that's a good sign, right?

Now...just need to run the Prestone system cleaner thru and fill it up with the new Prestone 5yr/150Kmi. coolant.

Will prolly pick-up another bottle of water-wetter to dump in too.

man....after I got those new bolts and started this morning...it only took me about an hour to get everything put back together.
Thanks for the help and bearing with me, everyone who helped!

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1985 300SD - 'Grace' (198K mi.)
2018 Honda Civic Sport
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Old 05-08-2002, 02:18 PM
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Good job!!!
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Old 05-08-2002, 03:42 PM
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What order is the rest of the cooling system in? I'd go check the rest of the components while I was in there. Especially the aux coolant pump and the radiator. I had to have those replaced recently.
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  #4  
Old 05-08-2002, 04:42 PM
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No idea how or where to check those other components.

On another note. As I was performing my backyard coolant flush procedure, I had the top radiator hose disconnected from the radiator.

I let the engine reach full operating temp...which was about 82C according to the temp guage.

At this point, coolant was flowing out of the top radiator hose at about the same rate as if you were pouring drink out of a soda can.....I was replenishing the coolant with hose water while doing this.

I've never actually seen the coolant flow on any other car so I have no basis for comparison. Does this flow rate sound right?
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1985 300SD - 'Grace' (198K mi.)
2018 Honda Civic Sport
2018 Honda CRV LX
2010 Honda Fit Sport (RIP)
2013 Honda Accord Sport (Sold)
1996 Lexus LS400 (Retired)
1995 Ford Contour SE (Retired)
1976 Porsche 914 (Sold)
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  #5  
Old 05-08-2002, 10:40 PM
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ck42,

Congratulations! Glad to hear things are back together and working well.

The flow rate is pretty much normal. You have a relatively light heat load at idle and the thermostat is mixing the water coming from the hot engine with the water coming from the cooler radiator to maintain a fixed temperature. Since the flow through the radiator is proportional to the heat load, you are not seeing much flow under the conditions you observed. If you were at full load with the engine at high rpm, the flow rate would be substantially higher. The pump output increases dramatically with rpm and the thermostat will recirculate less hot water and draw in more cooled water, both of which will make the flow through the hose you were observing much higher.

Hope this helps, but it sounds like your engine is doing fine. Is the temp stable at around 80 degrees C? If so, things are fine. Good Luck, Jim
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1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
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Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
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  #6  
Old 05-09-2002, 01:56 AM
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Thanks for the confirmation Jim. I hadn't thought about the fresh cool water having an effect...

Took it out for a spin down the street and it looks like it's running at its *normal* 90C. Don't know how this temp is compared to others but for the short time I've had the car, 90C is where it pretty stays.
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1985 300SD - 'Grace' (198K mi.)
2018 Honda Civic Sport
2018 Honda CRV LX
2010 Honda Fit Sport (RIP)
2013 Honda Accord Sport (Sold)
1996 Lexus LS400 (Retired)
1995 Ford Contour SE (Retired)
1976 Porsche 914 (Sold)
1972 Datsun 240Z (RIP)
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  #7  
Old 05-09-2002, 02:06 AM
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ck42,

That sounds within the range people report as normal for the operating temperature. Mine sticks at about a needle width or two above 80 degrees C. Jim
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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #8  
Old 05-09-2002, 02:19 AM
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That needle's width above 80C is about exactly where mine was sitting when idling during my coolant fill tests. Never went higher.

Only after taking it out for a spin did the temp go up to 90C.

hope this is normal.

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Chris
1985 300SD - 'Grace' (198K mi.)
2018 Honda Civic Sport
2018 Honda CRV LX
2010 Honda Fit Sport (RIP)
2013 Honda Accord Sport (Sold)
1996 Lexus LS400 (Retired)
1995 Ford Contour SE (Retired)
1976 Porsche 914 (Sold)
1972 Datsun 240Z (RIP)
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