Date: 17 Oct 2002 18:28:32 -0700 From: ychennopsam30.net (Yaofeng) Subject: Re: NO HEAT
"b1zvxe83" <norbsnopsamatico.ca> wrote in message news:<XdZq9.3579$Zv3.530637nopsam20.bellglobal.com>... > 1988 9000T - Cycled the ACC by pressing "AUTO" & "VENT" to recalibrate the > system and to find any error codes however the reading was "0" meaning > nothing wrong. However I am not getting sufficient heat, actually there is > heat but very, very slight and definitely not hot enough for our cold > Canadian winter. > > Next thought was to check the blend door arm by the firewall to see if it's > broken, nope. The arm is fully in tact. > > Anyone out there have any suggestions or ideas as to what's causing the lack > of heat. Old man winter is coming and I'd sure like to get this problem > fixed. > > Thanx in advance, > > Norbert I don't know how cold it is now in Canada and whether it is feasible to use tap water from your garden hose to flush the heater core. If it is, I'd do it first. The coolant hose connections for the heater core are both on the driver side of the engine block. The supply connection is right below the head on the driver side. The return is behind the block on the same side. The return is connected to a metal tubing bihind the block to the passenger side front to the water pump. Disconnect both coolant hoses. Flush the core by connecting the garden hose to the coolant hose. No tighten connection is needed. Do it until clear water comes out from the other side. After that, do a reverse flush. This is a simple way to confirm blockage of the many passage ways of the core is not the culprit. I've never had this problem with either my 900 or 9000. The 900 I used to own did have a bad heater control valve which I replaced, however. I did have the partially blocked heater core in a Camry I used to own which I sloved by flushing. Yaofeng
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