Strobes

My dad and I just swapped in a 98 LS1 into a 98 previously v6 bird. We thought everything was good to go until we tested the coils on the passenger side and the whole side seems to not be getting any spark?

Could it be just a blown fuse? Bad ECM? Your thoughts? This seems to be our last major hiccup and I just want it on the road!

darknessxyz

iTrader: (22)

From what I know, when you swap a V8 into a V6 F-body, you'll need to replace the WHOLE wiring system. That includes the engine wiring harness and body wiring harness. Technically, they're two different car. If you've V8 engine harness and PCM, then I guess you guys just missing something didn't hook up right.

Strobes

Yeah we have all that hooked up from the same engine...we're starting to think it's a bad computer. It couldn't be just all 4 coils went bad on that side, although I wish it were that easy

darknessxyz

iTrader: (22)

Just swap one of the non-working coil to the working side and see what happen. It could be possible that one bank all coils doesn't work due to wiring problem. But all coils fail at the same time is rare.

Darkman

iTrader: (2)

Each bank of ignition coils has a separate ground. Double check the grounds. (I do not know about your application but on an LS6 they are on the back of each cylinder head).

crainholio

iTrader: (2)

And to add to Darkman's point, each bank of coils/injectors has a separate 12VDC ignition-switched fused feed in the factory wiring diagram.

After you've confirmed the grounds are firmly attached, start at your two fuses w/ a test light or meter and work your way up to the coil connector.

TurbopigB4C

iTrader: (5)

You just need to find what the four that are not working have in common on the wiring diagram. Missing and bad grounds can cause havoc.

KILLER-LS1

iTrader: (18)

you need to add a 12v ignition wire to the other bank. thats your problem... I swapped an LS1 into my friends camaro and we had to do that. its mandatory that you do this when making the LS1 swap

TurbopigB4C

iTrader: (5)

Makes sense because of how the coil packs plug in. It has one big connector with four wires and then has a harness going into each coil.

Strobes

Thanks all for your input. Would anyone be able to post a schematic of the ignition system including the PCM ? It's a distributorless system that is NOT in the Chiltons guide.

chrisfrost

iTrader: (8)

Hey , Autozones website should have the wiring diagrams that You need for free . Just click add vehicle then vehicle repair manuals then wiring diagrams. If they don't have it message Me back and I'll see if I can't post My truck diagram which should be basically the same as the Camaro as far as the ignition circuit is concerned . Good luck .

Strobes

No luck- they had a link for distributorless, but no picture- like a dead link...
I'd appreciate your trouble if you can post yours...thx

TurbopigB4C

iTrader: (5)

Talk with a service writer / manager at a local dealership and ask nicely for the wiring diagram off SI. Lots of dealerships will do it so that they can hope to get your business for something else. I did it for a few customers at the last dealership I worked at.

Strobes

The ignition wire that Killer-LS1 mentioned that was mandatory...where does it come from and where does it connect?

Darkman

iTrader: (2)

These are for an LS6.