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Omega General Help / 2001 (Y) 2.2 Auto ECL and strange gear change
« on: 21 August 2012, 12:23:11 »
I have the emission control light on - local VX specilist have switched it off a couple of times for me but comes back, almost always as you lift off from a motorway type run.
Error codes logged are both Lamda sensors, "throttle position not plausible with engine load" and service light short circuit or failed. They are logged but not active in the ecu with exception of service light. Monitoring the Lamda sensors in live data on tech 2 shows them to be working when tested.
Only symptom when driving is unwillingness to change up gear and changing down on a motorway when encountering a slight hill. Most noticeable at around 30mph when it will sit revving just over 3K until you let the accelerator up at which point it changes up.
VX specilist is advising change ECU, but wanted some other thoughts before I spend out.
Steve
Error codes logged are both Lamda sensors, "throttle position not plausible with engine load" and service light short circuit or failed. They are logged but not active in the ecu with exception of service light. Monitoring the Lamda sensors in live data on tech 2 shows them to be working when tested.
Only symptom when driving is unwillingness to change up gear and changing down on a motorway when encountering a slight hill. Most noticeable at around 30mph when it will sit revving just over 3K until you let the accelerator up at which point it changes up.
VX specilist is advising change ECU, but wanted some other thoughts before I spend out.
Steve