88AMComanche Posted June 29, 2014 Share Posted June 29, 2014 Hi- Another issue here: Someone bypassed the heater control valve on my comanche 4.0 so here s the layout of my hoses. From water pump to Heatercore Intake , from heatercore OUT to radiator Overflow tank(next to pass hood hinge) From overflow tank to waterpump intake line. here's THE PROBLEM ........ I need a hose to from from Firewall/heatercore to the Overflow bottle which is close to the heatercore line. . its 5/8" hose . try to follow this part ........it comes OUT of firewall about 3 inches,goes UP about 3 inches,then goes LEFT about 3 inches to go into the overflow bottle. - I can't find a hose like this ANYWHERE. .a 5/8 hose that 90s ,goes a few unches then 90s again. - ... SO,reckon I'm stuck using connector fittings? its all because there IS NO heater control valvce thingy that the hoses connect to.it was bypassed long ago. Link to comment Share on other sites More sharing options...
sloride Posted June 29, 2014 Share Posted June 29, 2014 Would something like this help? http://teamcherokee.com/heater-hose-set-4-0-liter-oem-cherokee-comanche-1987-1990/ Link to comment Share on other sites More sharing options...
88AMComanche Posted June 29, 2014 Author Share Posted June 29, 2014 Thanx Comanchefan. I just may have to fall back on that. That "T" pice (center bottom) sure looks handy & very similar to what I need,except it needs to turn to the other way instead of toward the camera. Thanx though,this May work. Link to comment Share on other sites More sharing options...
mvusse Posted July 5, 2014 Share Posted July 5, 2014 Get a long length of hose, make a large loop in it, kind of like turning left three times to go right. Link to comment Share on other sites More sharing options...
Jeep Driver Posted July 5, 2014 Share Posted July 5, 2014 Go to Oreilly or NAPA and ask to go to the back and look through all the preformed hoses, you'll find one. Link to comment Share on other sites More sharing options...
Eagle Posted July 5, 2014 Share Posted July 5, 2014 One more time: That tank on your firewall is not -- repeat NOT -- an overflow tank. It is a part of the pressurized cooling system. The '87 - '90 4.0L MJs do not have any cooling system overflow. They have a closed system. The cap of that tank is the pressure cap. The tank is an expansion tank, and must be filled only to the halfway mark when cold. Link to comment Share on other sites More sharing options...
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