Join Date: Apr 1999
Location: Justin,Texas, Republic of TEXAS (USA)
Feedback Score: 0 reviews
The high side pressure needs to be checked. Usually these relief valves, when equipped, has opening around or a bit above 400psi. The fan clutch needs to be checked and check the air path through the cooling stack for bugs and debris.
The programming runs fan a bit when stopped and when road speed is low. If the high pressure switch on high side line closes fan operating duty cycle is increased for more fan speed. The fan operation should have a code if codes are read out if that is the problem. If the condenser is blocked then fan could work fine and still have a/c high press go too high and relief do a dump.
The engine would be running hotter than normal but you'd not know due to the "we're scare to tell the truth" gauge system Ford has used for a coupe of decades (not that you might be able to tell that I have an issue with gauges that are not much more good than a warning light...).
2006 F450 CC Hauler bed 4x2 6.0 L 6.0 auto, Lariat, 4.30 r/a, SCT, 4in exh. 103K New heads to repair diesel in coolant, 136K.
2006 F350 Lariat CC Dually 4X2, 6.0 auto 4.10 LS, SCT, airbags, 4 in. exh. 147K Rebuilt engine to repair damage from burned piston. One head to fix fuel in oil problem.
2002 F350 CC DRW flatbed (originally pickup bedded) rebuilt & upgraded 4R100
36 feet on the floor Elite/Outlaw LQ horse trailer.
35+5 foot double tandem axle flatbed trailer.
36 foot double tandem axle flatbed trailer
36 foot Platinum 6 horse LQ, side load, full width back tack
2003 EB Expedition 164K (no engine repairs, gas burners are the new longevity leaders)
2004 Volvo V70R AWD-high miler in fleet, 241K (no engine repairs)
2007 BMW 550i 6MT 146K, Stuff breaking all the time that would last twice as long on a Kia or Hyundai, sad. Drives great though.
Suzuki Carry KEI truck, 660cc 3 cyl DOHC EFI 4X4 5 speed RHD. Sort of a Smart Car sized pickup. Eats Gators and Mules for lunch.