1987 chevy r20 no spark or fuel

[bmfp407]

Hey everyone I am having a problem with my 1987 r20 it is completely stock
with a tbi 350. I dove it home from work tonight and with I got back in it
to go the store it will not start. It cranks over but It hasno fuel and no spark.
I checked all the fuses and all the fuse-able links. All the other power accessories work. COuld it be the coil pack I read that the coil control
the spark and pulse the injectors??? I dont know please help

Thanks

 

[towjoe]

I'd start with the modual under the distributer cap. I had a 87 while back that kept burning them out and it would loose spark and fuel when they go out.

 

[bmfp407]

is there a way to test that or do I just need to pick up a new one

 

[towjoe]

Auto zoo supposably can test them. From my experience in owning square body Chevys I always carry a spare modual in the glovebox and a nut driver to change them. I have had to change more of them over the years than flat tires on my trucks on the side of the road. That goes for the tbi motors and the old school hei ones

 

[bmfp407]

I will pick one up tomorrow thanks for the help, I will keep you posted

 

[towjoe]

You did check for power to coil to start with and all connections were tight right?

 

[bmfp407]

Yes I have power

 

[towjoe]

90% chance it's modual then. There only $25 or so if I remember right

 

[Jims86]

Did you scan for a trouble code? Does the check engine light illuminate when you turn the key to on?

 

[bmfp407]

Change the computer and the ignition control module still no spark or fuel I guess I'll try the coil, yes the check engine light illuminates when I turn the key on

 

[towjoe]

Interesting. did you look at the wires on the pickup coil on the inside of the distributer while you were there?

 

[bmfp407]

Would that affect fuel as well

 

[towjoe]

If the wires are broke or shorted out off the pickup coil yes. Have you tryed the scanner on it yet?

 

[87sierra]

i had a similar problem like that and i changed the ignition module, tps sensor, electronic spark control module, coil, cap and rotor, spark plug wires and spark plugs, also make sure your distributor hold down is tight and the cap does not spin easily that is how i fixed mine

 

[Jims86]

Change the computer and the ignition control module still no spark or fuel I guess I'll try the coil, yes the check engine light illuminates when I turn the key on

Whoa there,high speed! that was a lot of money you just spent!
Before you spend any more, Check the fuses again...I know you said you checked them, but specifically, you need to check the Gauge/idle,Ecm, ECM B or 2(you may not have it) and the Ignition fuses.

And then you need to make sure you are getting power to the pink wire on the coil, which is next to a terminated tan or white wire. If you are getting no power there, the ignition module will not get power, and you will not get spark or fuel, because you are getting no pulse from the Ignition Module.
And no power at the coil wire could be a bad ignition switch.