mistabiggx
Member
Hello everyone.
I have a 2005 Passat b5.5 tdi (PD) with 233,000+miles on the odometer. A few months ago, I experienced a sudden loss of acceleration/throttle while on the highway. There was a beep, and the glow plug light started flashing with the "Emissions Workshop" message on the dash. I pulled over, turned the engine off, and back on, and everything was back to normal and so thought I was good until it happened again after 2-3 weeks. Then it happened quite often until it became unbearable. Now, I can't do 5km without this happening, and the sad thing is there is no check engine light, and there are no DTC codes when I connect my generic OBD.
So this is what is happening:
So far, I have changed the engine coolant temperature sensor, oil, oil filter. I am getting very frustrated as I do not have VCDS and it isn't very common in my location.
Any help would be highly appreciated. Thanks in advance.
I have a 2005 Passat b5.5 tdi (PD) with 233,000+miles on the odometer. A few months ago, I experienced a sudden loss of acceleration/throttle while on the highway. There was a beep, and the glow plug light started flashing with the "Emissions Workshop" message on the dash. I pulled over, turned the engine off, and back on, and everything was back to normal and so thought I was good until it happened again after 2-3 weeks. Then it happened quite often until it became unbearable. Now, I can't do 5km without this happening, and the sad thing is there is no check engine light, and there are no DTC codes when I connect my generic OBD.
So this is what is happening:
- when I start the engine, idle stays between 1,100 - 1,200 rpm until I begin to move (rpm usually rises). So rpm never goes back to normal.
- at idle, the engine load reading is at 50%-52%
- when the throttle pedal becomes completely unresponsive, I lose my air condition as well. But when I check the readings for throttle position with the OBD, I get accurate readings when press/depress the throttle pedal. This has led me to believe that the throttle position sensor is sending the correct signal but the ECU is refusing to act on it for some reason.
So far, I have changed the engine coolant temperature sensor, oil, oil filter. I am getting very frustrated as I do not have VCDS and it isn't very common in my location.
Any help would be highly appreciated. Thanks in advance.
Last edited: