Van overheated !

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Van overheated !

Post by leopard_pagan on Tue Dec 07, 2010 8:00 am

FFFFSSSS!!!!


i did the head/skimming less than two months ago on this thing. every things been fine up til now.
vans been sat for 2 days as yesterday i rode to work (and froze things off!) i am in east anglia where it has been getting cold but not as cold as most places. yes i have antifreeze in as we put it in when we did the van. i have been checking the water every week since head was done. no water drop.
today half way in to journey the temp gauge is over to the hot bar, flip the fan switch on, blowers on full hot.
could hear boiling when i got to work, but temp didnt go over the hot bar!

co-workers think the block froze and water isnt circulating!
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Re: Van overheated !

Post by PFM on Tue Dec 07, 2010 8:33 am

Block would defrost pretty quickly with engine running, rad would take longer. Suggest checking levels before returning home and see how it behaves then.

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Re: Van overheated !

Post by leopard_pagan on Tue Dec 07, 2010 10:39 am

levels were low, took over a litre to re-fill.
last week levels were fine, just within the rad cap.
worked out.. not enough anti-freeze to start with after doing the head work 2 months ago.
so the plan now is to get a few litres of the stuff and get it in to the van!
start it up and see how the temperature behaves! see if i can bleed it back up..
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Re: Van overheated !

Post by dee26173 on Tue Dec 07, 2010 11:18 am

Gawd, least your's starts in this weather. Mine is just dead!!
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Re: Van overheated !

Post by leopard_pagan on Tue Dec 07, 2010 4:09 pm

got antifreeze in to it at lunch time, ran it up to temp, fan kicked in. didnt overheat or get near it for want of trying!
thing is i expect i did some damage while it was over heating for a few miles!
will check water levels in rad before i set off this eve
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Re: Van overheated !

Post by PFM on Tue Dec 07, 2010 7:40 pm

leopard_pagan wrote:i expect i did some damage while it was over heating for a few miles!

I doubt it - mine has overheated countless times in the past 15 years. (Maybe that's one reason I get holes in my core plugs!)

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Re: Van overheated !

Post by leopard_pagan on Wed Dec 08, 2010 5:22 pm

right, had the van in to garage as i dont have anywhere out of the cold to work on it.
they pressure checked the cooling system- no leaks.
re-bled up the system and hasnt overheated.

dunno if its just me...
with out the blowers on the temp gauge gets to half way.. even in the freezing cold.
but i usually have the blowers on 2nd setting.. maybe this pulls the temp down as the van normally runs between cold and halfway.. never goes above half unless i am in a traffic jam or sammats wrong.
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Re: Van overheated !

Post by PFM on Wed Dec 08, 2010 6:49 pm

Glad your van has returned to normal. My 1995 993 temp gauge is usually round half-way when warm (unless coolant is low!). Having the fan on (and mine has to be on 2nd setting as rheostat has gone on the first - anyone know where it is?) makes very little difference. My 1998 993 guage has always been lower, and since replacing the rad this year hardly gets to a quarter. This one never seems to overheat and loses only a tiny amount of water. Heater isn't as efficient either - maybe the matrix is partially blocked. :dontknow:

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Re: Van overheated !

Post by 8bit-ash on Wed Dec 08, 2010 11:14 pm

Have you retorqued the head yet?
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Re: Van overheated !

Post by leopard_pagan on Thu Dec 09, 2010 5:21 pm

errrrrrr.....noooooo...... Shocked
i take it we need to?
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Re: Van overheated !

Post by 8bit-ash on Thu Dec 09, 2010 6:16 pm

Guy at the machine shop where I had my head skimmed said its best to do it twice, Once after running it up to temperature after the rebuild and again after 500 miles. I think most people just do it after 500 ish miles though.
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Re: Van overheated !

Post by leopard_pagan on Thu Dec 09, 2010 9:10 pm

i'll mention it to my mate whos got the torque wrench, he gets back from the States tomorrow & need to let him catch up.
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