Thread: 87 560 SEL Monovalve issues
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  #5  
Old 11-19-2018, 11:34 PM
Frank Reiner Frank Reiner is offline
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Join Date: Feb 2011
Location: Modesto CA
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Quote:
Originally Posted by Diseasel300 View Post
The MTC/Aftermarket cartridges are also well known for being junk. They close too easily and will stay shut even if the controller is not calling for heat. It is often suggested to transplant the rubber from the MTC aftermarket cartridge onto an OEM core.

If the controller is not calling for heat, the valve should stay shut!
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