yota-tota

I was adding some lights to my rig by taking 12volts from the positive block that is beside the coil on my 91, when i was tighting up the bolt that holds the wires i touch my wrench off the fender which sparked pretty big which made me let go the wrench and it touched off the top of the coil and sparked again.

Now the truck wont start, it work fine before litterly 5 mins later it wouldnt. All the fuses under the hood and kick pannel are good, i tested the coil for resistance and the secondary resistance reading is in spec but measuring it off the two terminals on the front gave me 1.1ohms and it's supposed to be .5 to .7ohms. Plus in the manual it says that if the coil or the igniter ground out they could be damged. I really need some help here as this is my daily driver and i need to get to work monday.


Ok I copied that from another forum, since then i've replaced the coil and igniter from a running truck, and tried and working ECU and i still have no spark from the coil. I checked the pickup in the Distributor and its good, I think all the fuses are good, the large 30 amp ones in the fuse box under the hood look un-broken. Could it be the "head" relay the red one in the fuse box under the hood, how would i check that?

I'm starting to get really pissed off here as i'ver pretty much changed or check everything that it could be......i know my dis cap and rotor are a bit worn but it should still spark right off the coil wouldn't it? I need some help and suggestions for sure!!

TNRabbit

Well, it's going to happen anyway, so:

WHY THE H*LL WEREN'T YOU TAPPING DIRECTLY FROM THE FUSE PANEL TO INSTALL LIGHTS?!??!?

OK, now that's done....

There's no telling what else you fried when you grounded out the coil. The only thing to do is go from that point backward, checking the entire circuit. Sorry, don't any further wisdom to impart....good luck.

yota-tota

Ya i know it was a stupid move, i was in a rush and wasn't thinking. Like i said as far i know everything is good and checks out, i still have to check the open curcuit relay but i'm sure that was nothing to do with spark.

Maybe the ignition switch is burt? But i still have all the dash lights when the key is on, power at the coil as well.

Like is there any hidden fuseable links or somthing i'm missing?

yota-tota

BUMP!!!

Anyways pulled the codes and got the RPM Signal one which is No signal from "Ne(distributor) and G(ground?) to the ECU". By looking at my circuit drawing from the FSM the Ne wire comes off the lgniter/harness plug to the ECU, when i checked that wire with the key ON i have power there.....maybe i dont have a good enough ground for the distributor. Can i add a jumper to ground on the distributor wire?

waskillywabbit

iTrader: (-1)

Check all the fuses, in cab and engine bay.

yota-tota

did that a weekago, they 're all good

wheatus

did you test the fuses or did you just do a visual check? i bet next time you unhook the battery.