Heater Control Valve

[klingon20]

I changed it out, now the new one is leaking out of the vacum port.
Is this a historicle problem with Rangers.

Mine specifically is a 1997 with a 2.3

 

[adsm08]

The bypass valve is a common problem, but its common for them to get stuck, not to leak through the diaphragm.

 

[LearjetMinako]

Mine orginal one went bad. The replacement is still working. After 10 years of service, I expect parts to go bad or to leak. You may have just gotten a bad heater control valve.

 

[srteach]

common? yes. With new valves? definitely not normal.
Get that one replaced as defective.

 

[klingon20]

I moved the vacum plunger in and out and got coolant on my hand, hard to believe a new valve less than 3 weeks old is already bad but i have seen it happen before.