poppyseed
NAXJA Forum User
- Location
- Ferndale, WA
Ok so I have a 2000 XJ 4.0L 110k miles hood louvers, and its approx 30 degrees ambient temp outside, (this may come into play). My old water pump was leaking from the weep hole.
I replaced the water pump and stock thermostat with 180 degree thermostat because this past summer I had issues with the jeep running around 220 degrees when wheeling. After replacing the water pump and t-stat I realized the Jeep failed to heat up to operating temp, hovering at only the second "tick" on the temp gauge and I had no heat in the cabin. As the upper rad hose was hot and firm I opened the rad cap while the jeep was running, coolant and air spewed out, although the coolant was cool to the touch.
After this the jeep began to warm up to operating temp, about 180* indicated on the temp gauge. I figure i must have burped out a large air bubble. However i can now remove the rad cap while at operating temp without any pressure or coolant coming out. The coolant is at the top of the radiator with the engine running/warm or cold/off. the overflow tank also always reads full.
Why do I have no cooling system pressurization? Is it possible with 180* t-stat and louvers in the hood my cooling system does not reach "boiling" when the ambient air temp is 30*? Any help is greatly appreciated, thanks guys.
I replaced the water pump and stock thermostat with 180 degree thermostat because this past summer I had issues with the jeep running around 220 degrees when wheeling. After replacing the water pump and t-stat I realized the Jeep failed to heat up to operating temp, hovering at only the second "tick" on the temp gauge and I had no heat in the cabin. As the upper rad hose was hot and firm I opened the rad cap while the jeep was running, coolant and air spewed out, although the coolant was cool to the touch.
After this the jeep began to warm up to operating temp, about 180* indicated on the temp gauge. I figure i must have burped out a large air bubble. However i can now remove the rad cap while at operating temp without any pressure or coolant coming out. The coolant is at the top of the radiator with the engine running/warm or cold/off. the overflow tank also always reads full.
Why do I have no cooling system pressurization? Is it possible with 180* t-stat and louvers in the hood my cooling system does not reach "boiling" when the ambient air temp is 30*? Any help is greatly appreciated, thanks guys.