little to no heat
#1
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Model: Cherokee
little to no heat
I know there's a thread for this but it's pretty old, so I figured I start a new one with the Temps dropping. I'm thinking I have a vaccuum issue somewhere because I only get air flow from the defroster. But that air is also warm at best and far from hot. I found what I think are the heater hoses and followed one coming out of the top of the water pump to a t-intersection with a cap. Continue following that to a 4 way intersection down into the firewall. Followed the return to the same 4 way intersection which then continued on back to the water pump. I put a garden hose to both hoses and both times I pushed antifreeze out of the top of the water pump and no water out of the other hose. Really confused here. And any help would be nice. Any insight on what this inintersections are and what they are for would be great, I have a picture but I'm not sure how to upload it. Thanks guys.
#2
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
Hot coolant flows from the t-stat cover on the head, to/thru the heater core under the dash, then returns to the water pump on the block. This coolant flow "loop" is the bypass loop. U may have what's called a heater control valve between the motor and heater core. It is known for causing leaks and heater performance problems. Lots of folks have eliminated it......the factory eliminated it on '97 up XJs.
#4
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
I know there's a thread for this but it's pretty old, so I figured I start a new one with the Temps dropping. I'm thinking I have a vaccuum issue somewhere because I only get air flow from the defroster. But that air is also warm at best and far from hot. I found what I think are the heater hoses and followed one coming out of the top of the water pump to a t-intersection with a cap. Continue following that to a 4 way intersection down into the firewall. Followed the return to the same 4 way intersection which then continued on back to the water pump. I put a garden hose to both hoses and both times I pushed antifreeze out of the top of the water pump and no water out of the other hose. Really confused here. And any help would be nice. Any insight on what this inintersections are and what they are for would be great, I have a picture but I'm not sure how to upload it. Thanks guys.
#6
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Except we don't know what year he/she has, do we?
#7
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Year: 1996
Model: Cherokee
Engine: 4.0
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#10
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Year: 1990
Model: Cherokee (XJ)
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But, HO and Renix have different hose configurations and they can both have HCVs.
I vote for a software change on CF that allows no posting without signature filled out with at least year!!
#12
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Year: 1990
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#14
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
So as long as the configuration of the bottle plumbing is kept intact, the HCV can be eliminated using 5/8" and 3/4" heater hoses in the proper lengths, right?
#15
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0