BogeyJH Posted March 25, 2007 Share Posted March 25, 2007 I have a problem with my new-to-me 1994 LS400. :( Please take a look at these images (click image for larger view). I don't know what this part is called, nor its function. There is a cable and a hose running from the bottom of the part into the firewall. There is also a hose running from the part off the driver side and curving down behind the engine. Anybody know what this is and/or what might be involved in repairing it? I can probably do it myself if it is fairly straightforward and doesn't require any specialty tools. Quote Link to comment Share on other sites More sharing options...
CUMan Posted March 26, 2007 Share Posted March 26, 2007 That's the control that allows heated coolant to enter your car's heating system, thereby allowing the HVAC's fan to distribute heat inside the car. The stiff wire attached to the passenger side of the control activates it when the system calls for heat. It looks like you have a coolant leak in the control. The red material is dried coolant. This is a fairly easy item to replace. Quote Link to comment Share on other sites More sharing options...
BogeyJH Posted March 26, 2007 Author Share Posted March 26, 2007 I got the OEM part number for the heater control valve (8724050010) from the local Lexus dealer and called a local Toyota dealer for a cross-referenced part number. He said no-go on the cross. It's a Lexus only part number. From a dealer online, the OEM part will run $66.86 vs. the local parts counter price of $85.41. I figure I'll save a few bucks even with the shipping cost, and no sales tax to boot. Thanks for the info! Quote Link to comment Share on other sites More sharing options...
BogeyJH Posted May 8, 2007 Author Share Posted May 8, 2007 I replaced the heater control valve last night, but the cable that actuates it doesn't move when the temperature control in the cabin is adjusted. See further discussion here. Quote Link to comment Share on other sites More sharing options...
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