i've also replaced that. i.ve noticed that the trucks computer is not attatched to the side kick panel. could that be a reason or could the computer just be bad since it will spark once and then just stop till i crank it again

 

Just a thought, have you checked to see if the rotor spins when you crank the motor? If it doesn't, then you may have a broken timing belt. This is just a possibility and it's easy to check.

 

its not at the distributor tho. the symptoms are coming straight from the coil. but if timing is off would it cause it to do the same thing?

 

Personally if it were me I would start with the easy stuff first, just because it has a lot of electronics doesn't mean it couldn't be something simple. Check Coil wire Check to see if distributor rotor rotates while cranking engine Inspect cap and rotor Check connections at ignition components, if they look good test with a meter to be sure. If all that is good then you can start checking relays and all the other stuff suggested.

 

okay i've been working on it all day and im still having the same problem iv got power at the coil and igniter still and all fuses and relays have been replaced. ive still got the same problem with it gettin a initial spark when i first start cranking and then it just stops.

 

Since you didn't really replace "all" fuses and relays, which ones did you replace? More importantly, why?

Okay, how do you KNOW this? What you're saying is that one plug fires one time and then none of the plugs fire again as you crank. Is that what you mean to say? How do you know that, given that you can't see the spark gaps?

(The way to know that is with a timing light on each plug wire as you are cranking, but if you did that I sure can't tell from your posting.)

 

Maybe you just haven't replaced enough parts, keep throwing parts at it and who knows you might get lucky.

 

I used a coil tester between the distributor and the coil. the tester is much like a test light only for ignition systems. i pluged it into the coil then connected the other to the distributor. in there is a light which lights up when power flows through it. the issue is when i first start cranking the light does light up but for only 1 second and then is done. and it will repeat this same issue every time i crank. I have bought a new distributor new cap/rotor and wires along with a new coil. i have also tried multiple ignitors. The coil has been tested and is hot the fuses by under the drivers side dash i have replaced the ing. fuse and the engine fuse and the ecu-ig fuse . also under the hood the AM1 and AM2 and the efi fuse and the efi relay i have had the battery tested and it also passed.
im running out of ideas and money. i would like to sell the truck but i would like to atleast get it going. could this issue simply be faulty wiring?

 

im having the same problem with my 91. could it possibly be the pick up coil in the distributer?

 

First off are you getting spark at the coil (coil to distributor)? Test by pulling the coil wire off of the distributor and holding it close to the block (wear gloves and be careful. It's high voltage.) Have a buddy crank the engine. Should see sparks arc into block.