87 Spark Issues
I replaced the ignition coil, wires, plugs, cap (twice), rotor (twice), hall effect assem., and the Spark Control Computer. I have spark coming out of the coil wire and into the distributor, but the coil only sparks once ever 3 or 4 turns of the motor however I don't have spark coming out of the distributor and into the wires which is what I don't understand. I read and did all the tests the service manual said and I couldn't find anything else wrong besides the very last step. It says that "If battery voltage is not present at cavity #1 of the distributor wiring harness connector, (which it is not, meaning the Hall Effect pick-up is good) repair the open in the circuit connected to cavity # 1." So what is this saying? Is there a cut in the wiring harness somewhere between the distributor wiring harness connector and the SCC? I really can't figure this out, and it's been a HUGE headache, so if anyone could help it would be great!
okay here ya go,I own an 87 and had this problem with my truck it was the relays on the left fender behind the window wash resovior you'll find 2 relays there replace them it sounds like your starter relay is bad one of those relays is your starter relay and the other is your start/run relay they are about $12 each at autozone one is part # SR 17 $7.95 at advance auto parts.And the other is$9.24 also at Advance auto parts.Here is another thought are you sure you put the dist back in right? meaning your timing could very well be 180 out
Yea I'm pretty sure I put it on right, because it ran fine when I put the new cap on the first time. I just wasn't sure if somehow the new one had gone bad or I had possibly gotten a deffective cap and this is my reasoning for replacing the cap and rotor a second time. But I appreciate the advice and I'll check the relays and get new ones tomorrow.


