Episode 139 - Misfire Fix 1996 Ford F250 (P1351 Fix!)
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- Опубликовано: 18 сен 2024
- Welcome! In this video I welcome the latest vehicle to the channel, a 1996 Ford F250. I further go into the main drivability issue this truck has which is a monster misfire issue that is bad at idle and even worse under load. OBD2 scanner lead me to a P1351, which more research leads to an incorrect ICM.
Apologies for the audio while I was talking in front of the running engine. Apparently the new mic I bought does not handle noise filtering well at all.
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Had this exact problem with my 96 bronco 5.0.
Autozone will give you the wrong module. Do not use duralst F125.
Use F139 for a 95 Mustang 5.0.
Wish I found this video a few weeks ago. Spent many hours sorting this problem out both online and under the hood.
Yup. I had to do quite a bit of reading before I figured it out and was able to order the correct replacement.
I put this part in my 96 f250 5.8 and it would not start at all. with some others (mostly gray) it will start but run rough. with some black ones, it will run smooth, but with 1351 and 1359 errors that wont go away. any ideas?
The part in the video is specific to the 302 small block of that time. The P1359 code is interesting. That is saying the PCM isn't seeing SPOUT output, which means you aren't getting computer timing advance on the distributor. Have you checked to make sure your SPOUT jumper is attached and the wires are in good working order? If you have swapped multiple ICMs and aren't seeing much improvement, check the wiring between the ICM, PCM and distributor and see if anything is toasty.
Did some more quick research. In 1996 the 351 also had a crank position sensor (CPS). The ICM for that year is a bit special because it has to talk to the CPS. It might be a bit of a pain but you're going to have to track down the correct ICM for a 1996-1997 Ford 351.
Removing the spout didn't change the engine rpm. But it starts at about 1500, settles down to 1000, then drops to about 850 and stays there. Does that help diagnose?
Not really. It says your idle is normal for an auto, around 850 when warmed up. If the spout wiring is boogered then pulling the jumper won't do anything anyway. You are going to have to check the timing with a timing light with the SPOUT connected to confirm you are seeing advance. If you are, then the SPOUT is not the culprit and you can focus back in on the CPS or the ICM.
I've tried so many icms. The Motorcraft 1075 and 1077 did not work. So I really have no idea what to look for.