bhansen99xj
NAXJA Forum User
- Location
- Beloit, WI
Hi guys.
First post on this forum!
I have an overheating issue and I'm looking for some advice/insight.
Vehicle: 99xj sport 4.0
New: Radiator, thermo, coolant
Symptoms: Rusty sludge coolant even after the flush. Temp @ 210, then suddenly spikes to 250+. Upper rad hose and heater hose is hot, lower rad hose and lower heater hose is cool to the touch. I flushed the heater core separate and it is free of blockages. I have no heat so I obviously have no flow through the heater core. @260+ I eventually fill the reservoir and start dripping out the over flow.
My guesses: Blown head gasket spitting fumes into the coolant system preventing proper flow. -OR- Water pump impellers have rusted away.
What it is not: Heater core, aux fan, clutch fan, rad.
I have not tried another thermo yet but I'm about to.
Anyone have any ideas/insight on this? My reach for help has not been answered very well. I'm an avid xj'er so I promise I'll be around :looney:
First post on this forum!
I have an overheating issue and I'm looking for some advice/insight.
Vehicle: 99xj sport 4.0
New: Radiator, thermo, coolant
Symptoms: Rusty sludge coolant even after the flush. Temp @ 210, then suddenly spikes to 250+. Upper rad hose and heater hose is hot, lower rad hose and lower heater hose is cool to the touch. I flushed the heater core separate and it is free of blockages. I have no heat so I obviously have no flow through the heater core. @260+ I eventually fill the reservoir and start dripping out the over flow.
My guesses: Blown head gasket spitting fumes into the coolant system preventing proper flow. -OR- Water pump impellers have rusted away.
What it is not: Heater core, aux fan, clutch fan, rad.
I have not tried another thermo yet but I'm about to.
Anyone have any ideas/insight on this? My reach for help has not been answered very well. I'm an avid xj'er so I promise I'll be around :looney: