[hr]frist i need to know if the 87 has a crank angle sensor and how do ya test to the scc to confirm it is in working condition ?

 

You're gonna need a repair manual for the wiring diagrams (unless you feel like looking them up on line). If your '87 has electronic spark control (should), it will have a crank angle sensor.

But first things first. You can test for coil power and signal with a test light. For power, hook the light to ground and then probe the coil + term. with key on. If it lights, you have power. To check for signal at the coil, hook the test light to battery + and then touch to the coil - while cranking. If it flashes, signal is OK and the no spark is a bad coil. If the coil doesn't have power or signal, that's when you need to go after the SCC and signal. To actually test the crank angle sensor is when you'll need a scope (not a cheap piece of equipment, with basic 2 channel units running ~$1,200 and up)

 

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[hr][align=left]just where do you find a wiring diagram online for this model truck, i mean where do i look using a search engine to locate it? i have looked but there is no electronic spark control.[/align][/align]

 

i have tried,checked all of these and replaced everything and the only other thing that i can think of is that it may be is a fuseable link but i don't know where they are located does anyone know about where to look for them at.

 

the fusible links are located by the left quarter panel by the fire wall.

 

try the computer. My 95 5.2 did the same and after trying everything that I could think of I replaed the computer and no troubles since . good Luck

 

i recently changed it out and it still will not crank

 

if the vehicle has power but will not turn over then it could be a starter issue. Tap the starter with a hammer and see if it cranks the motor over.

 

it has power and will turn over but will not crank and run.

 

are there any item or part that you can identify around the fuseable link so that i can start in the proper location?