What to do next dilemma - is it a head gasket?

Some of you may have read my thread over a month ago "I'm Fffffreeezing" where I was having ongoing issues in trying to get to the bottom of my I had to heat in the car.
Well after many weeks (almost 4) at the garage, they have concluded that the car must have an issue with a leaking head gasket or worse a cracked head.

The car (1.6FSi Blue Storm) is a great runner and shows little sign of problems except that as the garage has fixed one issue to try and get the car warm again, it seems to have created a new and more expensive issue.
The problem is clearly pressure related, the coolant can be at a normal level and then just bubbles over (if allowed to run from cold and warm up with the cap off).
The garage have replaced the expansion tank, which was found to be cracked. They then found a pipe that was cracked and replaced that. They also replaced the water pump twice and fitted a new Thermostat.
Driving back from the garage yesterday the car temp went suddenly from 90 to 120, chimed loudly to warn me that it was overheating and then went back to 90 again. I went back to the garage who checked fault codes which said something like "air leak". The sprayed all around the engine with a special spray to highlight an air leak and found nothing. They reset the fault codes and sent me on my way. Driving home (10 mins) the car suddenly on idle started reving up to 1900rpm and then back to 800.

Give it a good run I thought. So, today I drove an hour to Bristol with my 3 and 1 year olds to visit the Zoo. Car absolutely fine on the motorway cruising at normal motorway speeds.When I got the Bristol and in a bit of stop start traffic the strange revving happened again and the temp went up again temporarily to nearly 120. I stopped to get a sandwich, left the shop and the car cut out with battery light on and engine fault light on. It would then turn over. Not fun in the pissing rain, in the middle of a dual carriageway with 2 young children. RAC came out and of course the car started with no problem. His kind advice was to sell it asap and get something more reliable!

My dilemma is that I bought the car for what I thought was a reasonable deal at the time, last September for £1900 and I got him down to £1300 on the basis that the cambelt was due and the wheels needed a complete refurb and new tyres.
I've since spent a further £1700 at least of various things. So it stands me in about £3k

Do I:

Sell it on to an unsuspecting purchaser which feels like bad karma to me.
Sell it on to an enthusiast (possibly on here) who has the time, skills and inclination to further investigate this.
Find someone who is a specialist and used to dealing with these cars on a regular basis and can ID the issue for me once and for all.Someone like the A2 specialist who used to be in Milton Keynes but I understand closed up shop)?

I love the quirkiness and practicality that the A2 offers. I hate the unreliable let down that this particulalr one has been for me and the children (they never did get to the Zoo today).
I don't think I could bring myself to buying another after this one, for fear that it will be the same load of issues again....

Thoughts please?
 
Does your garage know what they are doing? Maybe you need to get the car to an A2 specialist to sort it out once and for all.
 
Don't be disheartened, it will be possible to solve this.
I had similar issue with my FSi, now sold - but ulitmatley needed new Radiator Fan as this wasn't kicking in.
If you can hook up with a member with VCDS in your area they can do output tests which will check whetehr the fan controller can switch the fan on appropriatly.
Be systematic- is the new thermostat opening and the radiator getting hot - if not ?blocked radiator / airlocked rad (although it should automatically vent running with cap off)
Head gasket is likley given that it has overheated at least once but this shouldn't be too expensive to fix.
Also ?ongoing leak elsewhere in cooling system - lots of small hoses which can be problematic e.g. those ot heater matrix where it meets the bulkhead. The large coolant pipe from water pump to thermostat housing behind the engine block is also a frequent problem.

Looks like you're going to have to throw some more cash at it but you'll get a good car at the end of it. frustrating when you add up all the time spent too going to garages. A good Audi Independent with experience of the A2 / FSi engine would be helpful.

Thanks

Pete
 
Thanks for the advice.
Took it back to the garage today and he is going to take the head off to check the state of the gasket and for anything else obvious.
He mentioned that the expensive bit is that all the bolts should be replaced as they may have been elongated?
 
I'm sorry you are having such a rough time with your A2. I've got an FSI too and some of what you describe does sound a little like mine went before I had to have an engine rebore and new head gasket. I was lucky that I found a VW Audi specialist near me, who had worked on A2s before and was willing to take his time playing around without charging me for all of his time.

Having said that, when I got her back, she was like a new car. I can't comment on the bolts elements, although from my experience, it wasn't parts in particular that was expensive on mine - it was sending the engine block away to be rebored and the labour, so hopefully someone else can comment on the bolts bit. I am a little wary about your garage taking four weeks to only come up with a possible head gasket issue. My garage had identified the compression issue, which cylinders were affected and taken the head off to find that the gasket was split within 1 day! They had the whole thing done within weeks and most of that was the time that the engine block was away.

I could definitely recommend him as a garage, but it's really miles away from you I'm afraid

I do hope you can get it sorted. They are fab cars when going well, but 1.4s are more reliable (I've had both)
 
Thanks for the advice.
Took it back to the garage today and he is going to take the head off to check the state of the gasket and for anything else obvious.
He mentioned that the expensive bit is that all the bolts should be replaced as they may have been elongated?

Non-OE but not expensive: £12.42 for the set of bolts (10 of).
https://www.onlinecarparts.co.uk/oenumber/036103384e.html
I think Audi were ~£50 for the bolts a while back (£5 each).

Head gasket. ~£30 for non OEM.
https://www.onlinecarparts.co.uk/spares-search.html?keyword=036103383AN
Audi perhaps £40?

regards

Andrew
 
Thanks Teresa and Andrew.
The garage took so long as he was doing me a bit of a favour on the labour, fitting in in when he could and in the end he charged me barely anything.
 
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