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hot headed!!!!

ok so I'm new here and if my thread is wrong please correct me. I have an 1989 f350 4x4 460 c6 auto 4.10 locker front and rear. replaced both tanks and pumps and new fuel filter. the problem is this. when I get in it idles very rough (think nasty cammed pulling truck). but it runs circles around my uncles 88 that is exactly the same truck but white. I'm thinking the paint isn't related to issue. after a drive to town around 30 min I get out and if I let it sit for 10 to 15 min all it wants to do is crank and I get a little blubber. if it sits 30 min it fires right up and down the road I go. getting very annoying! if anyone has any ideas where to look next please help.
 

smokey

Hitech hillbilly
Staff member
I'm going to guess the TFI module is going bad.
the tfi has a run and a start side.
when they break down from heat they won't start till cooled down in 30 minutes.
 

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