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Blenheim Car Sales

Chevrolet Cruze 1.6 petrol Lambda issue

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so i have a  63 plate Cruze 1.6 petrol and it has the fault codes for a  O2 sensor, my garage changes it for there normal motor factor part and it comes back on after around 10 min of driving, They change it again for a Bosch part and same thing clears codes but comes back on after a short drive, Takes it to my Auto electrician and he confirms all is good, no issues wiring is not the cause of my issue, He thinks it may need a software update or something that a  dealer diag tool to tell the car it has had the  O2 sensor changed, He mentioned that it has a  Vauxhall part number on the ECU

 

So my question is there a  Chevrolet specialist anyone can recommend or would you chance your  Cruze with the Vauxhall ECU with the Vauxhall main dealer see if they can resolve, I am stuck car is sold 

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Silly question I know but, they have changed the correct lambda sensor, won't be the first timeB)

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Hilarious, comes up P0138 O2 sensor Circuit Hi Voltage Bank 1 Sensor 2....................and P0036 HO2S Heater control Circuit Bank 1 Sensor 2

I beliveve its the  one under the car rather than the one on the manifold  thats visible  with bonnet open, They changed the one under the car

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Time to check the wiring again then. It’s not rocket science on this engine. The ECU is in the engine bay, a “decent” sparky should be able to test it. 
 

I had a Astra with similar codes a long time ago that needed an ECU. I can recommend a good supplier of a plug and play ecu should it need one. 

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Thats the reason i am asking here, I have had 2 Lambda sensors ( assumed working as they are new) and had tested the wiring for the O2 sensors tested by a  specialist in Car electrics and both are fully working, My auto electrician said it may be a ECU but that is Not something i want to hear, 

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God knows about Chevy’s finest but I very rarely get sensor issues so when I do I just accept the main dealer parts prices. At least you know the sensor’s parameters are correct.

I’ve never had an ECU issue on any car but my mechanic, the local Vx specialist & a Vx trader all tell me Vx ECUs are common failings. 

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Check the voltage and live data from the sensors via diagnostic 

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Has live data actually been checked or is your garage just playing parts darts? And 02 sensor fault code can relate to a lot of other things. Cat could be knackered for a start.

Edited by Lakeside

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6 hours ago, BHM said:

I’ve never had an ECU issue on any car but my mechanic, the local Vx specialist & a Vx trader all tell me Vx ECUs are common failings. 

...i've got a few kicking around to back their claims up!

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1 hour ago, Lakeside said:

Has live data actually been checked or is your garage just playing parts darts? And 02 sensor fault code can relate to a lot of other things. Cat could be knackered for a start.

Yup, even an exhaust leak if pre-cat, live data is everything. 

I never changed it as I've never changed an ECU but, the closest I had was a late gasoline Zafira.

That bastard just wouldn't run correctly, lumpy as fuck, we did suspect a corrupt ECU.....live data said every OK, air flows, fuel trims, temps, air fuel ratios, no air leaks, compression check all good, vacuum gauge across it checking for broken valve spring, the lot, nada, all good.

Had word around....swallowed a pill and got out of it. 

Good luck, lets hope something cheap, checking lambda sensor performance is 1st stuff for a decent mechanic. 

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1 hour ago, Blenheim Car Sales said:

if it does get to ECU is it a "virgin" only new unit or would matching exact part number  used be a fix ??

Speak to Andrew at ECUstogo. He knows all about these ECUs.

 

ECUS TO GO LTD

VAUXHALL SPECIALIST

SALES HOTLINE 01642 758825

OR

07811 163123 BETWEEN 9-AM 8-PM

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