Biernuts
NAXJA Forum User
- Location
- Coeur d'Alene, Idaho
89 4.0 closed system.
Engine recently bought back to life somewhat after sitting for 2.5 yrs.
It's a closed system and aftermarket temp gauge is suspect (gets up to and pegs at 240 very quickly). Bottle and cap appear OK.
Once I start it cold and idle/drive around, it runs OK for 5-10 minutes. Once it gets to the 240+ mark and sticks, it starts to run very poorly, sputters, wants to die.
Would high engine temps cause such a poor running condition so quickly?
How to I tell it's really over heating in a closed system with no boiling?
Also, I keep reading about fan clutches but the fan appears to rotate in realation to engine speed as if it's a direct drive.
Engine recently bought back to life somewhat after sitting for 2.5 yrs.
It's a closed system and aftermarket temp gauge is suspect (gets up to and pegs at 240 very quickly). Bottle and cap appear OK.
Once I start it cold and idle/drive around, it runs OK for 5-10 minutes. Once it gets to the 240+ mark and sticks, it starts to run very poorly, sputters, wants to die.
Would high engine temps cause such a poor running condition so quickly?
How to I tell it's really over heating in a closed system with no boiling?
Also, I keep reading about fan clutches but the fan appears to rotate in realation to engine speed as if it's a direct drive.