G. Mann
Full Access Member
Ok.. got a "new" truck. 1987 F-250 XLT HD 4x4 SRW. 6.9 engine, T19 4 speed trans [not sure which transfer case it has yet]. It has the extended cab, long bed.
It has an 8 ft cab over camper. [no overhang out the back, only bed length. Cab over part fits the extended cab.
Just rebuilt the front end, brakes, etc etc.. all the items the previous owners neglected. Went up the mountains for a test drive [about 300 miles, all uphill]. On the first long pull, heated up to point of blowing fluid out the overflow fill tank and making steam.
Cooled it down. Added water, drove on. As the drive continued, the temp would go to to high.. then it would quickly cool down... then overheat again.. then quickly cool down..
Question: Is this a classic case of the wrong thermostat? Did Autozone do one again?
Radiator looks clean, cooling fluid looks not contaminated, and when it finally starts to cool, it works like an IDI radiator should.
Comments and helpful hints welcome please. Before I start throwing $$$$$ at it till it's fixed.
It has an 8 ft cab over camper. [no overhang out the back, only bed length. Cab over part fits the extended cab.
Just rebuilt the front end, brakes, etc etc.. all the items the previous owners neglected. Went up the mountains for a test drive [about 300 miles, all uphill]. On the first long pull, heated up to point of blowing fluid out the overflow fill tank and making steam.
Cooled it down. Added water, drove on. As the drive continued, the temp would go to to high.. then it would quickly cool down... then overheat again.. then quickly cool down..
Question: Is this a classic case of the wrong thermostat? Did Autozone do one again?
Radiator looks clean, cooling fluid looks not contaminated, and when it finally starts to cool, it works like an IDI radiator should.
Comments and helpful hints welcome please. Before I start throwing $$$$$ at it till it's fixed.