No spark

[malibuowner]

2001 response. 5.7 Indmar monsoon

bypassed kill switch years ago. Replaced coil, cap and rotor. Checked fuses  

Driving at approximately 30 mph and boat just died. Won’t start now. 

What am I missing?

[justgary]

Check your kill switch bypass job? 

[tvano]

check NO Start Troubleshooting pinned on Maintenance, Tech Info & Troubleshooting tab.

[malibuowner]

Double checked the kill switch. Also read through the NO Start thread but will read it again. Just hoping for something I missed. Maybe a hidden relay or something like that. 

[ahopkins22LSV]

24 minutes ago, tvano said:

check NO Start Troubleshooting pinned on Maintenance, Tech Info & Troubleshooting tab.

 

[blk93jeepzj]

Mine did that this summer too, ended up being the ECM relay.  The week prior the Fuel pump relay went bad.   Check that the 3 relays are still good, Fuel pump, starter, and ECM.  If it's cranking over then the starter relay is still good, if you hear the fuel pump whine at key up it's still good.  Could be the ECM relay then.  Swap them around and see if the symptoms change as you move them.

[malibuowner]

Swapped all the relays. Cannon connector was inspected and looks good. Still no spark. 🤬

Edited September 18, 2019 by malibuowner

[JasonK]

If no spark or weak spark, replace your dist. cap again if it's like my 06 cap. The cap is a known problem, bad design. I've encountered it more on Suburbans.

[justgary]

16 minutes ago, malibuowner said:

Swapped all the relays. Cannon connector was inspected and looks good. Still no spark. 🤬

It's always a good idea to spread the male contacts gently to make sure they make a good connection.  Looks good and is good aren't always the same on connectors.

Verify 12V to the ECM with key on.  Does the fuel pump prime at key on?  

Ground the oil sensor.

[malibuowner]

14 minutes ago, justgary said:

It's always a good idea to spread the male contacts gently to make sure they make a good connection.  Looks good and is good aren't always the same on connectors.

Verify 12V to the ECM with key on.  Does the fuel pump prime at key on?  

Ground the oil sensor.

I spread the male contacts. How do I ground the sensor

[justgary]

1 hour ago, malibuowner said:

I spread the male contacts. How do I ground the sensor

This is from memory, but I think the sensor is normally closed.  Literally ground the wire at the oil pressure sensor that goes to the ecm.  If the fuel pump is priming, skip this.

[malibuowner]

Problem solved. It was the Ignition Control Module (under the rotar)

[blk93jeepzj]

Thanks for coming back with the solution. Hopefully it will help someone else down the road. 

[Chasethatfeelin]

On 9/21/2019 at 3:16 PM, malibuowner said:

Problem solved. It was the Ignition Control Module (under the rotar)

How did you test/diagnose that it was the control module?