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Old 06-03-2004, 04:16   #1 (permalink)
jed
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confused At wits end....XF Overheating.....what else can I try?????

G'day,
Just a quick question about my XF 4.1 crossflow motor. It was rebuilt and I have put the engine back in the car and it overheats. Not from taking it for a drive, but within minutes of starting the car and just with it idling it is getting hot. I have tried all the usual like: Checked all waterpipes, radiator, head gasket, distributor etc etc etc.

I am at wits end as to what to do next. Any suggestions would be great.

Has anyone else had this problem?
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Old 06-03-2004, 04:24   #2 (permalink)
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Re: At wits end....XF Overheating.....what else can I try?????

the cylinder head may have a hair line crack through it, get it checked asap
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Old 06-03-2004, 04:26   #3 (permalink)
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Re: At wits end....XF Overheating.....what else can I try?????

its over heating because the temp gauge tells you so? i find it hard to believe that it can over heat that quick. all gaskets were put on right? thermostat is put in the right way? nothing blocking the water flow? is there even inhibitor or coolant in the radiator?
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Old 06-03-2004, 04:42   #4 (permalink)
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Re: At wits end....XF Overheating.....what else can I try?????

Could be a few things blocked radiator, faulty thermostat, fault clutch fan or head gasket fitted incorrectly (possibly backward?).

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Old 06-03-2004, 05:00   #5 (permalink)
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Re: At wits end....XF Overheating.....what else can I try?????

Grab a thermometer (or take it to a radiator joint) and actually measure the temperature of the coolant. With the old Fords at least - the temp gauge would swing high if you lost the earth - so it is possible that either the sender or wiring is stuffed.
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Old 06-03-2004, 08:09   #6 (permalink)
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Re: At wits end....XF Overheating.....what else can I try?????

Id say its more electrical if its showing hot without even driving it,
Does the thermostat housing feel like its very hot when the gauge is up?
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Old 06-04-2004, 00:18   #7 (permalink)
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Re: At wits end....XF Overheating.....what else can I try?????

I bought a new head gasket, triple checked that it's in right. I've taken the thermostat out. It was overheating with it in. Nothing blocking the water flow and I must admit there is no coolant in the radiator now because I have taken the water pipes off that many times to check to see if there all ok. It only takes about 10 mins max and it's shows 3/4 hot already. Can't take it to anyone cause it is getting to damn hot too fast to go anywhere. Will check everything again that everyone has suggested.
Thanks Fellas
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Old 06-04-2004, 00:43   #8 (permalink)
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Re: At wits end....XF Overheating.....what else can I try?????

Was the water pump replaced with a new one or the old worn one fitted?
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Old 06-04-2004, 08:02   #9 (permalink)
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Re: At wits end....XF Overheating.....what else can I try?????

Ok, I've kept my XF running with bandaids and bits of strings so here goes..

take a garden hose, with all of the engine hoses off plug the garden hose into the
the front heater inlet, check that water comes out of the outlets, start plugging up the outlets that run the fastest (clearest flow) keep plugging until you see one that is not flowing, (indicating a blockage)

If no blockage then connect the bottom radiator hose, check the flow again, connect the top radiator hose, with the cap off you should have the same amount of water overflowing as going into the heater line, you should now have a completely full water jacket.

Keep the garden hose flowing slowly, start the engine, watch the temp, if it doesn't rise then assume problems with heater radiator blockage or air lock, ( you have an airlock bleed nipple on the water pump housing) flush the heater radiator core,
check the T junction on the inlet side near the firewall, (blocks easily and stays that way)

Hope this helps
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Quote:
Originally Posted by jed
G'day,
Just a quick question about my XF 4.1 crossflow motor. It was rebuilt and I have put the engine back in the car and it overheats. Not from taking it for a drive, but within minutes of starting the car and just with it idling it is getting hot. I have tried all the usual like: Checked all waterpipes, radiator, head gasket, distributor etc etc etc.

I am at wits end as to what to do next. Any suggestions would be great.

Has anyone else had this problem?
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Old 06-04-2004, 09:48   #10 (permalink)
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Re: At wits end....XF Overheating.....what else can I try?????

Have you reconnected the water pump fan belt?

No water pump turning = get hot real quick.

Is the pump in good order?

Does the engine FEEL really hot? Could try a new temp sender (inexpensive). Did all your gear work AOK before fitting the new engine?
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