Crank and no start no fire from coil

[shane333]

No fire from coil I can take a ground wire and touch it to the signal wire at the pcm and it tries to start thats the only way it will try to start 1999 tahoe

 

[OR VietVet]

Welcome to the forum.
Check the cap and rotor for the well known problems they have and are you checking "fire"/"spark" at the wire to cap or wire to coil? Remove the cap and rotor and look at the pickup coil wires to see they are all still intact. sometimes those wires can break over time. If any of them are broken, just get a good quality reman distributor. You may also have a failed ignition module.

 

[shane333]

Welcome to the forum.
Check the cap and rotor for the well known problems they have and are you checking "fire"/"spark" at the wire to cap or wire to coil? Remove the cap and rotor and look at the pickup coil wires to see they are all still intact. sometimes those wires can break over time. If any of them are broken, just get a good quality reman distributor. You may also have a failed ignition module.

No fire at coil I can ground the signal wire at the pcm and it will start

 

[exp500]

Check engine Ground Wires, at Battery and firewall. Add a ground to PCM case.

 

[OR VietVet]

Dang grounds. Still check at pickup coil and module plug ins.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

 

[GTRhino24]

I had this issue when I replaced the intake gasket a while back. Turned over but no injector pulse. I was leaning over to check my connections on the distributor and I heard the injectors fire. What? I had placed my hand on the coil to brace myself. Something about the pins on the plugs to the coil were causing it to lose contact. If I wiggled the plugs with the ignition on, I could make the injectors fire. Bent the pins and fixed it.

 

[shane333]

Welcome to the forum.
Check the cap and rotor for the well known problems they have and are you checking "fire"/"spark" at the wire to cap or wire to coil? Remove the cap and rotor and look at the pickup coil wires to see they are all still intact. sometimes those wires can break over time. If any of them are broken, just get a good quality reman distributor. You may also have

I had this issue when I replaced the intake gasket a while back. Turned over but no injector pulse. I was leaning over to check my connections on the distributor and I heard the injectors fire. What? I had placed my hand on the coil to brace myself. Something about the pins on the plugs to the coil were causing it to lose contact. If I wiggled the plugs with the ignition on, I could make the injectors fire. Bent the pins and fixed it.

Via update it was my crank shaft sensor got 3 bad ones before I got one that was good thanks for the help

 

[Eman85]

What brand sensors were you buying? Is the good one the same Brand?, if so I'd be worried about it.

 

[shane333]

What brand sensors were you buying? Is the good one the same Brand?, if so I'd be worried about it.

Standard brand and the good one is acdelco