AUDI A2 1.6 FSI 2002 Throttle Body part no 036133062D seems to be discontinued

Diagnosis must be guided by the scan report. Knowledge is required to interpret that report. There's quite a bit of FSI knowledge on here. A mechanic who doesn't share his thoughts with the car's owner is not a confident mechanic. Is there anyone local, (checkout the scan register), who can scan it for you you, (at the garage)? As Andy says, it's a five minute job.
Mac
 
Hi

Thanks for the offer of help it's great on this site people talk to you. It's more than just blind faith it's a combination of two factors:

1)The guy has fixed every car I've ever had over a 20 year period including the A2 on a previous set of occasions. As we have been discussing though this is no normal car. He is not charging me anything for the scan I just haven't asked him for it as he is an old guy who is semi retired. I could go and get the scans. Should I go and get the scans next week and just write out all the codes plus talk to the mechanic and see what he actually says e.g. I've got a BMW 540i with 243000 miles on the clock. A Ford Escort from 1994 1.8, a Triumph Stag, A 2002 Ford Galaxy 2.3 petrol manual car all in very good working order thanks to him and of course I've got another company car on the way that considering its going to be new I hope I',m going to get some trouble free motoring from. It's the BMW 540 thats the impressive one, Germans do have a habit of putting strange new systems on cars and I've had every pother mechanic who has ever looked at that car go from zero to 100% failure in 5 seconds.

2)I have to hire tow trucks with a man who tows it. I do have breakdown cover but all that has done is get me a tow from the point of break down 10 miles from. However if you were close to Luton or you had a mechanic you could recommend who was or better still a mechanic in Luton that would be good?

Here is the history of the Audi A2 car as we are discussing its a 52 plate Audi A2 1.6 FSI Petrol. My aunty owned it from it being two years old. She always put E5 expensive petrol in it like Shell V Power or whatever....you know what I'm saying she put top fuel in and serviced it regularly all the way to 2018 when gave it to her son and got a new car. HJe treated the car badly and did to things which were very bad. Worst one is he ran it on the cheapest petrol he could get so that is going to be E10 from supermarkets and he never took it on long runs he just drove it around town. So despite the fact that the petrol tank and fuel system have had items replaced HPFP, cleaned out petrol tank, replaced pump and sender in petrol tank, replaced other items on the high pressure fuel line, Timing belt, water pump, Water housing,

more recently and with this fault so far throttle body, thermostat housing, replaced, alternator belt, fuel service looked at plugs, coil packs etc. fault codes still there has done nothing so far after latest break down in December
 
Enjoyed reading recent history of your car collection a mixed bunch. I have not owned an FSI A2 but read lots about them on this site.
Fingers crossed an A2 breaker has a known working throttle body if you can't find a new one....
your in the right place to get A2 car issues discussed and ultimately fixed.
 
I can understand your loyalty. But the parts recently changed don't seem to be scan driven, no obvious, (to me), common thread.
The FSI is an odd ball engine, first and last of it's kind. The good thing about it is that it has a large number of sensors, which, using measuring blocks, allow an in depth look at what is going on in there. This takes time, so is something you need to do yourself, with help and guidance from here. No mechanic has the time and no customer would pay if he did.
It sounds like a big jump but it's the only way to find out what's wrong. Doesn't mean you have to fix it yourself, just that you can discuss the next steps on a level, with your mechanic.
If there is someone, not too far away, who can show you how, then please do that. There's only about 700 FSIs left, so everyone of them needs to be loved, despite that being hard to do when it's is poorly.
Mac.
 
rotifer said:
Enjoyed reading recent history of your car collection a mixed bunch. I have not owned an FSI A2 but read lots about them on this site.
Fingers crossed an A2 breaker has a known working throttle body if you can't find a new one....
your in the right place to get A2 car issues discussed and ultimately fixed.
Click to expand...
Rather than just replace it, (parts and labour), it would make more sense to try a Throttle Body Adaptation, (registered VCDS Lite or full). If the throttle body is faulty, that will confirm it. If the Throttle Body is replaced, the adaptation will have to be run anyway, so nothing lost. Best find someone else though, at £80+ !
If it's not faulty, (adapts OK), then a new diagnosis is required.
Mac.
 
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PhilipS said:
Hi

Thanks for the offer of help it's great on this site people talk to you. It's more than just blind faith it's a combination of two factors:

1)The guy has fixed every car I've ever had over a 20 year period including the A2 on a previous set of occasions. As we have been discussing though this is no normal car. He is not charging me anything for the scan I just haven't asked him for it as he is an old guy who is semi retired. I could go and get the scans. Should I go and get the scans next week and just write out all the codes plus talk to the mechanic and see what he actually says e.g. I've got a BMW 540i with 243000 miles on the clock. A Ford Escort from 1994 1.8, a Triumph Stag, A 2002 Ford Galaxy 2.3 petrol manual car all in very good working order thanks to him and of course I've got another company car on the way that considering its going to be new I hope I',m going to get some trouble free motoring from. It's the BMW 540 thats the impressive one, Germans do have a habit of putting strange new systems on cars and I've had every pother mechanic who has ever looked at that car go from zero to 100% failure in 5 seconds.

2)I have to hire tow trucks with a man who tows it. I do have breakdown cover but all that has done is get me a tow from the point of break down 10 miles from. However if you were close to Luton or you had a mechanic you could recommend who was or better still a mechanic in Luton that would be good?

Here is the history of the Audi A2 car as we are discussing its a 52 plate Audi A2 1.6 FSI Petrol. My aunty owned it from it being two years old. She always put E5 expensive petrol in it like Shell V Power or whatever....you know what I'm saying she put top fuel in and serviced it regularly all the way to 2018 when gave it to her son and got a new car. HJe treated the car badly and did to things which were very bad. Worst one is he ran it on the cheapest petrol he could get so that is going to be E10 from supermarkets and he never took it on long runs he just drove it around town. So despite the fact that the petrol tank and fuel system have had items replaced HPFP, cleaned out petrol tank, replaced pump and sender in petrol tank, replaced other items on the high pressure fuel line, Timing belt, water pump, Water housing,

more recently and with this fault so far throttle body, thermostat housing, replaced, alternator belt, fuel service looked at plugs, coil packs etc. fault codes still there has done nothing so far after latest break down in December
Click to expand...
I concur with the posts above.

Couple of things worth noting. Firstly, the A2 (any A2, not just the FSi)- is remarkably sensitive to battery voltage levels. If it was possible to search A2oc for new member initial posts in October-December in the past decade asking for advice about "all the warning lights have come on and VCDS scan says that every ECU has fault messages", you would almost certainly find that somewhere further down the thread the original poster has been given advice to either replace a 20-year old factory-fit VARTA battery, or to clean the starter motor earth point.

Sometimes the seasonal drop (or a sudden unseasonal drop) in temperatures can cause a bucket load of lights to come on simply because cranking the motor with a cold / gradually-failing battery can make various ECUs unhappy as global voltage drops. Sometimes corrosion to the starter earth means that even a brand new high quality full capacity battery simply doesn't have enough juice to start the engine (particularly Tdis owing to the compression that the starter is trying to overcome).

Another unexpected source of lots of warning lights coming on that impact on engine running and all sorts of things is a brake light switch that is failing and creating electronic noise on the circuit. This also causes lots of lights to come on and often correlates with the engine going into some kind of limp home mode (at least with my other half's 1.4i). Replace the brake light switch, eliminate a lot of issues, seems to be the consensus on this one.

So - while the throttle body almost certainly needed a clean, and quite possibly a solenoid valve in the EVAP system (I needed to replace this in my A6 that eliminated engine light coming on when you accelerated out of a junction - there was a recorded error for that sensor, so I bought one and replaced it, instant fix).
 
Good Afternoon,

I note in your last post you say the garage will not charge you for a scan, just that you have not asked, I strongly suggest you do and post the scan results here, either as a file attachment or a collection of screenshots. Without this guidance nothing meaningful to offer but guesses, but take Mac's advice first.

Andy
 
Thanks for this advice about the battery. In fact I have not changed the battery on the A2 in the time I've had it.

Yes I will call the garage and get the error codes and ask the mechanic what checks he has done and how he has arrived at the control valve for the EVAP System.

Please note the mechanic said it most likely won't completely solve everything changing this control valve for the EVAP system. When I have talked to the mechanic previously the thing he is least happy about with the car is the dirty fuel system and he said previously that everything that ever comes off the car is very dirty the HPFP and all sorts of other bits on the high pressure side and in the petrol tank. At the start of this latest break down we were talking about a new set or re conditioned set of injectors. I do have an injector from the car which was replaced early on and its just totally blocked but I'll ask about the age of the battery
 
PhilipS said:
Thanks for this advice about the battery. In fact I have not changed the battery on the A2 in the time I've had it.

Yes I will call the garage and get the error codes and ask the mechanic what checks he has done and how he has arrived at the control valve for the EVAP System.

Please note the mechanic said it most likely won't completely solve everything changing this control valve for the EVAP system. When I have talked to the mechanic previously the thing he is least happy about with the car is the dirty fuel system and he said previously that everything that ever comes off the car is very dirty the HPFP and all sorts of other bits on the high pressure side and in the petrol tank. At the start of this latest break down we were talking about a new set or re conditioned set of injectors. I do have an injector from the car which was replaced early on and its just totally blocked but I'll ask about the age of the battery
Click to expand...
I'd think a fuel filter change, at the least, would be a good idea.
Mac.
 
Your mechanic feels that the root cause of the car's problems is a dirty fuel system. Quite possible given the previous period of ownership.
Surely, the first thing he should be suggesting is a thorough cleaning of the fuel system, not replacing parts that will soon, also be damaged by the same dirty fuel that he knows all about?
Apologies to your mechanic if I've misinterpreted your posts.
Mac.
 
Thanks for this. Please don't worry about me or my mechanic. I've got to be honest and tell you that I think with my next car purchase I think it would help if I bang my head against the wall before I go down there and take an expert.
I think the only misinterpretation of my posts is the enormous gulf in knowledge about cars between me and the mechanic. I am working as a salesman in the Molecular Biology area so it's quiet possible that I sound like I know something about how car work but I just don't and I have never worked on cars except with my Dad and the only reason my Dad was a better mechanic that me was because my grandfather was an engineer. Conversely my mechanic has trained with companies like Bosch, Audi etc and got master level qualifications and he is 70 years oldish he has never told me his age. You are correct though my mechanic knows the car has a dirty fuel system and he changed the fuel filter on day one of me owning the car. I still have the original fuel filter that came off it and it looks old. It has unfortunately been suggested to me that it was the fuel filter that was on the car when it was new and its never been changed because it said Audi on it! I just hoe this is not true.
Cleaning the fuel system is something he has tried, cleaning out petrol tank, fuel lines but I think so much dirt is in there that unless there was a system my mechanic does not have which is very likely in fact he has done what he can. What about an atomizer that pumps in atomized fuel like a gas........I think I've seen this on wheeler dealers with Ed China.....is it expensive is it real, is there something better please? I have of course suggested to the mechanic about chucking Redex into the fuel but every mechic I have ever talked to about this has said no due to pollution, it will not help the car and cars like the A2 do not respond well to this treatment. One mechanic told me that on fast Audi's the injectors can be blocked by something the width of a human hair
 
A second opinion, via an independent scan, would do no harm.
It's easy to pursue a tangent, even, (especially?), us oldies.
I'm a few years senior to the mechanic's estimated vintage.
Mac.
 
Mechanic has got Windows Based VAG/VAS Emulator Running on Windows 10 x 64 VCDS Version Release 21.3.0 (64X) Data Version 20210226 DS325.0 as of July 2021. I'm sure he has all updates between then and now. I'm copying that from a scan he did at that time when something else had gone wrong with the car. Is there a better system than that please and if so I would be interested in getting a second opinion and scan and paying for it if the mechanic can't fix the car. As I say biggest problem for me is car tow costs I would need a low loader with driver. As I say I will get the error codes this has been me just being lazy and not having got them on this string yet. If you can help that would be marvelous
 
Error codes are P300, P3001, P3002 HPFP working fine, new spark plugs, coils checked everything checked except injectors which are old.
 
Has the fuel rail press been measured, with ignition on, engine off then engine running, to confirm both the HPFP and the electric pump in the tank? Measuring Blocks, Group 141.
Mac.
 
Yes all good on pressure and HPFP checked plus spark plugs changed, coils checked HPFP renewed with various other fuel system parts changed like fuel pump sender petrol tank cleaned ot, fuel filter replaced full service done five weeks ago, alternator belt changed, throttle body changed thermostat housing changed battery checked, water pump replaced timing belt replaced. There is a slight worry on the injectors which are all old
 
just one other things HPFP was a second had unit purchased on e-bay and I very much doubt that the mechanic has measured the fuel rail pressure on a rolling road when the car is doing 70 mph which is the speed that the cylinder 1 and 2 failure occurs for sure
 
PhilipS said:
just one other things HPFP was a second had unit purchased on e-bay and I very much doubt that the mechanic has measured the fuel rail pressure on a rolling road when the car is doing 70 mph which is the speed that the cylinder 1 and 2 failure occurs for sure
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See what you mean, but low fuel pressure might not give cylinder specific miss fires though, more likely random cylinders?
Logging fuel pressure, and miss fire count, on a drive is best bet. See if correlation between the two.
Mac
 
I just talked to the mechanic himself. It is not good news. Yes your right. He said unlikely to be the HPFP as that would almost always give faults on the other cylinders not specifically 1 and 2 . They have done smoke tests there are no leaks on the high pressure side. He said that its going to be something weird or the injectors or it will need a new engine. He has replaced the spark plugs swapped around coil packs with that there is a slight improvement to cylinder two. Then also he explains that with a modern TFSI you can switch off the misfire counter but with this older TFSI you can't therefore the engine which now runs well will get up to a certain number of misfires and then the ECU will switch on the warning lights and that is currently happening in 45 seconds.
So your suggesting logging fuel pressure on the high pressure side and miss fire count while driving it. I wish I had read this before I talked to the guy to ask him if he has tried that I bet he hasn't. This would then get us into the weird stuff probability wise which I could write a book about having been a scientist like what about this and this is my theory ''it's all gone wrong'' but its slightly wronger on cylinders one and two. What could have happened is that the high pressure fuel pump only starts to leak with a lot of force on it at high speed and there is a problem with all 4 twenty year old injectors like the plastic is all shattered inside on injects for cylinders 1 and 2 the injects are literally not spraying correctly at high pressure but all cylinders are suffering because the HPFP leaks. It's just basically another Tequila sunrise a Rent a Reck and every component on the vehicle is f......
 
PhilipS said:
I just talked to the mechanic himself. It is not good news. Yes your right. He said unlikely to be the HPFP as that would almost always give faults on the other cylinders not specifically 1 and 2 . They have done smoke tests there are no leaks on the high pressure side. He said that its going to be something weird or the injectors or it will need a new engine. He has replaced the spark plugs swapped around coil packs with that there is a slight improvement to cylinder two. Then also he explains that with a modern TFSI you can switch off the misfire counter but with this older TFSI you can't therefore the engine which now runs well will get up to a certain number of misfires and then the ECU will switch on the warning lights and that is currently happening in 45 seconds.
So your suggesting logging fuel pressure on the high pressure side and miss fire count while driving it. I wish I had read this before I talked to the guy to ask him if he has tried that I bet he hasn't. This would then get us into the weird stuff probability wise which I could write a book about having been a scientist like what about this and this is my theory ''it's all gone wrong'' but its slightly wronger on cylinders one and two. What could have happened is that the high pressure fuel pump only starts to leak with a lot of force on it at high speed and there is a problem with all 4 twenty year old injectors like the plastic is all shattered inside on injects for cylinders 1 and 2 the injects are literally not spraying correctly at high pressure but all cylinders are suffering because the HPFP leaks. It's just basically another Tequila sunrise a Rent a Reck and every component on the vehicle is f......
Click to expand...
What with everything else that has been replaced and the repeated mentions of the "old" injectors, I am actually a little surprised that the injectors haven't been taken off, sent away to somewhere like Injectortune and given an ultrasonic refurb plus calibration check / jet pattern analysis. Did this with our AUA and it contributed to it running better than it ever had before, and a lot cheaper than buying new injectors of unknown Aliexpress/Amazon provenance. I actually managed to remove and refit the injector / fuel rail combo myself without setting myself or the car on fire!

Being a Molecular Biologist isn't incompatible with basic car mechanics (after nearly 30 years tinkering with DNA I should know!)...
 
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