HOT lower radiator hose after new WP & Thermo install
#16
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
Quote: "There is a reason lower water hoses are made of a stiff reenforced material while you can get away with using the thinner more flexible hoses on the return line."
Upper and lower hoses are the same thickness and have the same reinforcements.
The upper hose is actually under more stress because it is carrying hotter water back to the radiator. Hotter water is more corrosive over time.
Upper and lower hoses are the same thickness and have the same reinforcements.
The upper hose is actually under more stress because it is carrying hotter water back to the radiator. Hotter water is more corrosive over time.
#17
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Year: 1995
Model: Cherokee
Engine: 2.5L
I did a bit of looking into the temperature indicator/warning (dummy) light - it doesn't come on when I turn the ignition (the battery and oil pressure does) - is it supposed to? I pulled the "instrument cluster) to check the bulb and, unfortunately, that's not the issue. I tried cleaning the connections and checked the fuses under the dash (drivers side) to no avail. All other lights in the cluster (dahsboard, etc) are working properly. Thoughts?
#18
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Year: 2000
Model: Cherokee(XJ)
Engine: Golen 4.6L
For the XJ, only the OEM lower hoses are reinforced, and only because the reinforcement was required for part of the installation process at the factory. Aftermarket lower hoses for the XJ are not reinforced because the reinforcement is not needed unless you install a high-flow water pump.
#19
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
I did a bit of looking into the temperature indicator/warning (dummy) light - it doesn't come on when I turn the ignition (the battery and oil pressure does) - is it supposed to? I pulled the "instrument cluster) to check the bulb and, unfortunately, that's not the issue. I tried cleaning the connections and checked the fuses under the dash (drivers side) to no avail. All other lights in the cluster (dahsboard, etc) are working properly. Thoughts?
#21
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Year: 1995
Model: Cherokee
Engine: 2.5L
Yes, all of the dash lights r supposed to momentarily light up when the motor is started, then turn off after the motor starts and runs a few seconds. It's a dash indicator/bulb check feature. If the bulb is good, it could be bad electrical somewhere between the light and temp sending unit....maybe even the temp sending unit, for that matter.
Also, considering I don't have a temperature gauge (just the dummy light) would I have a temp gauge sending unit (rear of the block on drivers side)? I haven't looked yet, but I'm wondering if I should be looking to determine if that is faulty or if I should be looking at the coolant temperature sending unit (on the thermostat housing)?
Last edited by salinity; 09-01-2014 at 02:51 PM.
#22
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
Switch your non-functioning light with a known good one from your cluster. See if it works then.
If it doesn't, replace the sending unit. It is unlikely, though not impossible, that the problem is between the sending unit and cluster.
If it doesn't, replace the sending unit. It is unlikely, though not impossible, that the problem is between the sending unit and cluster.
#23
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Year: 1995
Model: Cherokee
Engine: 2.5L
Would a bad coolant temperature sensor (the one threaded into the thermostat housing) be a possible cause? I'm not sure which sensor is piped into the dummy light....
Last edited by salinity; 09-01-2014 at 04:42 PM.
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