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 Post subject: overheating
PostPosted: Fri Feb 27, 2009 9:42 am 
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ok so i got my car registered the other day for the first time. it has a problem i drive it around the block and the guage goes up to hot i get out check the water plently of water and the water in the radiator is cold enough to put my finger in (warm but not real hot) i have nop air bubbles in radiator so no cracked head and i have no idea what it is i thought it may be the water pump so i put a new one in and still not working. still getting hot. can someone pleasea tell me whats wrong? i have tried a different guage and sender as well.

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PostPosted: Fri Feb 27, 2009 9:47 am 
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could be a wiring issue.....what gauge do you have? electric or mechanical?
If its electric is it wired in though the voltage regulator on the back of the speedo head?
Also is it wired correctly?
Have you tested the voltage regulator with a multi meter?
does your fuel gauge operate correctly?

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PostPosted: Fri Feb 27, 2009 9:54 am 
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electric guage, fuel guage does not read accurately full tank when empty, is wired through through the regualtor on back of speedo. could this regualator be haddit?...... but i pull off the hoses and there is no water flow...... shouldnt there be water coming out? its a late style radiator off a clubby so there is that metal pipe coming from bottom of radiator up to top.....this is the hose i pull off and there is no water coming out.

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PostPosted: Fri Feb 27, 2009 10:16 am 
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carter wrote:
electric guage, fuel guage does not read accurately full tank when empty, is wired through through the regualtor on back of speedo. could this regualator be haddit?

it is possible......does the fuel gauge go to full when the tank is empty?
the out put of the voltage regulator should be about 9 - 10 volts but if its pushing out more or not at all its stuffed.
If you have a wiring diagram handy check your wiring against it and if its all ok and you have a spare known good voltage reg swap it over and check it.
Have you changed from generator to alternator?
May also mean you need to get the gauges re-calibrated to suit.

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PostPosted: Fri Feb 27, 2009 10:18 am 
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fuel guage always reads full even if it is empty.....should there be water flowing out of pipes when you pull them off????

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PostPosted: Fri Feb 27, 2009 10:24 am 
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carter wrote:
fuel guage always reads full even if it is empty.....should there be water flowing out of pipes when you pull them off????


What pipes?

I'd be lookng closely at the wiring and votlage regulator.

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PostPosted: Fri Feb 27, 2009 10:26 am 
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i have a late clubby radiator with the metal pipe coming from the bottom of the radiator to the top for a heater or whatnot. i pull the hose off that start the car up and there is no water flowing out from it also the hose off the drivers side of the head and no flow coes from there either.

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 Post subject:
PostPosted: Fri Feb 27, 2009 10:32 am 
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carter wrote:
i have a late clubby radiator with the metal pipe coming from the bottom of the radiator to the top for a heater or whatnot. i pull the hose off that start the car up and there is no water flowing out from it also the hose off the drivers side of the head and no flow coes from there either.


Yes this is not good!! when or have you replaced the water pump? If not this is your first job, then go from there. get a 'Hi Flow' type

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 Post subject:
PostPosted: Fri Feb 27, 2009 10:33 am 
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the wiring is dodgy - but the thermostat might be stuck shut as well

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 Post subject:
PostPosted: Fri Feb 27, 2009 10:42 am 
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i replaced the water pump this morning with a brand new one. have tested the theremostat and it opens and closes no worries. but it is just a standard pump not a hi flow.

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 Post subject:
PostPosted: Fri Feb 27, 2009 10:52 am 
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gotta be the wiring - it's not uncommon for the voltage regulator to crap itself, Wombat sells replacement ones for ~$20 that'll never go wrong. I bought one, but lost it :(

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 Post subject:
PostPosted: Fri Feb 27, 2009 10:53 am 
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what about the water flow? my brother says a blockage in my block.... i hope this is not it but is there a possibility that this could be it?

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 Post subject:
PostPosted: Fri Feb 27, 2009 11:05 am 
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carter wrote:
what about the water flow? my brother says a blockage in my block.... i hope this is not it but is there a possibility that this could be it?


sorry... missed that

so you take off a heater hose with the engine running and no water comes out of it?

try the same with your top radiator hose - undo the hose and start the engine, if nothing comes out, take it off and start the engine... you'll soon see if you've got water flowing

have you had the radiator out? it could be completely blocked

what I like to do is take the radiator out, clamp a high pressure garden hose nozzle into the inlet, and blast wather through, then clamp the garden hose into the outlet and do the same, then fill it with water and shake it like hell, then repeat until nothing yukky comes out

I also do the same with the engine, take the thermostat out, then clamp your garden hose into the top rad hose, blast water till it comes out clean, then clamp the carden hose into the bottom rad hose, repeat, repeat, repeat until it's clean

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 Post subject:
PostPosted: Fri Feb 27, 2009 11:23 am 
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yea thats right no water...have had the radiator out and changed it over with another one this morning as well. i cleaned it to something similar to what you described

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 Post subject:
PostPosted: Fri Feb 27, 2009 11:34 am 
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:idea: have you removed the drain plug at the back of the block on the drivers side to see if that is blocked as well??

:arrow: The block may have a blockage and there may be no coolant flow around the engine which is not very good at al!!
Block and head may need to be stripped bare, bathed, hot tanked, etc, etc.... while your at it you may as well...........

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