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05-31-2013, 06:00 PM
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#1
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Senior Member
Join Date: Feb 2013
Location: VillaRica, GA
Posts: 126
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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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Jarog 
1986 Itasca sunflyer, chevy 454 p-30 chasis
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05-31-2013, 06:02 PM
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#2
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Senior Member
Join Date: Feb 2013
Location: VillaRica, GA
Posts: 126
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Also new cooling fans wired to come on with the switch.
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Jarog
1986 Itasca sunflyer, chevy 454 p-30 chasis
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05-31-2013, 06:03 PM
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#3
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Senior Member
Join Date: Feb 2013
Location: VillaRica, GA
Posts: 126
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No leaks , no crimped hoses. Wth?
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Jarog
1986 Itasca sunflyer, chevy 454 p-30 chasis
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05-31-2013, 06:06 PM
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#4
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Senior Member
Join Date: Feb 2013
Location: VillaRica, GA
Posts: 126
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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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Jarog
1986 Itasca sunflyer, chevy 454 p-30 chasis
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05-31-2013, 06:08 PM
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#5
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Senior Member
Join Date: Dec 2010
Location: Ocala, FL
Posts: 468
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Radiator could be plugged up.
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2002 Fleetwood Fiesta 31H--F53, 2002 Toyota Tacoma Xtra cab, drive line disconnect.
2 cats: "Rusty"--male, 22 lb, 13 year old red mackerel tabby with white DSH, & "Penny"--female, 15 lb, 11 year old black and white DLH.
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05-31-2013, 06:10 PM
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#6
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Senior Member
Join Date: Feb 2013
Location: VillaRica, GA
Posts: 126
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Quote:
Originally Posted by wackymac
Radiator could be plugged up.
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It could I suppose. It's brand new tho!
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Jarog
1986 Itasca sunflyer, chevy 454 p-30 chasis
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05-31-2013, 06:12 PM
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#7
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Senior Member
Join Date: Jan 2012
Location: Cutler Bay, Florida
Posts: 707
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Quote:
Originally Posted by Jarog
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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I thought the fans were wired thru a thermostat and ran for a while after you shut the engine off,
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05-31-2013, 06:14 PM
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#8
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 27,896
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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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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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05-31-2013, 06:23 PM
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#9
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Senior Member
Join Date: Feb 2013
Location: VillaRica, GA
Posts: 126
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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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Jarog
1986 Itasca sunflyer, chevy 454 p-30 chasis
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05-31-2013, 06:23 PM
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#10
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Senior Member
Newmar Owners Club Solo Rvers Club
Join Date: Jul 2012
Location: NEPA
Posts: 142
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Bilito,
Is it consuming any water??? If so it will be a blown head gasket. :-(
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05-31-2013, 06:25 PM
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#11
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Senior Member
Join Date: Feb 2013
Location: VillaRica, GA
Posts: 126
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Quote:
Originally Posted by Skip426
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.
__________________
Jarog
1986 Itasca sunflyer, chevy 454 p-30 chasis
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05-31-2013, 06:29 PM
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#12
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Senior Member
National RV Owners Club
Join Date: Feb 2012
Location: Spokane Valley, Wa
Posts: 1,987
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This is a text book case of blown head gasket.
__________________
Art
1999 Trade Winds 7371 Cat 3126B w/current upgrades
1990 D 250 Dodge Ram Cummins Turbo
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05-31-2013, 06:40 PM
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#13
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Senior Member
Join Date: Jul 2012
Location: Fulltime, USA
Posts: 16,702
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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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05-31-2013, 06:45 PM
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#14
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Senior Member
Join Date: Feb 2013
Location: VillaRica, GA
Posts: 126
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Quote:
Originally Posted by Chow5656
Bilito,
Is it consuming any water??? If so it will be a blown head gasket. :-(
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It doesn't seem to be consuming water. And oil and water aren't mixing that I can tell.
__________________
Jarog
1986 Itasca sunflyer, chevy 454 p-30 chasis
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