Advice please...light on after service.
I took my GTV JTS to have a slight problem where the revs didnt always drop that low when changing gears to a independant Alfa/Fiat garage. He fixed the problem without changing any parts but cleaned a lot of bits but said there was a fault code stored(p0159) although the management light was not on. He said that after a few mile the managment light might come on and i need a new lambda sensor.
Sure enough the light came on, so i went back the next week and had a new lambda and had a full service, he said he road tested it and all was well. Now 20 miles later the light has come on and i think the car drives fine although i think on start up its a bit lumpy idle although this seems to be fine once warmed up. I am going to take the car back but want advice please.
I had a look at the exhaust for holes as my ford KA had a lumpy idle when it had a slight hole in exhaust. It does have some rust round the back seam of the box, could this make computer error?
Could the new lambda be faulty as i read there have been a few faulty batches. Its a proper Bosch one.....i think, i did check and it looks new with shiny plug.
Does the JTS have a EGR valve as i read these can need cleaning or renewing.
Thanks in advance,