Code 14 and bad spark

[mh87BroncoII]

Hello again...thought you got rid of me, eh.

I have an issue with Pop's BII again (see BII hesitation for a history).

For the last couple of weeks, the truck has had a slight sluggishness when cold, but no problems at all when its warmed up - or so I've been told.

Today the engine stopped unexpectedly and would not start up again - cranking/power is okay.

The locals went right to work by checking spark at the coil. Apparently the spark was yellowish for the first few cranks. After pulling a few plug wires and testing, the spark was blue again and it fired up. They have no idea what they 'fixed'.

The code reader gives #14 (I assume a 'C' code)

Question:
What does a code 14 mean? What would cause a yellowish spark, and where should I begin?

Replaced: TFI, stator, all plug wires, plugs (recent)

Thanks guys. I appreciate your time/help.

---Marty

[mrshorty]

I would get a CM 14 when my TFI module would act up. What you describe sounds an awful lot like a TFI failure.

When you replaced the TFI module, did you put adequate dielectric grease on it? From what I understand, the dielectric grease helps dissipate the heat which is what causes this kind of TFI failure.

Did you replace the pickup in the distributor when you replaced the TFI module?

[mh87BroncoII]

yes, I used the whole packet when I installed it the first time. I later removed the TFI to replace the stator inside the distributor - I did not put any additional grease on the connection as I didn't know for sure what kind of grease it was.

maybe it's worth while to replace the TFI and goop on the dielectric grease...

Apparently it will run for exactly 8 minutes before dying. It will not start again until its cooled off again - sounds like an ignition module/TFI doesn't it...

---Marty

[flathead95hp]

check to see if one of the connectors are corroded or bent, had the same problem on an 87 2.9 Bronco II