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Topic: Coolant loss (Read 388 times) |
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brewer
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Coolant loss
« on: Oct 3rd, 2005, 6:36pm » |
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My '95 Cossie (74000 miles) is slowly losing coolant - every month or so the warning light comes on and I need to top it up.There's no obvious leaks,everything looks dry and there are no damp patches underneath. I recently had some bother with hesitant running from cold and a misfire (I've another thread on that) which seemed to suggest a head gasket problem , but this has been checked for and is OK. I have occasionally noticed that when I walk past the car after a run I feel heat from the bonnet and this comes from the header tank. I've replaced the cap and this makes no difference. Any ideas please anyone?
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des
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Re: Coolant loss
« Reply #1 on: Oct 3rd, 2005, 7:30pm » |
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does the temperature read just a little bit higher at all
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brewer
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Re: Coolant loss
« Reply #2 on: Oct 3rd, 2005, 8:09pm » |
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Not sure because I never took much notice. No problems towing a caravan for 100 miles though. And I'm wondering if the header tank gets hot after a run rather than during it.
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Snoopy
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Re: Coolant loss
« Reply #3 on: Oct 4th, 2005, 7:45am » |
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Check the bottom of the radiator for the the dreaded ballooning it can weep from there and not get noticed!
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martin_rowe
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Re: Coolant loss
« Reply #4 on: Oct 4th, 2005, 8:30am » |
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also check heater matrix, do you get a funny smell in the car or steamed up w/screen.
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brewer
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Re: Coolant loss
« Reply #5 on: Oct 4th, 2005, 9:06am » |
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I'll check the radiator next I had the auxilliary belts changed and surely the garage would have noticed a ballooning radiator? But would a weep cause the header tank to fill up with hot water?Does the bonnet normally get hot after a run?All very puzzling!
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shionogi247
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Re: Coolant loss
« Reply #6 on: Oct 19th, 2005, 8:28pm » |
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Hi Brewer, I had the same problem as you with my Cosworth, a bit of coolant loss, nothing to worry about, but every 1000 kilometers a refill was needed, temperature of the engine was fine etc. but I was still a bit worried about it. Couldn't find the cause until one day I parked the car, came back after an hour and my girlfriend noticed a little bit of water under the right front end of the car, right in front of the wheel. I turned out to be coolant, and when I opened the bonnet I immediately looked at the coolant reservoir that's located in the left side of the engine bay (front view). This coolant tank has a fluid level sensor fitted to it, and this sensor was obviously leaking coolant, it dripped down on the window washer reservoir and from there down the car. The only solution was to exchange the whole reservoir, as the before mentioned sensor cannot be exchanged seperately. Cost of the new tank was about 20 Euro (14 UK Pound I think) and untill now everything is fine Also check the coolant hoses for leakage, I had a few hoses replaced because when they get older they tend to leak, at least that's my experience. Good luck Hans
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Shionogi
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