Hi all,
2003 (53) 3.0i Z4
I desperately need some emergency help. I'm gonna keep it short, I did a trackday, blew my original engine as the engine ran out of oil, and got it swapped for an identical refurbished engine.
The new engine runs absolutely fine and runs sweet and pulls hard, BUT, it has 2 intermittent problems:
1. Misfire problem resulting in limp mode
The last 12 days I drove it, it has missed fired on 4 occasions, these misfires can be during cruising at 70 or under acceleration, which causes it to go into limp mode, and the only way to remove the misfire is to restart the engine, engine starts back up fine, sweet and strong and carrys on as normal until the next misfire in a couple of days. With my code reader, I can see it will misfire with a totally random cylinder each time, and usually 1 or 2 cylinders at a time. I can literally rag the car for 2 days none stop redlining every gear change and then on the 3rd day it'll randomly misfire, and then not for another 2 days, When I first got the car back with the new engine it actually misfired every 5 minutes, I couldn't even go out to buy milk, but after new plugs, coils, and cleaning the injectors, the now misfires every couple of days, but its still there!!
2. Brake warning light (amber) and traction control light resulting in limp mode
In the same time frame, 12 days, on 2 occasions while cruising on the motorway, the handbrake/brake warning light came on in amber as well as the triangular traction control light coming on together, both were on solid, and caused the car to go into limp mode, there was no powersliding or drifting taking place, just a straight line on the motorway doing 70, again the only way to remove this was to switch off the engine and back on again.
Can someone please help me with these 2 intermittent problems please? I would desperately appreciate it, thanks in advance!
2003 (53) 3.0i Z4
I desperately need some emergency help. I'm gonna keep it short, I did a trackday, blew my original engine as the engine ran out of oil, and got it swapped for an identical refurbished engine.
The new engine runs absolutely fine and runs sweet and pulls hard, BUT, it has 2 intermittent problems:
1. Misfire problem resulting in limp mode
The last 12 days I drove it, it has missed fired on 4 occasions, these misfires can be during cruising at 70 or under acceleration, which causes it to go into limp mode, and the only way to remove the misfire is to restart the engine, engine starts back up fine, sweet and strong and carrys on as normal until the next misfire in a couple of days. With my code reader, I can see it will misfire with a totally random cylinder each time, and usually 1 or 2 cylinders at a time. I can literally rag the car for 2 days none stop redlining every gear change and then on the 3rd day it'll randomly misfire, and then not for another 2 days, When I first got the car back with the new engine it actually misfired every 5 minutes, I couldn't even go out to buy milk, but after new plugs, coils, and cleaning the injectors, the now misfires every couple of days, but its still there!!
2. Brake warning light (amber) and traction control light resulting in limp mode
In the same time frame, 12 days, on 2 occasions while cruising on the motorway, the handbrake/brake warning light came on in amber as well as the triangular traction control light coming on together, both were on solid, and caused the car to go into limp mode, there was no powersliding or drifting taking place, just a straight line on the motorway doing 70, again the only way to remove this was to switch off the engine and back on again.
Can someone please help me with these 2 intermittent problems please? I would desperately appreciate it, thanks in advance!
North West Surrey
