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heat problem- different symptoms
Posted by Todd inMA [Email] (more from Todd inMA) on Wed, 15 Jan 2003 13:49:48
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I'm having a problem with the heat in my 1992 900S Convertible and need some guidance....
It's just plain inadequate heat during cold weather, compared to my 1990 900 Sedan which has more than double the miles on it.
There is clearly a difference in the heater hose configuration between the two cars...the difference being this bypass valve arrangement in the 92.
The symptoms are, 1) under normal city or highway driving, heater control on full, and fan on full, there's heat but it is woefully inadequate.
2) In traffic or at idle, it quickly goes from warm to cold.
From reading many entries on this topic, it sounds like I may have a combination thermostat and bypass valve problem. I checked the hoses by feeling how hot they were after my 30 minute highway commute the other day. Hoses all seem hot to the touch, coming from the radiator and the engine block, up to the heater hoses on the engine side of the firewall. (Do the heater cores clog up or go bad? )
Some difference in temp after the T connectors near the firewall. Is the bypass on the engine compartment or passenger compartment of the firewall?
Todd inMA
92 900S CV (113k miles)
90 900 (242k miles)
posted by 168.159.6...
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