Join Date: Jul 2009
Location: Siler City, NC
Thanked 574 Times in 451 Posts
I am running a 1987 big came iv low flow cooling and is currently giving me a headache. .Its overheating whenever it exceeds 40km/hr laden or unladen.Have changed water pump,locked the clutch fan to engine speed,redone radiator and got thermostats removed by the mechanic and never replaced.Now the truck is overheating above 40km/hr.what could be wrong???
Not sure what you mean about 'never replaced".....did he replace them or what?
I would put money on the baffle being broken in the bottom of the radiator. There's a small baffle that the low-flow system uses...that's known to come loose and cause heating problems. Ask a reputable truck radiator shop.
2005 250 Super Duty Crew. White and Grey. ARP studs, EGR Delete, and SCT from Vivian. CCV re-route, and 4" Magnaflow turbo back.
Other trucks:1980 KW Ext hood, 1982 Kenworth Cabover Aerodyne (BJ and the Bear) 2000 and 2003 Kenworth W900's. 2003 Pete EXHD. All Caterpillar Power. My 2003 has an MBN I converted to 6NZ. Early 550 file, 211-3025 squirts. 800 cam. Acert twins via custom mount. ARP head bolts.
Transporter and Operator of a Bauer Built Championship Unlimited Tractor Pulling Sled for the United Pullers of the Carolinas, Region IV affiliate of the National Tractor Pullers Association (NTPA), and damn proud of it!!!!