ok i have a 87 bronco efi 302 stock motor that sometimes not all the time turn over but no fire. i have replaced iginition switch at key and on steering column. i have replaced coil, spark wires, plugs, dist cap, condesor, firing module, rotor button, everything but the distribitor that has to do with the firing that i can think of. it geting fuel so its not a fuel problem. ii can hold the plug wire in my hand no fire then all of a sudden my feeling in my teeth are on fire from the shock. it comes and goes like a plague. im to the point to were i cant figure it out and i need help bad so please help before i burn the truck down thanks in advance.
firing problems
- Thread starter tharper82
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Rons beast
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Sounds like a primary wiring problem, and could be as simple as a bad ground.
Do you have a diagram for your engine wiring?
are all the ignition parts you replaced stock and for the correct year?
I'm not doubting you...just had parts guys pull wrong parts for me before and made my life very difficult.
Seabronc
New member
"im to the point to were i cant figure it out and i need help bad so please help before i burn the truck down thanks in advance."
I think you have been there for a long time
/emoticons/[email protected] 2x" width="20" height="20" /> .
Sounds like you have thrown away a lot of perfectly good parts and money :-& . It's time to set back and do some real troubleshooting before you spend the equivalent to the National Budget.
What year truck do you have? Please add your truck vitals to your signature. It helps get the right advice and perhaps the right answer.
Good luck,
I think you have been there for a long time
/emoticons/[email protected] 2x" width="20" height="20" /> .Sounds like you have thrown away a lot of perfectly good parts and money :-& . It's time to set back and do some real troubleshooting before you spend the equivalent to the National Budget.
What year truck do you have? Please add your truck vitals to your signature. It helps get the right advice and perhaps the right answer.
Good luck,
well money is not a issue. ill spend the national budget on this thing to get it fixed already have 7000 or better invested in it now and ill keep going till it is finished. so i just need to fix the problem and continue with the project.
Rons beast
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I've got one of those haynes books but I don't see anything in the trouble shooting part that describes my issue. Like It done it the first day I was back home and now I haven't had the problem again but it might do it at anytime so I don't think it would be a short coming and going like that but it mightr b I don't really no how to check that stuff out.
I've got one of those haynes books but I don't see anything in the trouble shooting part that describes my issue. Like It done it the first day I was back home and now I haven't had the problem again but it might do it at anytime so I don't think it would be a short coming and going like that but it mightr b I don't really no how to check that stuff out.
Rons beast
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It's almost impossible to diagnose problems when they don't exist at the time. If your problem is that intermittent, you may have to wait until it becomes more common.
Try to be aware of the factors that are in place when the problem does pop up, ( temp of the eng., ambient temp, conditions such as rain, heat, heavy driving, lots of traffic, etc...or just after startup....)
I would also go back over each component in a logical order and make sure they were installed properly , with all fasteners snug,etc.
Did you put the silicone grease on the module? (very important) and lastly make sure the inside of the dist. is clean and the air gap is proper.
after checking everything, with luck the problem will not surface again.
Good Luck.
50joe
New member
Dont forget to check the EEC power relay too. relays are good for intermitant problems. Corosion is usually a problem with that too. Should be up under the dash on the driver side according to mitchell on demand.
im having same exact prob. if u find out what it could b please let me know im running out of cash myself got about 3000 in this its also an 89 fullsize but i think it all the same stuff from what u described
ok im haveing same prob. on the tfi module on side of distributor theres a little black diode looking thang still not sure what it is but i pulled mine out and now getting fire but still wont start dont know if it helps but ive done everything u have and this is as close as iv got
