I have a 88 W100 4x4 with a TBI 318, it just quit running and now will not start, I can jump the ASD relay out and make the fuel pump run and get 12 volts at my injectors but under normal ignition switch operation trying it with a noid light plugged in it doesn't flash, when the switch is first turned on I do hear the fuel pump run for about a second or so but it doesn't ever start...I am not very familiar with this set up I am more of a carb guy, any help grwatly appreciated.

replace the Hall Effect Sensor...

I'll try that and let you know.
Thanks!!

Same thing happened to my Ramcharger. Ran one day, wouldn't start the next. Replaced hall effect and been running fine since.

Well I replaced the hall effect and it still will not start, it sounds like it's going to hit but never does

Usually the hall sensor is the culprit but I've been burned on a double whammy on my 88 with a map and hall effect at same time

Check for codes
Check the fuel pressure- should be 14.5 +/- 1
Check for spark

get back to us

Are you getting spark from the coil?

Power on both sides of the ballast in the run position?

Don't have a ballast

have you checked for codes ?? is your timing off ??

I havent checked codes, it turns over like it always did, it just quit going down the road

I have nothing at the coil

oh oh its really broke...

I think I have a computer that you can have, just pay the freight.. I will look tomorrow..

I would be willing to pay you something more than freight
Thanks

I guess no computer

Been looking but it wont jump up and say here I am..

I understand that

let me look in the majic shed..I may have a 88 5.2 pcm you can have also. I let you know.

Thanks

Have you tried swapping in a known working coil? Might still be an easy fix.