Thanks for the super fast response.
After posting went out to truck. Ran code reader again. Truck tach does not move but dash command shows RPM during crank. Also, oil pressure gauge rises during crank. Now reading code P1280 which is the first time any codes have registered. Will try the starting with ICP removed but did that a few days ago and would not start. That could be because the GPR was intermit tingly not working. Works now but have ordered a new one.
The 222 psi is probably just the way dash command works when the key is turned off. I think it holds the last reading once the key is in off position. So the 2000 psi was dropping back when I cut the key off. I can let it drop before cutting key off and report back.It will not read anything or even connect to the OBD interface until the key is in the KOEO.
Does the ICP read and send the HPOP pressure psi back to the OBD interface?
Thanks for the help. Encouraged to have so many smart experienced folks here. Been a little discouraging trying to figure out why my so little used truck will not go.
After posting went out to truck. Ran code reader again. Truck tach does not move but dash command shows RPM during crank. Also, oil pressure gauge rises during crank. Now reading code P1280 which is the first time any codes have registered. Will try the starting with ICP removed but did that a few days ago and would not start. That could be because the GPR was intermit tingly not working. Works now but have ordered a new one.
The 222 psi is probably just the way dash command works when the key is turned off. I think it holds the last reading once the key is in off position. So the 2000 psi was dropping back when I cut the key off. I can let it drop before cutting key off and report back.It will not read anything or even connect to the OBD interface until the key is in the KOEO.
Does the ICP read and send the HPOP pressure psi back to the OBD interface?
Thanks for the help. Encouraged to have so many smart experienced folks here. Been a little discouraging trying to figure out why my so little used truck will not go.
