LS Swap Crank No Start What Your Mistake is

Just finished your Ls swap and went to crank the motor over and it won't start ? this video will give you a couple things to check and most likely what your issue is when it comes to not starting. The first thing i wanted to check is to make sure I had ground at the coil pack, not having a ground will make sure the coils don't fire. The next thing I checked is to make sure the computer switched power was indeed run start on and just not ignition on. Most people make the mistake as so did I. With just Ignition on when the motor is cranking there is no power to the switch relay and this is why your ls won't start up.

#lsswap #cranknostart #lsproblems

[WillHorne]

Man everytime I needed help with my TJ ls swap, I'd type it into google. You were always the number 1 solution. All the way to the end. Thank You for taking the time to do these videos.

[Blackgreen]

Damn you good brother I have watched 1000 videos maybe 20 literally to figure out this situation and I paid attention to yours and detail and fix my problem. God told me come back to your page lol

[oldcarguy]

What pin needed power and what pin did you tap into? Thanks

[ThirstySpoon]

Thanks for posting this video. It totally fixed me no start/spark problem.

[jamesrichard]

It got my LS swap started as soon as I grounded that wire. Thanks for the help

[parkerboggess]

what wire did you plug the tester into?

[johnnygarcia]

Thank you for your help I noticed on mine the computer needed to be grounded I bought car and computer was underneath the seat so the gas pump and was not getting spark as well I noticed when I would move computer the relays would make a clicking sound so I put a ground wire on computer and hold it down then I had my son start car then it started right up hopefully this helps someone else out Everyone Have a Great Day

[josearagon]

What pin on computer needs the juice while cranking and where did you get it from you diddnt show that mines cranks no start lq9

[jameerchavis]

Are you DBC red/blue connector if so what pin is that on the pcm?

[donaldthieleman]

Nice. Gonna try this weekend. Thanks 🙏

[Fatlouey]

Hi: I have the same problem. 6.2 LS swap with new harness. It did start a few times before I had the fuel and transmission lines hooked up. Then I had no spark. Grounds are good. No idea where to go from here. I'd appreciate any help. Thanks

[lukeeelube]

Ya had the same issue in my Malibu glad someone is making this video cheers to you buddy

[enoughofthemasksalready]

I have no spark... I do have power at coil packs.. kinda stuck at tg moment.. oh and that hot wore while cranking .. I hooked up for the moment straight to battery.

[snowman]

by chance do you know how i would find a switch power on my 1988 chevy caprice?

[billlangdon]

Good work trouble shooting that issue. I can't wait to see it running down the road.

[isaacgreen]

Hey what’s up buddy how you doing I got a 87 Camaro Third GEN I did an LS swap in and I got crank no start no power at the coil packs or injectors and no spark I got feel pressure coming out the rails and I just don’t know where I hook up my red wire for my new fees box from my stand hardness too

[JeremiahIsrealk]

I’ve got a 99 suburban really wish u live her in Texas but I suck at wiring I’m having same issues

[billycooper]

How do you get switch power to the relay?

[milbrooke]

I have a similar issue…crank, no start…LS1 (going in a 91 Camaro RS). I checked spark and have spark on ONLY cylinder #1! Any ideas? All plugs, wires, coils, and injectors are brand new. Thank you.

[Romi.Frentescu]

I am getting power and ground to literally everything but my injectors my injectors have power but no ground. And vats is deleted. Any idea?