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2000 F350 manual
Ok, I could use a little help. Its my brothers truck and Its a long story, I will give you quick run down of what's going on.
Truck starts missing bad, sounds like it is going to come apart. Can get it to repeat every time you wiggle engine harness at right valve cover. Put "clips" in uvch to hold plugs, still wiggle engine harness and it happens. Replace both VC gaskets and harnesses. Now cant get it to act up when wiggle engine harness, but still will happen on its own.
At first it has a few codes (B1352, P0470, P0478, P0603) but the main one was P1316 - do a buzz test and get P1298 - switch IDM with a known good modded IDM and no problems for a few days. Happens again same code P1316. Do buzz test, no problems found. Switch back to his original IDM but now its modded. Truck runs fine again. This time for a couple weeks. Starts acting up again. My brother seems to believe it only happen every time its raining out now?????. Pull the engine harness and check all the wires, all test with in specs, no shorts. Now here is were I am -
We have code P1316 - do buzz test get code P1668 PCM/IDM communication erros
Do buzz test again and get code P0261 Cylinder 1 injector Circuit Low and P1298 IDM Failure (because of modded IDM???)
Do buzz test again and get no codes
Do buzz test once again and get P1271 Cylinder #1 High to Low side open, P1298 IDM failure, and P1293 Injector High Side Open - bank 1
Now every time I do buzz test this is what I get. Checked all injector solenoids and then test 3.2 ohms - switch #1 and #5 solenoid and then do buzz test and no codes.
start truck and now its back to the same #### P1271, P1298, P1293.
Im not sure what to do at this point. I guess I need to pin out the harness between the PCM, IDM and engine harness but I don't know what pin numbers to test. Any Idea's or help sure would be appreciated!!!!
2000 F350 manual
Ok, I could use a little help. Its my brothers truck and Its a long story, I will give you quick run down of what's going on.
Truck starts missing bad, sounds like it is going to come apart. Can get it to repeat every time you wiggle engine harness at right valve cover. Put "clips" in uvch to hold plugs, still wiggle engine harness and it happens. Replace both VC gaskets and harnesses. Now cant get it to act up when wiggle engine harness, but still will happen on its own.
At first it has a few codes (B1352, P0470, P0478, P0603) but the main one was P1316 - do a buzz test and get P1298 - switch IDM with a known good modded IDM and no problems for a few days. Happens again same code P1316. Do buzz test, no problems found. Switch back to his original IDM but now its modded. Truck runs fine again. This time for a couple weeks. Starts acting up again. My brother seems to believe it only happen every time its raining out now?????. Pull the engine harness and check all the wires, all test with in specs, no shorts. Now here is were I am -
We have code P1316 - do buzz test get code P1668 PCM/IDM communication erros
Do buzz test again and get code P0261 Cylinder 1 injector Circuit Low and P1298 IDM Failure (because of modded IDM???)
Do buzz test again and get no codes
Do buzz test once again and get P1271 Cylinder #1 High to Low side open, P1298 IDM failure, and P1293 Injector High Side Open - bank 1
Now every time I do buzz test this is what I get. Checked all injector solenoids and then test 3.2 ohms - switch #1 and #5 solenoid and then do buzz test and no codes.
start truck and now its back to the same #### P1271, P1298, P1293.
Im not sure what to do at this point. I guess I need to pin out the harness between the PCM, IDM and engine harness but I don't know what pin numbers to test. Any Idea's or help sure would be appreciated!!!!