12-27-2018, 11:27 AM
OK - I took the beast out last week to get more gas and drive it around to see if I could get it to throw a DTC, which it did - a P0300. Unfortunately, the freeze frame data captured by my scanner was a surprise... only 7 of the PIDs show data compared to the amount of PIDs that are available when all are selected in the live data function (see attached file).
Luckily, I was reading live data when the DTC was generated, so when I created the attached .xls/Excel file from the frames of data generated, I plugged the freeze frame data in right before the scanner showed the DTC as being generated. While there are some readings throughout the engine data that look a bit off to me, I don't see anything jumping out at me that caused the P0300 DTC though.
Yesterday afternoon, I pulled the MAF and cleaned it as directed, then tested it using the MAF 13800-58B00 info page. All numbers read looked pretty much normal when back probing wires:
Key on, no start - Blue/Black: .006v; Gray/Black: 1.338v; Engine started, and Gray/Black was 2.069v @ 792 RPM Revving the engine to 3-4 K RPM in neutral showed it going up to just over 3 volts.
Unplugging the MAF and the TPS separately while the engine is misfiring/bogging made no significant difference, but they did generate DTC for being disconnected.
Checking the PO's FSM, I could not find a fuel injector balance test - is that the test where the injectors are removed and tested on the bench to see how much fuel the injectors move over a specified amount of time to see if they are all working the same/within spec?
I forgot to grab my propane bottle setup from our cabin last weekend so I can do some vacuum leak testing, and to send some down the intake when the engine is running poorly.
Will keep working this as weather permits...
Luckily, I was reading live data when the DTC was generated, so when I created the attached .xls/Excel file from the frames of data generated, I plugged the freeze frame data in right before the scanner showed the DTC as being generated. While there are some readings throughout the engine data that look a bit off to me, I don't see anything jumping out at me that caused the P0300 DTC though.
Yesterday afternoon, I pulled the MAF and cleaned it as directed, then tested it using the MAF 13800-58B00 info page. All numbers read looked pretty much normal when back probing wires:
Key on, no start - Blue/Black: .006v; Gray/Black: 1.338v; Engine started, and Gray/Black was 2.069v @ 792 RPM Revving the engine to 3-4 K RPM in neutral showed it going up to just over 3 volts.
Unplugging the MAF and the TPS separately while the engine is misfiring/bogging made no significant difference, but they did generate DTC for being disconnected.
Checking the PO's FSM, I could not find a fuel injector balance test - is that the test where the injectors are removed and tested on the bench to see how much fuel the injectors move over a specified amount of time to see if they are all working the same/within spec?
I forgot to grab my propane bottle setup from our cabin last weekend so I can do some vacuum leak testing, and to send some down the intake when the engine is running poorly.
Will keep working this as weather permits...