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Old 01-19-2005, 02:02   #1 (permalink)
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Hot after head gasket

Hey all after i fixed my head gasket there seems to be a problem with the temperature being higher? Instead of hovering half way, it now sits closer to 3/4????

Whats causing this??

thanks
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Old 01-20-2005, 02:31   #2 (permalink)
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Re: Hot after head gasket

Snavy, I found my temperature gauge was higher after using a 50% Ford coolant mix in my AUII, after draining the system and refilling with a 33% mix the high temp readings were gone and it was back to normal, my conclusion is that the more anti freeze/anti boil the hotter the engine will run. I think if the engine runs hotter that will leave less margin for safe engine operation in extremely hot weather, hope this helps
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Old 01-20-2005, 23:38   #3 (permalink)
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Re: Hot after head gasket

i think a 50% mix was done. But i dont think this would be an issue? Anyone else have an answer?
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Old 01-21-2005, 04:13   #4 (permalink)
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Re: Hot after head gasket

Possibly some air is system?? Or is that you are taking more notice of it now ?? It has been hotter the last couple of weeks...Possibly cleaned out gunk around temp senser making it more sensitive ???
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Old 01-21-2005, 17:55   #5 (permalink)
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Re: Hot after head gasket

wheres the temp sensor? Nah the car never hovers around that mark. Also it hit that mark in the morning when it wasnt even that hot so somethnig is up.

Do you have to replace the thermostat?
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Old 01-22-2005, 22:37   #6 (permalink)
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Re: Hot after head gasket

Ford Jeepman is right - More antifreeze and the car will run much hotter and dont believe that the i6 holds 15 litres total otherwise you will stuf the ratios up, I run Valvoline G-05 and mixed it at a higher ratio and the car got alot warmer than it previousl had and that was with old dirty coolant

I did a head change a few weeks ago on my parents car and it ran hotter (100 + on the speedo readout) so i replaced the thermostat although it opened when put in boiling water..... All seem good now

Also have you run the heater to purge the heating system - Also you have to disconnect the top 10mm hose from the thermostat housing to purge air as it it the highest point in the system
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Old 01-24-2005, 00:43   #7 (permalink)
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Re: Hot after head gasket

i changed the thermostat and bleed the system still hot!

whats going on?
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Old 01-24-2005, 03:18   #8 (permalink)
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Re: Hot after head gasket

stoppid question but you didnt put the gasket back to front or wrong way up??
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Old 01-28-2005, 03:37   #9 (permalink)
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Re: Hot after head gasket

Hello Snavy, I did 3 cooling system flushes, the first 2 were 50% mix, one was Ford R1-33(Green) the second was Castrol anti freeze anti boil, with both the engine ran hotter and the fans cycled more often than they did before and in mild ambient temperatures. I decided to do one more and I drained the system ( it dumped about 7 litres in the bucket before stopping leaving another 9 litres in the block) I added 7 litres of demineralised water and took it for a drive and the temp gauge was back to its old self and fans did not run their arses off. I ended up completely flushing the system with demineralised water so when I drained it there was no green and then refilled using a 33% mix as recommended by Ford... no problems and I thoroughly "tested" the XR to stress the cooling system! This quote comes from my AUII owner's manual "The initial factory fill is a 33% by volume mixture of glycol-based anti-freeze/anti-corrosion in water. meeting Ford spec WSS-M97B44-A and part number R1-33 which is green in colour" I reckon the factory advice is OK because they do hot weather testing in the NT at Katherine and I know how hot it gets up personally. Check all your hoses as the oldest ones will be your weakest link. If I can save someone else all the time I wasted (not to mention $$$) then it is probably worth it, I hope this helps and you solve your your problem one way or another
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Old 01-28-2005, 12:33   #10 (permalink)
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Re: Hot after head gasket

took the car to radiator joint the radiator was stuffed! filled with everythnig under the sun and was rusty etc.

Funny thing was coolant always stayed green??

Well all sorted now new radiator is working a treat.
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