Evap smoke test
#12
The PCM needs to know which cylinder is in firing position, so it can fire the correct injector, thus, 'fuel sync'. Without the cam position sensor, the PCM won't know where the engine is in it's rotation, only that it is indeed turning. Fuel Sync needs to be within plus or minus 7 degrees for then engine to run best. You can likely get it 'close enough' to run setting it by hand, but, checking it with a scanner that can read that particular data, is a VERY good idea.
There's an interesting video on youtube from scannerdanner where he's troubleshooting a 2002 2500 that doesn't want to start once it's warmed up. He states the cam sensor is only used on startup. If you look at the "pulse ring" it's actually only 180 degree on and 180 degree off, no signal for individual cylinders so it can't really aid in timing injectors.
#13
Side note:
There's an interesting video on youtube from scannerdanner where he's troubleshooting a 2002 2500 that doesn't want to start once it's warmed up. He states the cam sensor is only used on startup. If you look at the "pulse ring" it's actually only 180 degree on and 180 degree off, no signal for individual cylinders so it can't really aid in timing injectors.
There's an interesting video on youtube from scannerdanner where he's troubleshooting a 2002 2500 that doesn't want to start once it's warmed up. He states the cam sensor is only used on startup. If you look at the "pulse ring" it's actually only 180 degree on and 180 degree off, no signal for individual cylinders so it can't really aid in timing injectors.
#14
Dizzy positon
So i set crank to tdc made sure cylinder one was at the top. Also made the oil pick up gear point to cylinder one. Seems run decent now no kicking or shaking. But it still not same postion as it was on my old engine when i swapped it. Another isssue is that my coolant temp seems to rise and then go back normal sometimes right in between overheating and normal operating temp.
It is pointing to passenger side not sure why my camera flipped it
Is this to much oil pressure?
It is pointing to passenger side not sure why my camera flipped it
Is this to much oil pressure?
#15
So i set crank to tdc made sure cylinder one was at the top. Also made the oil pick up gear point to cylinder one. Seems run decent now no kicking or shaking. But it still not same postion as it was on my old engine when i swapped it. Another isssue is that my coolant temp seems to rise and then go back normal sometimes right in between overheating and normal operating temp.
It is pointing to passenger side not sure why my camera flipped it
Is this to much oil pressure?
It is pointing to passenger side not sure why my camera flipped it
Is this to much oil pressure?
#16
Just out of curiosity, what year is the truck ? There have been some changes to the ECM programming after 96 that change how the cam position sensor is used.
Last edited by DerTruck; 03-21-2019 at 01:37 PM.
#18
Hmm 97 should need the cam sensor only for starting, based on this article: https://www.motor.com/magazinepdfs/052001_07.pdf The article mentions that the crank and cam sensors are used to check each other for problems. So maybe that was the issue.
Now that it's warmer I might try to see if the engine on my 2001 keeps running without the cam sensor.
Now that it's warmer I might try to see if the engine on my 2001 keeps running without the cam sensor.