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Date:         Wed, 11 Jul 2001 21:12:45 -0400
Reply-To:     Andrew Fox <afox@USGS.GOV>
Sender:       Vanagon Mailing List <>
From:         Andrew Fox <afox@USGS.GOV>
Subject:      overheating
Content-type: text/plain; charset=us-ascii

The symptom: Van steadily gets hot upto about 7/8 of the temp gauge. Running both heaters on full blast while driving at highway speeds brings temp gauge down to about 3/4. With the new radiator the flow from the radiator bleed screw is pretty good. The radiator fan does'nt come on until the temp gauge reads about 9/10.

What I've done already: 1. Flushed system with water by installing flush tee in front heater return hose. 2. Replaced Green coolant with Orange Prestone extended life and bled the system. 3. Replaced temp gauge sensor twice (thought it might be faulty). 4. Replaced voltage regulator for temp and fuel gauges w/ new one. 5. Replaced thermostat with new normal (higher temp) one. 6. Replaced expansion tank pressure cap. 7. Tried running without thermostat. Took a long time to warm up then ran hot. 8. Replaced radiator. Flushed all the coolant out of the system with water. Bled system thouroughly. No more air bubbles from front bleed screw. Can't get anymore coolant in at the tank.

Any ideas about what to do next? How can I tell if my head gaskets are cracked or leaking? H20 pump is definitley pumping something, maybe not enough? Any ways to take the temperature of the van using an external thermometer? How can I tell if my coolant hoses are clogged and where they are clogged?

Many thanks to all who have helped me so far with this problem especially Ken at Vanagain and Boston Bob Donalds who offered advice on bleeding the system and all who respond to this one. I only have a few days left to fix this problem because I have to move -with or without the van.

Thanks, Andrew Fox 86 Westfalia GL 508-457-2356

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