84 b2 wont run

[509lifted]

ok so i have a 2.8l v6 and it wont run for more than a minute. i have changed cap and rotor and spark plugs and it still does it, then at times it will run good for ten mins and then just cut out as im driving down the road and when i go to start it back up it backfires after it turns over once or twice. then if i wait twenty mins it will start back up and run great for a few mins again what could it be.

 

[1984broncoduce]

just go ahead and duraspark it, it makes it a lot simpler, check the tec library for the in depth instructions

 

[martin]

Sounds like a bad tfi module.

 

[stegomon]

just go ahead and duraspark it, it makes it a lot simpler, check the tec library for the in depth instructions

^^^^ what he said:icon_thumby:

 

[509lifted]

so u guys think its the tfi. i cant duraspark it yet cause i dont have money

 

[1984broncoduce]

yes, i would try the tfi, and if that doesn't work look for exposed wires, thats what happened to mine

 

[509lifted]

ok i will pick up a tfi i tomorrow and what tipe of exposed wirel like ones on the motor or could something in the wiring harnes behind the dash cause this sorry i just wanna learn i love working on trucks and im soon to be going to college for it plus i love these little things they go anywhere stock my buddy has a 84 chevy and he gets pissed when i lose him in the hills cause he cant fit between the trees i had just gone thru haha

 

[1984broncoduce]

i would check under the hood 1st, after all the years some of the wires are bound to lose their insulation, mine was the power wire to the coil

 

[509lifted]

well changed the tfi and it runs like a dream the tfi was so burnt up it didnt have any of that heat gel on it that u are suppose to put on so that might have been the cause. thanks guys for the help

 

[1984broncoduce]

glad to hear it man