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Overheat (Read 109 times)
Steve near Chicago
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Overheat
Oct 8th, 2019 at 5:09pm
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My ‘86 N/A overheated on the way home, blowing off the lower radiator hose at the water pump housing. Pulled and tested the thermostat which tested OK. Water pump?

Thanks in advance,
Steve near Chicago
  
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OhioTom
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Re: Overheat
Reply #1 - Oct 8th, 2019 at 8:35pm
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Hmm. Usually that means thermostat.

But..
Has she been using coolant?
could it have been low on coolant?

I know when they get low, they can get an air pocket in the system that remains in the head. This will lead to overheating and over-pressurization of the system.

Usually, over-pressure vents out the cap on the reservoir.
The fact that it blew a hose off and didn't blow off the overflow reservoir cap makes me think the hose/clamp was bad anyways.
The stock German clamps give up after a while. I just replace all the clamps when doing the waterpump anyways.
Re-using old clamps always leads to a leak.

  

Tom Simpson&&VW/Porsche freak.
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Steve near Chicago
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Re: Overheat
Reply #2 - Oct 12th, 2019 at 4:28pm
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It had been using some coolant but I don't believe it was low. Starting to think maybe head gasket. How would I check that?

Steve
  
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