Every other inj fires???
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Every other inj fires???
Truck sat for the last 2 days in 20* weather and I didn't plug the heater in...
I went to go start it tonight and it sounded like it was running on 4 cylinders... It threw the following codes P0265, P0268, P0274, and P0283.
I find it odd that right before I parked it she ran great for the 80 miles down the highway and then the 20 miles down backroads home.
Any ideas??? I was thinking some gel at 1st but now that I see its every other firing cylinder I am concerned it might be the FICM.
Thanks for your help in advance.
Edit: I also let it come to a decent operating temp and it was still misfiring on 4 of the cylinders.
So you know they are injector 2,3,5,8 and the code says "inj circuit high" for each of the 4 cylinders
I went to go start it tonight and it sounded like it was running on 4 cylinders... It threw the following codes P0265, P0268, P0274, and P0283.
I find it odd that right before I parked it she ran great for the 80 miles down the highway and then the 20 miles down backroads home.
Any ideas??? I was thinking some gel at 1st but now that I see its every other firing cylinder I am concerned it might be the FICM.
Thanks for your help in advance.
Edit: I also let it come to a decent operating temp and it was still misfiring on 4 of the cylinders.
So you know they are injector 2,3,5,8 and the code says "inj circuit high" for each of the 4 cylinders
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NO it sticks around well after its warmed up. Sounds just like a Mercedes diesel, lol
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It's too much of a coincidence that it's 2,3,5 and 8. Which as I understand it just happen to be one bank (not sure if it's the right or the left), and happen to be the center plug of the FICM, meaning it's one wiring harness (the center one).
You could be looking at a wiring problem. If you'd said that you'd recently had the FICM out or disconnected for some reason I'd be telling you to check to make sure the connector was fitted tightly. I'd be looking at the harness for any unusual damage as well.
Here is an interesting quote from the FICM guide.
I would say that if you have the newer FICM then that low side driver mentioned could have failed and may cause what you are describing as well. I would think that would require a new FICM.
This is something you may have to have a dealer diagnose.
You could be looking at a wiring problem. If you'd said that you'd recently had the FICM out or disconnected for some reason I'd be telling you to check to make sure the connector was fitted tightly. I'd be looking at the harness for any unusual damage as well.
Here is an interesting quote from the FICM guide.
On 2004.25+ (1845117C2 FICMs) the low side driver is actually shared among 4 injectors This means an injector short to ground on the low side could produce four different cylinder error codes On 2003.25 (1837127C4 FICMs) there are individual low side drivers for each injector. This means a low side failure would result in a single injector error code. Note: International FICM part numbers are located on a label on the connector side of the module.
This is something you may have to have a dealer diagnose.
Lead Driver
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From: Scio, OR
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I just re-read my own quote.
If I'm reading this correctly, a single injector shorting to ground could cause your codes. Maybe Cheezit could guide you on further testing the injectors.
I just re-read my own quote.
This means an injector short to ground on the low side could produce four different cylinder error codes
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Yeah Iv'e tracked this down to the harness or the FICM. I'm gonna pull the FICM in a minute and see what gives. Hopefully I can just do the repair... The codes actually indicate high voltage which means they aren't poening at all. I had the FICM off last spring to do the INJ O-rings.
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I agreee with post #5, check your FICM connections and make sure nothing came loose!! Also check for a shorted wire harness.
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check to make sure it did not come unplugged. after my new ficm was put in, a week later it ran just like you are talking about. turns out tech didnt get middle plug in good and it wiggled out and came unplugged.
Post Fiend
Joined: Jul 2005
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Failures like that... connectors.. wiring... glitches.. have resulted in more $$$ spent on unnecessary repairs than I can imagine.
Often people do not do their electrical and electronic homework --- and rely on pulling codes.
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OK, so I did my initial FICM test and came up with 48 volts. Just now I had my nieghbor come over and turn the key as I held the probes on the screw and grnd and it came up with 20volts while cycleing the inj... not good. So does the FICM repair cover that issue or do I have to replace the FICM?
Post Fiend
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Follow the FICM diagnostics test procedure in ford TSB (tech folder).
But off hand, I think 20v is a tad low.
I think the TSB calls for a reflash to eliminate the possibility that it has a bad software load..
Also check cables and connectors to see if that changed anything.
But off hand, I think 20v is a tad low.
I think the TSB calls for a reflash to eliminate the possibility that it has a bad software load..
Also check cables and connectors to see if that changed anything.
Post Fiend
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