johndeerezach
New member
Help me stranded. P1280, p1316, rough idle after gtting on truck pretty hard but it wasnt hardest ive ever had it goin.
rough idleing. bad icp?
- Thread starter johndeerezach
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johndeerezach
New member
Swapped idm with an 97 obs and still the same chit. So rough idle
BigAlsPSD
New member
You can run with the ICP unplugged, but that won't give a P1316 code.
What are you using to pull codes? Can you do a KOEO or BUZZ test to pull the codes from the IDM?
What are you using to pull codes? Can you do a KOEO or BUZZ test to pull the codes from the IDM?
01 blue 7.3
New member
I have this same issue sometimes.
Sent from my Motorola Electrify using Tapatalk 2
Sent from my Motorola Electrify using Tapatalk 2
BigAlsPSD
New member
01 blue 7.3
New member
Same rough idle issue . I dont have any way to check codes.
Sent from my Motorola Electrify using Tapatalk 2
BigAlsPSD
New member
Are you getting a SES light?
If it's the ICP, if you unplug it the motor would smooth out.
Pulling the codes would be the best way to proceed with troubleshooting though.
I suppose you could ohm out the UVCH's as a starting point if unplugging the ICP doesn't do anything.
If it's the ICP, if you unplug it the motor would smooth out.
Pulling the codes would be the best way to proceed with troubleshooting though.
I suppose you could ohm out the UVCH's as a starting point if unplugging the ICP doesn't do anything.
johndeerezach
New member
not icp unplugged and there was oil in the sensor so i will have to change that any ways. but the p1316 code has the be the inj. circut cuz we swapped idms
johndeerezach
New member
i personally dont have a way to but i cud take to a shop on monday that works on crap load of diesels.
P1316 IMO is rarely a bad IDM compared to it being a UVCH or a short in the IDM to INj harness somewhere around the VC or the actual connector to the VCH.
You need a multimeter so buy or borrow one if you need to. Pull the IDM connector and OHM out each of the pinouts. Follow these directions GB Technical Bulletin #103
Another thing you can try thats real quick:
engine off
unplug passenger side UVCH connector try starting
do same on other side.
If one does not allow starting you have your answer.
It does not completely rule out an issue but if it does not start it confirms an issue and the bank.
You need a multimeter so buy or borrow one if you need to. Pull the IDM connector and OHM out each of the pinouts. Follow these directions GB Technical Bulletin #103
Another thing you can try thats real quick:
engine off
unplug passenger side UVCH connector try starting
do same on other side.
If one does not allow starting you have your answer.
It does not completely rule out an issue but if it does not start it confirms an issue and the bank.
johndeerezach
New member
so when i unplug the one plug and try to start it and it doesnt start that means that side is bad that i unplugged.?
johndeerezach
New member
so i pushed the connector in and wiggled it around and noticed it doesnt have the little clip that when you connect the two it lockes in so thats what im assumeing is it because it doesnt throw code and runs like a dream.
johndeerezach
New member
well i let it idle today after moving it and it was running fine then was mowing the ditch and went to leave and it threw a code and doing same thing. so now i presume wiring on one of the uvch plugs bad possibly.
Yep that is what it sounds like to me. The issue is lets say the plug was pulling out from the engine vibrations because it does not have the locking tab on the connector. When it slowly pulls out it many times creates heat and short. This can burn one of the two sides or the other end of the that wires connector.
You can pull the connector from each UVCH and at the UVCH connector use the multimeter same way as in those instructions. If the issue is in the UVCH it will show. If its not then you need to check between the IDM and the connector. The way to test the whole system was to do so at the IDM connector. You would still have to find out where but most of the time its the UVCH.
You can pull the connector from each UVCH and at the UVCH connector use the multimeter same way as in those instructions. If the issue is in the UVCH it will show. If its not then you need to check between the IDM and the connector. The way to test the whole system was to do so at the IDM connector. You would still have to find out where but most of the time its the UVCH.
johndeerezach
New member
so i popped valve covers because i remembered i replaced the glow plugs and thought that maybe i didnt get a wire on tight then i seen the plug that connects to the vc gasket was wiggly so i zip tied it but the tab was clicking just loose and it seemed to work. fingers crossed.
johndeerezach
New member
I ordered a new icp. also taking to a mechanic so he can put his fancy snap on scan tool and see what the actual codes are tomorrow.
johndeerezach
New member
well i drove it yesterday and was normal for like 5 miles and then all of a sudden code came on and rough idle so idk really.
