No start, code 1283
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Joined: Aug 2006
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Rick, I check the wire between the IPR and the pcm relay and its under 5 ohms. I tried to check the injector pressure with my scanner and it came up to 128 psi while cranking. Tried again and nothing. I also noticed that my oil pressure gauge is not moving when cranking on it for a long time. It has in the past, because I would have to crank sometimes for 15 to 20 seconds before it started. After the fuel fixes and oil change, it was starting in 4 to 5 seconds like my other truck. Don't know if that helps, but running out of things to try. Thanks for your help, Mike
Measure resistance of IPR coil.
Is resistance 5 to 20 ohms?
No
REPLACE IPR. RERUN test.
Measure across the 2 spaded on the coil ...
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Changed the IPR and the resistance is 10 ohms. Truck started and ran great, drove it for about ten miles with no problems. Shut it of and restarted it, it took a little more cranking than normal but started. This morning I tried to start it but nothing. Put the scanner on it and came back with the code 1283 again. Checked the resistance between the IPR and the junction block below the fuse block and the same 10 ohms. Any other suggestions??
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Guys, I have tried everything I can think of, my hpop was a pint low the last time I looked. Heard that it would go down if you had been cranking on it a lot. I checked the red wire between the IPR and the first relay in the fuse box. It was 4 ohms. Pulled the plastic off the harness around the fuel bowl and it was fine. Checked codes and still have the 1283. Any ideas??
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Code 1283 Thread
Hi,
Did anyone hear how the OP's issue worked out. I have a P1283 code on my "new" 1996 PSD E-superduty and was hoping to hear what he did to get the code to go away. In my case, to get to IPR, I had to pull turbo, fuel filter housing - wow that was a lot of work. Pulling a bolt from the Y pipe - big piece broke out. Dang it! That was after tons of rust penetrant and back and forth on the bolt - just another thing to fix.
Back to IPR and code P1283. I followed the advice from the thread and check the coil resistance, was like 9 ohms - good. Had 12volts through the harness at the connector. Bought another IPR - I plugged the new IPR in (but didn't install in engine), and reran scanner (Matco Determinator X) KOEO codes, same code - P1283. If the coil resistance checks out, the IPR must be good, right? Or do I take a chance and pull the IPR and swap? Is new PCM bad?
By the way, when you pull the IPR, seems like the HPOP oil is coming out on me right - is there a drain?
1997 is not running right either - not my week. Any suggestions on the IPR would be great.
Thanks everyone
Jay
Did anyone hear how the OP's issue worked out. I have a P1283 code on my "new" 1996 PSD E-superduty and was hoping to hear what he did to get the code to go away. In my case, to get to IPR, I had to pull turbo, fuel filter housing - wow that was a lot of work. Pulling a bolt from the Y pipe - big piece broke out. Dang it! That was after tons of rust penetrant and back and forth on the bolt - just another thing to fix.
Back to IPR and code P1283. I followed the advice from the thread and check the coil resistance, was like 9 ohms - good. Had 12volts through the harness at the connector. Bought another IPR - I plugged the new IPR in (but didn't install in engine), and reran scanner (Matco Determinator X) KOEO codes, same code - P1283. If the coil resistance checks out, the IPR must be good, right? Or do I take a chance and pull the IPR and swap? Is new PCM bad?
By the way, when you pull the IPR, seems like the HPOP oil is coming out on me right - is there a drain?
1997 is not running right either - not my week. Any suggestions on the IPR would be great.
Thanks everyone
Jay
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Jay, after a lot of checking and rechecking, someone said it might be the computer. I have a 97 psd so I pulled the computer out of it and put it into the 95 and it started and ran great with no problems. So I ended up buying one from someone on here for $100 and been happy every since. I guess that it had something intermittent in it that was giving me fits. Hope this helps, Mike
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Thanks, hard to believe new computer could be bad but since it's under warranty-might as well have it checked out. Still might replace IPR since its so hard to get to-am I going to get drenched with oil from HPOP reservoir?
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Jay, I don't remember getting drenched with oil, maybe I just changed the coil on the IPR. I ended up changing about everything including the fuel pump, (no fun). My truck runs better with the computer out of the 97 truck. The truck had been getting hard to start for a while, I was having to crank on it for 20 to 30 seconds. Not sure what I did to get it to start quicker, but think is was a combination of fuel screen and oil change ( I know, someone said to check when the last oil change was, and when I did I think I had skipped an oil change and the oil had broken down which kept it from building pressure for the injectors). But that still didn't fix it until I changed the computer. Hope this helps, Mike
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You will make quit a mess if you pull the ipr, I usually pull the oil sensor on the top or the 1/4 plug to the right of the sensor. Use some Sort of pump too suck out roughly a quart of oil. You should be fine after that I pull the ipr. If I remember correctly, it's a 15/16th wrench or a 1".. Pretty sure the first though. You will need to pull the fuel bowl or atleast free it up a bit to move.
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Joined: Oct 2003
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From: Ashland City, TN
You will make quit a mess if you pull the ipr, I usually pull the oil sensor on the top or the 1/4 plug to the right of the sensor. Use some Sort of pump too suck out roughly a quart of oil. You should be fine after that I pull the ipr. If I remember correctly, it's a 15/16th wrench or a 1".. Pretty sure the first though. You will need to pull the fuel bowl or atleast free it up a bit to move.
Hotshot
Joined: Oct 2003
Posts: 17,799
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From: Ashland City, TN
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