Hello all
I bought an 01 Jetta 1.8t AWW for my daughter and it has been throwing codes for throttle body and all related sensors. All four misfires.
I have a new MAF, new O2 sensors, fuel filter, and Bosch plugs. This has been getting increasingly worse for 2 weeks.
At first cleaning the plugs, MAF, intake, and TB worked - now it runs smooth for about 10 minutes and goes back to throwing codes as well as the symptoms, hesitation, rough idle, stalling, etc.
I checked for vacuum leaks but had no luck, so it may have one somewhere. I tried aligning the TB by letting it sit with the key on for 3 min. I keep clearing the codes but they come right back after it runs for a few.
The plugs look they are taking a beating and it is drinking gas like vodka tonics....
O.K. so do I just start replacing all the parts showing up in the vagcom fault code list, or could it be one sensor or leak throwing everything else off?
I am pretty sure it needs coils and better plugs, but I think those problems are secondary. I want to fix the mixture problem first. But I read in another thread that coils cause similar symptoms...
vag com codes are as follows:
17972 - P1564 Throttle valve control part (J338)
insufficient voltage during basic settings, 35-10, intermittent
17579 - P1171 Throttle/Pedal Position Sensor/Switch-B-Circuit (G188)
implausible signal, 35-10, intermittent
17950 - P1542 Angle sender 1 for throttle valve drive (G187)
implausible signal, 35-10, intermittent
17705 - P1297 Connection charger-throttle valve
Pressure drop, 35-00
17976 - P1568 Throttle valve control part (J338)
Mechanical malfunction, 35-10, intermittent
16684 - P0300 Random/Multiple Cylinder
Misfire Detected, 35-00
16687 - P0303 Cyl.3
Misfire Detected, 35-00
16688 - P0304 Cyl.4
Misfire Detected, 35-00
16685 - P0301 Cyl.1
Misfire Detected, 35-00
16686 - P0302 Cyl.2
Misfire Detected, 35-00
Any help will be much appreciated! Thanks for reading through to the end.
I look forward to your comments and help, as well as offering help with issues I have solved in the past.
Chris
I bought an 01 Jetta 1.8t AWW for my daughter and it has been throwing codes for throttle body and all related sensors. All four misfires.
I have a new MAF, new O2 sensors, fuel filter, and Bosch plugs. This has been getting increasingly worse for 2 weeks.
At first cleaning the plugs, MAF, intake, and TB worked - now it runs smooth for about 10 minutes and goes back to throwing codes as well as the symptoms, hesitation, rough idle, stalling, etc.
I checked for vacuum leaks but had no luck, so it may have one somewhere. I tried aligning the TB by letting it sit with the key on for 3 min. I keep clearing the codes but they come right back after it runs for a few.
The plugs look they are taking a beating and it is drinking gas like vodka tonics....
O.K. so do I just start replacing all the parts showing up in the vagcom fault code list, or could it be one sensor or leak throwing everything else off?
I am pretty sure it needs coils and better plugs, but I think those problems are secondary. I want to fix the mixture problem first. But I read in another thread that coils cause similar symptoms...
vag com codes are as follows:
17972 - P1564 Throttle valve control part (J338)
insufficient voltage during basic settings, 35-10, intermittent
17579 - P1171 Throttle/Pedal Position Sensor/Switch-B-Circuit (G188)
implausible signal, 35-10, intermittent
17950 - P1542 Angle sender 1 for throttle valve drive (G187)
implausible signal, 35-10, intermittent
17705 - P1297 Connection charger-throttle valve
Pressure drop, 35-00
17976 - P1568 Throttle valve control part (J338)
Mechanical malfunction, 35-10, intermittent
16684 - P0300 Random/Multiple Cylinder
Misfire Detected, 35-00
16687 - P0303 Cyl.3
Misfire Detected, 35-00
16688 - P0304 Cyl.4
Misfire Detected, 35-00
16685 - P0301 Cyl.1
Misfire Detected, 35-00
16686 - P0302 Cyl.2
Misfire Detected, 35-00
Any help will be much appreciated! Thanks for reading through to the end.
I look forward to your comments and help, as well as offering help with issues I have solved in the past.
Chris
