Hello,
This is my first post here so please be gentle!
I bought a 2005 A3 2.0 tdi recently with the BKD engine and 90k miles and l love the car to bits!
However, I find I do have a few issues and am hoping I can have a little advice!
The car is a reluctant starter from cold; if I press the accelerator down whilst turning the key the car quickly fires and the initial surge in revs seems to smooth things, if that makes any sense?
If I don't press the accelerator whilst turning the key/operating the starter it wheezes and sounds like it is running on 3 cylinders for a second or two , I sometimes get a puff of smoke too but don't know what colour it is, it definitely doesn't sound healthy!
From hot starting is immediate and perfect.
The car performs great, although as it warms up the idle seems lumpy, this seems to disappear once hot?
Lastly on the motorway I can't make up my mind if there's a misfire/judder or not!
It goes like stink but there is definitely more vibration than I would like through the body of the car , at first I thought that it might be that the wheels need balancing but after having searched on here am thinking that the PD injector loom might be dodgy?
I've tried scanning the engine with a cheap code scanner but no faults were found?
I know how hard it is to diagnose faults like this online but do these symptoms sound like the loom is at fault?
I'm really hoping the injectors are OK!
I should add I changed the fuel and air filters recently , it uses no coolant at all but the economy seems poor, I'm getting 45mpg on my daily 40 mile motorway journey to work?
I'm hoping to buy the proper Ross Tech VCDS cable soon, are there any tests I could do to diagnose what is wrong?
Would it be worth changing the PD loom anyway, but at about £100 to buy it's a bit expensive to change needlessly?
Cheers.
This is my first post here so please be gentle!
I bought a 2005 A3 2.0 tdi recently with the BKD engine and 90k miles and l love the car to bits!
However, I find I do have a few issues and am hoping I can have a little advice!
The car is a reluctant starter from cold; if I press the accelerator down whilst turning the key the car quickly fires and the initial surge in revs seems to smooth things, if that makes any sense?
If I don't press the accelerator whilst turning the key/operating the starter it wheezes and sounds like it is running on 3 cylinders for a second or two , I sometimes get a puff of smoke too but don't know what colour it is, it definitely doesn't sound healthy!
From hot starting is immediate and perfect.
The car performs great, although as it warms up the idle seems lumpy, this seems to disappear once hot?
Lastly on the motorway I can't make up my mind if there's a misfire/judder or not!
It goes like stink but there is definitely more vibration than I would like through the body of the car , at first I thought that it might be that the wheels need balancing but after having searched on here am thinking that the PD injector loom might be dodgy?
I've tried scanning the engine with a cheap code scanner but no faults were found?
I know how hard it is to diagnose faults like this online but do these symptoms sound like the loom is at fault?
I'm really hoping the injectors are OK!
I should add I changed the fuel and air filters recently , it uses no coolant at all but the economy seems poor, I'm getting 45mpg on my daily 40 mile motorway journey to work?
I'm hoping to buy the proper Ross Tech VCDS cable soon, are there any tests I could do to diagnose what is wrong?
Would it be worth changing the PD loom anyway, but at about £100 to buy it's a bit expensive to change needlessly?
Cheers.