I'm wondering if anyone can help me please?
I had an incident on 2nd Jan, I drove over a piece of wood which hit the underside of the car and the red light came on - I managed to drive the car 200 miles or so back home from my holiday (!) but it kept stalling at lights/roundabouts, the revs were up and down. I took it to my Alfa owner friend who runs a small garage business and he wasn't sure what the problem was - that cost £30. He then took the car to a guy who had the diagnostic software - another £30. It came up with an error for 3 sensors, which will cost around £25, £90 and £300 to replace. He replaced the £25 first and gave me the car back saying it was a little better. Nothing had changed. I called one of the recommended Alfa specialists on the forum and they suggested changing the idle air control valve. I have had problems with this in the past and my alfa friend said it would cost around £400 to fix - so I ignored it (it was fine after a clean). Anyhow, I looked up the BOSCH PN 0280140553 and found one for £39 + VAT -so promptly ordered it. I fitted this today and there's no change.
I spoke to Meridian Milano in Portsmouth about the 2nd sensor costing £90 - which I believe to be the air temperature sensor. According to Alfa friend this is fitted inside a pipe, so you have to buy the whole pipe? Meridian weren't sure what Alfa friend was taking about, they have a record of the quotes given to Alfa friend but can't see anything for £90. So they have quoted me £330 to fix the air temperatore sensor.
After spending time reading through the forums, it looks as though the sensor is situated inside the MAF, I've also tried unplugging this to see if it makes any difference - there isn't any. Some posts suggest that it's actually the lambda sensor with the symptons I have rather than a MAF problem, i.e stalling at standstill. Alfa friend said that the diagnostic check didn't show a lambda sensor error.
My Alfa friend has now gone on holiday for 2 weeks and I've already had to commute to work by bus for 1 month now and I'm getting pretty fed up! Sorry for the long winded vague explanation, but I've already spent loads getting the car upto scratch before Christmas - so driving over the piece of wood really was the last straw for me!
Any help/suggestions greatly appreciated, thanks, Suse