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Old 05-31-2013, 06:00 PM   #1
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MPH = higher engine temp??

So after changing water pump radiator hoses thermostat fan clutch and fan, new belts etc. etc . I took my 85 itasca with a Chevy 454 for its first test drive. Now forgive me but I'm really new to the RV thing. At 45 mph she's at about 230 deg at 55 mph it's at 235 deg at 65 it's at about 245 deg. I've read that this thing should run at 225deg. Does this mean the faster I go the warmer it will get? Is there something I missed ? It's @ 240 just at idle. Do I have bigger issues?
It has a little. Carb trouble since I got it. Could this be a factor? It just idles a bit rough.
I'm stumped!
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Old 05-31-2013, 06:02 PM   #2
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Also new cooling fans wired to come on with the switch.
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Old 05-31-2013, 06:03 PM   #3
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No leaks , no crimped hoses. Wth?
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Old 05-31-2013, 06:06 PM   #4
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I was letting it idle while typing this. When I shut it off the needle buried itself past 260 deg. That cannot be good.
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Old 05-31-2013, 06:08 PM   #5
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Radiator could be plugged up.
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Old 05-31-2013, 06:10 PM   #6
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Radiator could be plugged up.
It could I suppose. It's brand new tho!
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Old 05-31-2013, 06:12 PM   #7
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I was letting it idle while typing this. When I shut it off the needle buried itself past 260 deg. That cannot be good.
I thought the fans were wired thru a thermostat and ran for a while after you shut the engine off,
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Old 05-31-2013, 06:14 PM   #8
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Were the numbers the same before you started?
Do you have an engine driven rad fan , with a theromostatic hub ?
Does that fan ever come up to full engine speed, people complain a lot about the amount of noise they make .
Ever cleaned the out side of the rad? Changed the theromostat?
Looked for debris between the A/C condensor and the rad?
Changed the coolant temp sensor ? Checked the gauge accuracy with an infared temp gauge, pointed at the t'stat housing?
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Old 05-31-2013, 06:23 PM   #9
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I hav put all new parts in it except for the temp sensor. I checked with infrared thermometer and the gauge seems to be close, maybe a little high. Off by maybe 2 deg. Could it be running too lean? Would that cause this condition
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Old 05-31-2013, 06:23 PM   #10
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Bilito,
Is it consuming any water??? If so it will be a blown head gasket. :-(
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Old 05-31-2013, 06:25 PM   #11
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Quote:
Originally Posted by Skip426 View Post
Were the numbers the same before you started?
Do you have an engine driven rad fan , with a theromostatic hub ?
Does that fan ever come up to full engine speed, people complain a lot about the amount of noise they make .
Ever cleaned the out side of the rad? Changed the theromostat?
Looked for debris between the A/C condensor and the rad?
Changed the coolant temp sensor ? Checked the gauge accuracy with an infared temp gauge, pointed at the t'stat housing?
The numbers were the same before the freshen up. I removed everything back to the block and put it back new. Fan dis engages as it should.
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Old 05-31-2013, 06:29 PM   #12
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This is a text book case of blown head gasket.
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Old 05-31-2013, 06:40 PM   #13
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On many cars, i had to replace rads. You can flush em til the cows come home with little to no improvement. Always went with new ones with another row of fins. Worked!
Just sayin...
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Old 05-31-2013, 06:45 PM   #14
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Bilito,
Is it consuming any water??? If so it will be a blown head gasket. :-(
It doesn't seem to be consuming water. And oil and water aren't mixing that I can tell.
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