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96 chevy 1500 silverado won't shut down when I turn off ignition


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pseudopilot
New User

May 15, 2017, 7:14 AM

Post #1 of 5 (772 views)
96 chevy 1500 silverado won't shut down when I turn off ignition Sign In

Hello.
New to the forum and I have a dilemma.

I recently did an engine swap for a friend on his 96 chevy 1500 4x4 TBI350, standard trans.
Everything went good but when I was done I had 3 dash lights that stayed on when the ignition key was turned off. It started fine and runs good but when I turn off the ignition it keeps running. I have checked the three ground areas, main on back of the passenger side head, bad and block to frame ground straps and the two 2 wire grounds that connect to the I take bolt front drivers top of motor.
I would think for sure that it was something I had done or not done because the truck started and shut down fine when I pulled it in to swap the engine. But while I was working on the truck my friends son had been playing with the keys and ignition so I'm stumped. Any help?.
thanks


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 15, 2017, 7:35 AM

Post #2 of 5 (764 views)
Re: 96 chevy 1500 silverado won't shut down when I turn off ignition Sign In

Were there any differences at all i the engine hookups? Anything have to be modified? Exact same engine?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



pseudopilot
New User

May 16, 2017, 6:14 PM

Post #3 of 5 (720 views)
Re: 96 chevy 1500 silverado won't shut down when I turn off ignition Sign In

Only difference was that the original engine had a soft plug block heater and the engine I installed does not. So I removed the heater chord, but all other Co nnections were the same. I used the coil from the engine I removed but that engine ran good with a slight knock (#5 rod bearing spun). Does the ignition cut off positive power to the coil or ground the coil to kill the engine?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 16, 2017, 6:22 PM

Post #4 of 5 (714 views)
Re: 96 chevy 1500 silverado won't shut down when I turn off ignition Sign In

All of the ignition and injector power is supplied by fuses that are in turn powered by the ignition switch so you need to take a hard look at the ignition switch.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



pseudopilot
New User

May 16, 2017, 8:30 PM

Post #5 of 5 (709 views)
Re: 96 chevy 1500 silverado won't shut down when I turn off ignition Sign In

Thnx
I'll direct my attention to that.
Much appreciated,!!!






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