rexpontius
New Member
- Messages
- 15
Hi Guys,
Hope you can help with the following:
My 3200 GT (1999) starts in limp-home mode with CEL on, everytime after sitting for a few hours.
Diagnosis with Unidiag throws a "P0221 - Throttle/Petal Position Sensor/Switch 'B' Circuit Range/Performance Problem"
All the obvious resets do not work (recalibration pedal pot with ignition on for 2 mins, connecting white and yellow wires in parallel, etc.)
Also I opened up the throttle body and checked the soldering joins of the Sacer sensor, which look fine and give plausible voltages (1.15 volts in default butterfly opening, going up to 4.8 with full open throttle)
I replaced the drive-by-wire relay, to no avail....
The only way to get it going is to let the car idle a few minutes (5-10 min or so), shut it off for a few mins, and then restart it again.
The car then drives without any issues at all, and no error codes in Unidiag.
Will try measuring voltages at the white and yellow pedal wires soon, but any other input is very much appreciated.
Cheers
rex
Hope you can help with the following:
My 3200 GT (1999) starts in limp-home mode with CEL on, everytime after sitting for a few hours.
Diagnosis with Unidiag throws a "P0221 - Throttle/Petal Position Sensor/Switch 'B' Circuit Range/Performance Problem"
All the obvious resets do not work (recalibration pedal pot with ignition on for 2 mins, connecting white and yellow wires in parallel, etc.)
Also I opened up the throttle body and checked the soldering joins of the Sacer sensor, which look fine and give plausible voltages (1.15 volts in default butterfly opening, going up to 4.8 with full open throttle)
I replaced the drive-by-wire relay, to no avail....
The only way to get it going is to let the car idle a few minutes (5-10 min or so), shut it off for a few mins, and then restart it again.
The car then drives without any issues at all, and no error codes in Unidiag.
Will try measuring voltages at the white and yellow pedal wires soon, but any other input is very much appreciated.
Cheers
rex