from open loop to closed loop
- Thread starter bezerk
- Start date
Re: from open loop to closed loop
what chip are you running? from what I understand, we go open loop at wot no matter what, but I don't think DM reports that....maybe your threshold temp is set around normal operating engine coolant temps.....you mean FP cant hold pressure when you turn the truck off? do you have an adjustable fpr?
bezerk said:
what chip are you running? from what I understand, we go open loop at wot no matter what, but I don't think DM reports that....maybe your threshold temp is set around normal operating engine coolant temps.....you mean FP cant hold pressure when you turn the truck off? do you have an adjustable fpr?
bezerk
New member
Re: from open loop to closed loop
it goes from open into closed loop just idling and while cruising, you can actually feel it going from open into closed loop.
this is on a stock chip, got a FP on order and the AFPR is going in after that.
maybe i need to hook up the FP gauge to see what it is doing.
o2 Volts are 650Mv at wot
93ty475 said:
it goes from open into closed loop just idling and while cruising, you can actually feel it going from open into closed loop.
this is on a stock chip, got a FP on order and the AFPR is going in after that.
maybe i need to hook up the FP gauge to see what it is doing.
o2 Volts are 650Mv at wot
leroy
Donating Member
Re: from open loop to closed loop
I don't think you are feeling it going from open to closed loop. The change would be very subtle, even at the extreme ends of the blm. Pull the ecm-b fuse to reset the blm to verify.
If you have 650 mv at wot, with litttle or no knock, I suspect your O2 sensor is about worn out. If you have a lot of knock, then I suspect a fuel problem.
Jim
I don't think you are feeling it going from open to closed loop. The change would be very subtle, even at the extreme ends of the blm. Pull the ecm-b fuse to reset the blm to verify.
If you have 650 mv at wot, with litttle or no knock, I suspect your O2 sensor is about worn out. If you have a lot of knock, then I suspect a fuel problem.
Jim
bezerk
New member
Re: from open loop to closed loop
the o2 sensor is good, cause i already replaced that one, i get much knock above 12PSI of boost above 60MPH. i'am not going under boost anymore, just wondering if the open to closed loop determined a Feuling problem, cause i never seen this on my Ty before.
the o2 sensor is good, cause i already replaced that one, i get much knock above 12PSI of boost above 60MPH. i'am not going under boost anymore, just wondering if the open to closed loop determined a Feuling problem, cause i never seen this on my Ty before.