Hey guys,
Wanted to get some advice on my 170hp A4 Avant, BRD engine. Only owned the car a few months but I've been having an issue where the car will go into limp mode on the motorway in 5th/6th gear sometimes.
I can do the same journey, on the same conditions and sometimes the car will go into limp mode there/on the return, and sometimes it will be fine. I'm sure you guys know but limp mode is painful, quite frequently I'm holding up traffic as the car refuses to go above 40 on an incline, seems like the turbo isn't working at all.
Most of the time when the motorway is clear enough I can turn the engine off and restart, and it will be fine for a little bit but go back into limp mode.
During limp mode I get a flashing glow plug on the dash, and a few times an EML. This usually disappears, last time the EML light went away after a day, I started the car in the morning and it was still there, went to the shops later on in the day and it was gone. The flashing glow plug goes away on every restart.
Now, I have taken the car to a mechanic who is a family friend (because it's cheap) but he keeps going on about the DPF which I'm almost certain is not the case.
In my reading, it seems like people generally say to check the boost hoses or the actuator, but I'm not really sure where/what I'm looking for, and I don't have a vacuum pump.
Another mechanic has told me it's almost certainly the turbo veins, so I should look into getting a carbon clean but again this doesn't look like it will give the turbo a proper clean like it seems like it needs, I'd rather fix the issue properly rather than spend however much on a clean only for the issue to return, if it even fixes it.
So, just wanted some advice from you guys on which direction to go, or if any work can be done myself I'm open to it. The little work I've done on the car thus far has been extremely difficult due to very rusted bolts, well over half are either rounded or stripped so doing anything takes a lot longer than it should!
Cheers guys.
Wanted to get some advice on my 170hp A4 Avant, BRD engine. Only owned the car a few months but I've been having an issue where the car will go into limp mode on the motorway in 5th/6th gear sometimes.
I can do the same journey, on the same conditions and sometimes the car will go into limp mode there/on the return, and sometimes it will be fine. I'm sure you guys know but limp mode is painful, quite frequently I'm holding up traffic as the car refuses to go above 40 on an incline, seems like the turbo isn't working at all.
Most of the time when the motorway is clear enough I can turn the engine off and restart, and it will be fine for a little bit but go back into limp mode.
During limp mode I get a flashing glow plug on the dash, and a few times an EML. This usually disappears, last time the EML light went away after a day, I started the car in the morning and it was still there, went to the shops later on in the day and it was gone. The flashing glow plug goes away on every restart.
Now, I have taken the car to a mechanic who is a family friend (because it's cheap) but he keeps going on about the DPF which I'm almost certain is not the case.
In my reading, it seems like people generally say to check the boost hoses or the actuator, but I'm not really sure where/what I'm looking for, and I don't have a vacuum pump.
Another mechanic has told me it's almost certainly the turbo veins, so I should look into getting a carbon clean but again this doesn't look like it will give the turbo a proper clean like it seems like it needs, I'd rather fix the issue properly rather than spend however much on a clean only for the issue to return, if it even fixes it.
So, just wanted some advice from you guys on which direction to go, or if any work can be done myself I'm open to it. The little work I've done on the car thus far has been extremely difficult due to very rusted bolts, well over half are either rounded or stripped so doing anything takes a lot longer than it should!
Cheers guys.