Heyo, cooling issues aren't typically something you run into in the midst of winter, but this isn't a bad time for it either- far better now than stuck on the M5 with your temps at redline.
As I read through the description, I thought immediately a thermostat. No, you removed that and it tests fine. Hmm. I next thought water pump as it sounds like we're not getting any circulation through the system. You pulled the pump and verfied the thing was working. I had the odd thought the impeller blade assembly had come off, which is highly unlikely, but has happened before since it's a press fit assembly. So, you have no water going through the heater. That's not critical, but it's a decent indicator of something blocking or no flow. You aren't losing any amount of coolant, so I'd rule out a head gasket leak or any leak at all really. That's good. You might try bypassing the heater core completely and just loop the heater hose right past the valve assembly. Just don't include the heater in the circuit at all so it's only got the engine cooling. Check and see if the problem still remains (high running temps). At least you can separate the systems and determine which half is causing the problem. I swear it sounds like the impellor isn't turning on the water pump. When the engine gets warm, is the upper hose warm and the lower one cold? That would confirm a blockage or lack of circulation. I don't think a pressure test is going to help here in this case. -Vegaman Dan -1968 Mk III "Giles" *** http://www.team.net/the-local *** Your messages not reaching the list? Check out http://www.team.net/posting.html *** unsubscribe/change address requests to [EMAIL PROTECTED] or try *** http://www.team.net/cgi-bin/majorcool *** http://www.team.net/mailman/listinfo *** Archives at http://www.team.net/archive *** Edit your replies!
