Hi,
I've been reading through the various online forums trying to find a solution to a very annoying problem I have with my E39 3.0 Sport (M54 engine) and all the topics for the error seem to relate to the V8 cars.
Basically, the car runs fine, has 157k Miles on the clock, until I reach and hold 46-50 MPH, at which point the car drops into "engine failsafe prog" mode. I can recreate the problem at will, basically accelerate to 50MPH, and then drop back to 46 and maintain that speed, within 50' ping!
The garage have said the error codes relate to air/fuel mixture and the tail pipe is quite black even after a long motorway run which would indicate its running rich.
The garage have said that the code reader they have is stating problems with trim banks 1&2.
So far, I have had replaced, based on the various fault codes:
- Idle control valve
- Crank case breather and all vacuum hoses
- Air mass meter
The swirl valve rattles quite a bit and is going to be replaced as its suspected that it might also be faulty, but its more about it rattling on its mounts.
The emissions light comes on as well.
I can accelerate all the way to top speed on a motorway, drive and any speed I like and she doesn't miss a beat, I can drive between 45 and 50, providing I don't maintain it, if I do "ping"!
You would be amazed though, how many people drive at that speed though.
I'm going to order a code reader today from ebay (an ELM 327 1.4a) PC based one, if anyone thinks that its not going to do the job then let me know and I'll get something else.
If anyone has seen this problem before or can give me some ideas as to what might be causing it I would be very great full, once the code reader arrives I'll post the fault codes once I have them.
- Paul
I've been reading through the various online forums trying to find a solution to a very annoying problem I have with my E39 3.0 Sport (M54 engine) and all the topics for the error seem to relate to the V8 cars.
Basically, the car runs fine, has 157k Miles on the clock, until I reach and hold 46-50 MPH, at which point the car drops into "engine failsafe prog" mode. I can recreate the problem at will, basically accelerate to 50MPH, and then drop back to 46 and maintain that speed, within 50' ping!
The garage have said the error codes relate to air/fuel mixture and the tail pipe is quite black even after a long motorway run which would indicate its running rich.
The garage have said that the code reader they have is stating problems with trim banks 1&2.
So far, I have had replaced, based on the various fault codes:
- Idle control valve
- Crank case breather and all vacuum hoses
- Air mass meter
The swirl valve rattles quite a bit and is going to be replaced as its suspected that it might also be faulty, but its more about it rattling on its mounts.
The emissions light comes on as well.
I can accelerate all the way to top speed on a motorway, drive and any speed I like and she doesn't miss a beat, I can drive between 45 and 50, providing I don't maintain it, if I do "ping"!
You would be amazed though, how many people drive at that speed though.
I'm going to order a code reader today from ebay (an ELM 327 1.4a) PC based one, if anyone thinks that its not going to do the job then let me know and I'll get something else.
If anyone has seen this problem before or can give me some ideas as to what might be causing it I would be very great full, once the code reader arrives I'll post the fault codes once I have them.
- Paul