Question about 2002 Ford F350 Super Duty DRW Reg. Cab
Truck has blown 2 solenoid packs in the auto transmission. I normally pull minimum of 20000 lb gooseneck. Is leaving the transmission in overdrive the problem
YES! The owners manual states explicitly that "O/D Off" should be engaged whenever you are towing, I always ignored it for towing under 3000 lbs. The only way I would try it with our 4R100's is with a 4-5 plate Torque Converter Clutch and a Wood/IPT/BCS/Banks rebuilt unit running a separate cooler. The problem originated when Ford shifted to a Pulse Width Modulated (not just on/off) Torque Converter Clutch solenoid for "smoother" shifting. The increased slip in these clutches resulted in faster wear and higher heat levels... and blown solenoid packs. Another $150 down.
PS. You will not see any change in the tranny temp gage in the dash until the temp is well over 230F... too hot for Mercon! Get an aftermarket gage pod to keep an eye on things.
Posted on Nov 19, 2008
Yes if you are going over hills on a daily If you have upgrades ie chiped you are putting more power to the wheels but first it goes through the trans you might want to put an aftermarket trans cooler to be safe. If you are in the city keep it out of O/D but on the highway it shouldn't hurt it. I put 20000 in the bed of mine and it pulls fine
Posted on Oct 22, 2008
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Posted on Jan 02, 2017
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