wrenchinjoe
New Member
- Joined
- Dec 12, 2012
- Messages
- 2
- Reaction score
- 0
- Points
- 0
- Location
- Knoxville, TN
- Vehicle Year
- 1989
- Make / Model
- Ford
- Engine Size
- 2.3 liter
- Transmission
- Manual
I have an 89 Ranger XLT with the 2.3, and the notorious cold running issue. The temp gauge never gets to the Normal range. I have replaced the temp sending unit (a while ago), water pump, thermostat and hoses (recently while replacing the timing belt & crank seal), and still have the cold running problem.
I have looked carefully and my tstat housing does not appear to have any flat spots or detents that would allow the tstat to "lock" in to place as has been advised.
To eliminate the possibility of air pockets in the cooling system, I have read that drilling a 1/16" hole in the thermostat can help bleed air from the system. I have a new 192* motorcraft tstat and have boiled it to make sure it works.
Question 1: should I drill it? (If this model has an air bypass valve, then a hole is unnecessary, but I don't think it has a bypass.)
Question 2: if so, where? The tstat (RT1140) is pretty small and the gasket takes up the space where you would typically drill such a hole. Is is ok to drill that small hole in the tstat diaphram?
Thanks.
I have looked carefully and my tstat housing does not appear to have any flat spots or detents that would allow the tstat to "lock" in to place as has been advised.
To eliminate the possibility of air pockets in the cooling system, I have read that drilling a 1/16" hole in the thermostat can help bleed air from the system. I have a new 192* motorcraft tstat and have boiled it to make sure it works.
Question 1: should I drill it? (If this model has an air bypass valve, then a hole is unnecessary, but I don't think it has a bypass.)
Question 2: if so, where? The tstat (RT1140) is pretty small and the gasket takes up the space where you would typically drill such a hole. Is is ok to drill that small hole in the tstat diaphram?
Thanks.
Last edited: