Root Moose
NAXJA Forum User
- Location
- ON, Canada
I figured I'd ask before tearing into this...
Got this latest XJ about a month and a half ago. It's a 2000, 4.0/AW4 completely stock.
Jeep has been fine up till now although I noticed that the temp gauge seems a touch hotter than my built XJ. The built one sits at exactly 100˚C indicated (~210˚F). This new one sits a touch higher. Gauge isn't that accurate but I'd say it might be 220-230˚F.
Anyway, in the last day suddenly the temperature gauge will spike into the red in less than a second from the steady state temperature.
If I turn off the Jeep for a moment the gauge returns to normal temperature.
If I leave the Jeep on (but engine off) and watch the temperature gauge it will suddenly drop from overheat to its normal temperature.
Looking under the hood the Jeep doesn't 'feel' like it is running hot. No funky smells and such like you get with a overheated engine. There is no exhaust smell in the coolant overflow bottle. Exhaust is not white.
The cooling system has not been opened since I got the Jeep and I've easily put 6-7 tanks of fuel through it before this started happening.
Screwy thermostat? Temperature gauge sending unit? Radiator cap? Air in the system? Other?
TIA
Got this latest XJ about a month and a half ago. It's a 2000, 4.0/AW4 completely stock.
Jeep has been fine up till now although I noticed that the temp gauge seems a touch hotter than my built XJ. The built one sits at exactly 100˚C indicated (~210˚F). This new one sits a touch higher. Gauge isn't that accurate but I'd say it might be 220-230˚F.
Anyway, in the last day suddenly the temperature gauge will spike into the red in less than a second from the steady state temperature.
If I turn off the Jeep for a moment the gauge returns to normal temperature.
If I leave the Jeep on (but engine off) and watch the temperature gauge it will suddenly drop from overheat to its normal temperature.
Looking under the hood the Jeep doesn't 'feel' like it is running hot. No funky smells and such like you get with a overheated engine. There is no exhaust smell in the coolant overflow bottle. Exhaust is not white.
The cooling system has not been opened since I got the Jeep and I've easily put 6-7 tanks of fuel through it before this started happening.
Screwy thermostat? Temperature gauge sending unit? Radiator cap? Air in the system? Other?
TIA