| Author |
Message |
    
Brett
| | Posted on Sunday, December 08, 2002 - 01:33 am: | 
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Hi All, the temp guage in my 94es 3.9 v8 discovery has developed this habit of sitting on normal operating position and then jumping breifly up to 3/4 or higher and then moments later it will be back on 1/2 (normal).I was thinking maybe the sender unit may be playing up as when i pull over and check the engine nothing seems hot.My other theory was that maybe the new thermostat i installed was sticking occasionally??.Very un-nerving to drive while it is like this. any feed back appreciated. |
Pugsly (Pugsly)
| | Posted on Sunday, December 08, 2002 - 01:36 am: |
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Does it do it just once or multiple times? If the thermo is sticking, it might take a while to open but once it is open should stay that way.
If it is happening multiple times while driving down the road (without stopping to cool down), I would be cleaning my electrical connections on the gauge. Pull of the connectors, spray a little contact cleaner, see if that fixes it. |
GregH
| | Posted on Sunday, December 08, 2002 - 03:59 am: |
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Sounds suspiciously like sender to me. Mine would do the same thing and if ignored eventually would go into red zone-all the while the top rad hose was cool to touch.
I keep an extra brand new one around for just this reason. It allows me to rule it out before looking at thermostat.
Good luck- |
tomfransen
| | Posted on Sunday, December 08, 2002 - 11:46 am: |
|
My 94 started doing the same thing around 90K and it kept getting worse until the vehical would overheat when it was idiling.
I had the radiator removed and rodded out and the problem dissappper. It was $150 to have it done and now I have 130k on and the temp is perfect. |
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