Hello! I recently joined the forum after lurking around for some weeks, it seems like you guys are a great community
I recently bought a 02' 1.4 petrol for my girlfriend which she plans to commute with when summer comes. Got the car quite cheap since the mileage is high and it has some issues.
The main issue is the rough idle where it bounces anywhere between 600-1000 rpm. It behaves nicely once I start driving it, but vibrates a lot at traffic lights and intersections when I have to stop. The low oil pressure warning also comes on intermittently after driving it for a while, but disappears again. It seems this correlates with engine RPM as well, as it does not come on if i drive above 2000 rpm (sufficient speed for the oil pump??) I've been searching around the forums trying to troubleshoot, but am currently on the brink of giving up and buying another A2 (TDI this time) with better service history..... :/ I love the A2-platform with its aluminium space frame and versatility!
List of things I have done:
- Replaced oil pressure switch, camshaft position sensor and knock sensor (^see link below from "A2-freun" with ECU cutting signal because of misfire)
- Cleaned throttle body, MAP sensor and EGR
- Replaced all 4 injectors (matching set since the internal resistance on the old ones varied quite a bit)
- Bought new oil separator (not yet installed), cleaned crank breather hoses
- Flushed engine to remove potential sludge
- New oil and filter
List of things the previous owner SAYS he did (the parts look new though):
- New plugs, ignition leads and coil
- New timing belt, water pump and oil pump
* The diagnostic scan shows error "Injector circuit malfunction" P0201, P0202, P0203, P0204
* I have tried manually forcing throttle adaptation with different guides with disconnecting the battery etc...
* I'm trying to get ahold of a VagCom nearby to force this adaptation
* Have read about camshaft dipping and blocked crankcase ventilation
-> I am running out of ideas and it keeps getting more expensive (hehe, what can you expect from such an old car).
I do however like tinkering and fixing stuff and consider myself fairly mechanically inclined so..... Any suggestions?
Best regards
- Xzorot
Link describing similar symptoms:
^
I recently bought a 02' 1.4 petrol for my girlfriend which she plans to commute with when summer comes. Got the car quite cheap since the mileage is high and it has some issues.
The main issue is the rough idle where it bounces anywhere between 600-1000 rpm. It behaves nicely once I start driving it, but vibrates a lot at traffic lights and intersections when I have to stop. The low oil pressure warning also comes on intermittently after driving it for a while, but disappears again. It seems this correlates with engine RPM as well, as it does not come on if i drive above 2000 rpm (sufficient speed for the oil pump??) I've been searching around the forums trying to troubleshoot, but am currently on the brink of giving up and buying another A2 (TDI this time) with better service history..... :/ I love the A2-platform with its aluminium space frame and versatility!
List of things I have done:
- Replaced oil pressure switch, camshaft position sensor and knock sensor (^see link below from "A2-freun" with ECU cutting signal because of misfire)
- Cleaned throttle body, MAP sensor and EGR
- Replaced all 4 injectors (matching set since the internal resistance on the old ones varied quite a bit)
- Bought new oil separator (not yet installed), cleaned crank breather hoses
- Flushed engine to remove potential sludge
- New oil and filter
List of things the previous owner SAYS he did (the parts look new though):
- New plugs, ignition leads and coil
- New timing belt, water pump and oil pump
* I have tried manually forcing throttle adaptation with different guides with disconnecting the battery etc...
* I'm trying to get ahold of a VagCom nearby to force this adaptation
* Have read about camshaft dipping and blocked crankcase ventilation
-> I am running out of ideas and it keeps getting more expensive (hehe, what can you expect from such an old car).
I do however like tinkering and fixing stuff and consider myself fairly mechanically inclined so..... Any suggestions?
Best regards
- Xzorot
Link describing similar symptoms:
^
[1.4 AUA] Electrical problem injection/ignition: Help please from France
Dear German A2 friends, This is my first posting here, as Bret recommended I ask your advice. I have a long ongoing problem with my A2 1.4 petrol. I would be most grateful if you could give me some advice. Below is my last post on the A2OC website on the subject: My Audi A2 has now been with my l...
a2-freun.de
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