resetting apps with edge comp
06-27-2006, 07:18 AM
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resetting apps with edge comp
when resetting apps, should my edge comp be turned on or off, or does it matter ?? I will be following the instructions found on this site for resetting.
99' 2500 24v, auto-trans, stock except for edge comp
99' 2500 24v, auto-trans, stock except for edge comp
06-27-2006, 07:43 AM
#3
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FWIW, the APPS reset procedure listed in the tech facts here is not correct and will not work properly.
The only way to ensure actual APPS reset is like this (As written by DTT):
RESETTING THE APPS SENSOR
This is the procedure DTT recommends to reset the APPS:
With the key on, engine off, you need to probe the APPS wire to see where your voltage is currently set at.
The best location to probe the wire is on the PCM (Power Control Module), which is located off the passenger side of the firewall. There are three plugs going into the PCM. You’ll need to remove the air filter housing to get easy access to it
· You want the C1 connector; this is the connector closest to the engine
· You want the orange wire with the dark blue tracer, which is pin #23
· Voltage should read somewhere around 0.5 volts
· At this point the voltage reading doesn’t matter, it just has to be accurately written down for later reference
TURN THE IGNITION OFF ON THE TRUCK
· The APPS sensor is located slightly above and a little to the left of the injection pump.
· Remove the black plastic cover that is located by your injection pump. (Be very careful unscrewing the plastic screws, they strip very easily. Do not apply any downward pressure to the screws)
· Undo the six 10mm bolts that hold the APPS bracket in place. (Do not remove the cables) You will notice the APPS is on the back of the bracket that you just removed. It is held in place by two 20 bit torques screws. These screws have been installed using Locktite, so be sure to use a good driver bit and gently tap them with a hammer before attempting to loosen them. Be very careful, these screws strip very easily and you only get one shot at them!
· On the APPS you will find a white tag that gives you the information on what the APPS voltage should be.
· After loosening the screws, you can rotate the APPS clockwise (increase voltage) or counter-clockwise (decrease voltage) to get the adjustment you need.
· The reading you took at the PCM (pin #23) should match the voltage on the tag, if not, adjust accordingly.
I found that hooking up your multi-meter at the PCM and adjusting the APPS, while monitoring the voltage, worked the easiest. You’ll need to have the key on, engine off, for this. Once you set the voltage to the correct setting, turn the key off to reassemble the APPS bracket and related parts.
Good luck!
The only way to ensure actual APPS reset is like this (As written by DTT):
RESETTING THE APPS SENSOR
This is the procedure DTT recommends to reset the APPS:
With the key on, engine off, you need to probe the APPS wire to see where your voltage is currently set at.
The best location to probe the wire is on the PCM (Power Control Module), which is located off the passenger side of the firewall. There are three plugs going into the PCM. You’ll need to remove the air filter housing to get easy access to it
· You want the C1 connector; this is the connector closest to the engine
· You want the orange wire with the dark blue tracer, which is pin #23
· Voltage should read somewhere around 0.5 volts
· At this point the voltage reading doesn’t matter, it just has to be accurately written down for later reference
TURN THE IGNITION OFF ON THE TRUCK
· The APPS sensor is located slightly above and a little to the left of the injection pump.
· Remove the black plastic cover that is located by your injection pump. (Be very careful unscrewing the plastic screws, they strip very easily. Do not apply any downward pressure to the screws)
· Undo the six 10mm bolts that hold the APPS bracket in place. (Do not remove the cables) You will notice the APPS is on the back of the bracket that you just removed. It is held in place by two 20 bit torques screws. These screws have been installed using Locktite, so be sure to use a good driver bit and gently tap them with a hammer before attempting to loosen them. Be very careful, these screws strip very easily and you only get one shot at them!
· On the APPS you will find a white tag that gives you the information on what the APPS voltage should be.
· After loosening the screws, you can rotate the APPS clockwise (increase voltage) or counter-clockwise (decrease voltage) to get the adjustment you need.
· The reading you took at the PCM (pin #23) should match the voltage on the tag, if not, adjust accordingly.
I found that hooking up your multi-meter at the PCM and adjusting the APPS, while monitoring the voltage, worked the easiest. You’ll need to have the key on, engine off, for this. Once you set the voltage to the correct setting, turn the key off to reassemble the APPS bracket and related parts.
Good luck!
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