No spark 5.0 mpi

[Bravo402]

I have no spark on my 5.0 mpi with bravo 3. I have replaced the cap and rotor along with ignition module and still nothing. Not sure if it's the coil, the crankshaft sensor, or ECM. How can I test these out before i just go buy parts. Thank you for your help!

 

[midcarolina]

More info is needed to help you out.......If you do not already have the service manual get one or drop over to the adults only section and follow the online link, then follow the trouble shooting tree, then you can come back and post your findings and someone can help you determine the issue.

 

[dubs283]

when you crank the engine does the tach move??

 

[Bravo402]

No not that I can tell maybe very little

 

[dubs283]

as long as the lanyard kill switch is in the "run" position, during cranking you should see at least 300 rpm on the tach, if not there is an issue with the crank position sensor or the ecm

what is the serial number of your engine??

 

[Bravo402]

OM653566

 

[Bravo402]

I checked the lanyard kill switch it's good

 

[Bravo402]

Changed out the crankshaft position sensor still no spark. The negative side of the coil has power but it's not breaking it up

 

[Bravo402]

Throwing in the towel. Going to take it to the shop. Hopefully they aren't to far backed up and they go easy on me.