E4od lock up problems
#1
E4od lock up problems
96 f150 351/e4od. Friday I drove it to the track and once I was on the highway I noticed it revving too high. So turns out the converter isnt locking up. I have a 3 way switch set up to either be stock/unlocked/locked and if I put it into the lock position it locks right up but won't lock up in the stock position. Any ideas what could be wrong?
#2
#3
Join Date: Jul 2006
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im with Mark,i like to tackle and rule out the easy things first.another quicky;
or a bad brake switch (BOO) on the brake pedal.
edit,and don;t take for granted your custom lock up switch isn't prone to failure either.may want to bypass this next,hooking up the (what it is,the purple wire with yellow tracer iirrc?) back up directly to rule this out.
or a bad brake switch (BOO) on the brake pedal.
edit,and don;t take for granted your custom lock up switch isn't prone to failure either.may want to bypass this next,hooking up the (what it is,the purple wire with yellow tracer iirrc?) back up directly to rule this out.
#4
#5
Ok I checked the brake lights and they are all working as they should. Also cycled the hazard switch as I read somewhere that is an issue as well. Also noticed when the switch is in the stock position it won't lock up but the od light doesn't flash or throw a trans code. But when I force it to lock up even on the highway it throws a 743 code. So it seems the pcm doesn't want the converter to lock for some reason. I'm lost.
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