I went ahead and replaced the spark plug and ignition coil, but it still sounds like it is misfiring.
Dec 12, 2019 at 11:50 AM
I had a code that cylinder one the ignition coil was bad
1999 FORD F-250
BUDDYVEGA
- MEMBER
- 7 POSTS
- FOLLOW
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I have also disconnected the plug and turned on the truck and it still makes the same loud noise as if it was plugged in. I assume it’s the ignition coil module but I just wanted to be sure.
Dec 12, 2019 at 12:01 PM
Good afternoon,
What was the code?
Can you upload a video of the noise you are describing?
Roy
What was the code?
Can you upload a video of the noise you are describing?
Roy
Dec 12, 2019 at 3:01 PM
Hello!
It was a P0351 and P1405.
It was a P0351 and P1405.
Dec 12, 2019 at 3:17 PM
Okay, 1405 is for the DPFE sensor. It could be the hose is off or broken. I attached a picture for you.
The 351 is a wiring issue for the coil. I attached a wiring diagram and highlighted the wires. One wire should have 12 volts with the key on. The other wire is pulsed to ground from a signal from the crank sensor.
Roy
The 351 is a wiring issue for the coil. I attached a wiring diagram and highlighted the wires. One wire should have 12 volts with the key on. The other wire is pulsed to ground from a signal from the crank sensor.
Roy
Images (Click to enlarge)
Dec 12, 2019 at 3:30 PM
Would it be best to change the whole module to that coil?
Dec 12, 2019 at 3:35 PM
There is no module. the control is the PCM. Check the voltage to the coil first.
What about the noise? Can you upload a video for me?
Roy
What about the noise? Can you upload a video for me?
Roy
Dec 12, 2019 at 3:43 PM
I speaking about the specific connecter to the coil. I’m not at my vehicle right now so I am unable but it is very similar to the sound of a bad spark plug/coil.
Dec 12, 2019 at 3:54 PM
Yes, check the voltage at the coil on number 1.
Roy
Roy
Dec 12, 2019 at 3:59 PM
With a multimeter, correct?
Dec 12, 2019 at 5:11 PM
Correct. Check for DC voltage.
Roy
Roy
Dec 12, 2019 at 5:23 PM
Thank you so much for your help!
Dec 12, 2019 at 5:31 PM
You are welcome.
Always glad to help.
Roy
Always glad to help.
Roy
Dec 12, 2019 at 8:07 PM
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