I have a 1985 f-250 4.9L inline six. Several weeks ago while driving on the freeway the engine shut off. The fuel system appears to be working well, but no spark. I've tested the coil, changed an old ratty tfi module, and continuity tested all of the wires. when I voltage tested the connector to the tfi module the #1 and #3 wires tested well below 3/4 of battery load. do these wires go to the eec? my chilton wiring diagram does not match mine. In fact my wiring more resembles the 86 wiring diagram. The timing seems to be set right. the computer codes I recieved are as follows (i don't know where some of the sensors are.): 21, 22, 41, 51, 112, 211, 212, 332, 542, 621. Does any one know if any of these would cause the engine not to spark?

 

Wow that's a lot of codes, whenever you pull codes you should deal with them in the order they came out. I'm getting code 212 too, It turned of 6 or 7 times within 1 1/2 hour period, including the highway and crossing a busy street (YIKES!) I tried to start it last night, when it didn’t start by the 3rd time I checked the battery with a voltammeter, so I asked someone to just crank it while I checked it and it started almost right away, I think my truck hates me!, so I went on with checking timing, codes ect.. but while I was running the KOER test it kept dieing so I wasn’t able to pull codes again. Idle also seamed really low, I'm gona have the shop get a quick look at it while I’m there for emissions test tomorrow. Let ya know what they say. https://www.ford-trucks.com/forums/s...d.php?t=236526

I don't know about bout the 2 digit codes but.....

DTC 112
Intake Air Temperature sensor circuit below minimum voltage, 254 degrees F indicated.

DTC 211
Profile ignition pickup circuit failure.

DTC 332
Insufficient exhaust gas recirculation flow detected.

DTC 542
Fuel pump secondary circuit failure.

DTC 622
Shift Solenoid 2 (SS2) circuit failure during KOEO self-test.

Most of those codes can keep it from starting. Which ones were hard codes, which were memory codes?