Date: Sat, 19 Oct 2002 10:38:55 +0100 From: "David Wilson" <david.wilsonnopsam.pipex.com> Subject: Re: NO HEAT
.....and also check the hoses to the heater matrix - when they get a bit ancient, they sometimes get soft inside and collapsre, restricting the hot water flow. Make sure that after a good run they're hot all the way along. David. "Yaofeng" <ychennopsam30.net> wrote in message news:e89d1e3e.0210171728.78ebacnopsaming.google.com... > "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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