Help please. E46 issue
Discussion
Hi there, ok I'm new to the site and new to BMW's. Just bought my first one. It's a 2003 E46 318i, 100000 miles. Car itself is in pretty good shape and drives nice, I'm liking it so far except the cutting out issue. I'm sure it's been posted before and I have done some research, but could do with a couple of pointers.
Ok so problem is driving down the road and car cuts out completely, no warning. If I'm going fast enough, it seems to restart itself. Red battery light comes on and once restarted I have tranction control and a yellow brake light. If driving slow and I have to restart the car manually, several attempts to get it going. Today however it died, restarted it and died again 4 times back to back ?? I've been reading it could be the crankshaft position sensor, I tried to change this yesterday but failed miserably at getting the inlet manifold off. Before I attempt the job again, does the problem sound like the crankshaft sensor ?? Also why does a red battery light, traction control and yellow brake light illuminate when the car finally restarts ??
Ok so problem is driving down the road and car cuts out completely, no warning. If I'm going fast enough, it seems to restart itself. Red battery light comes on and once restarted I have tranction control and a yellow brake light. If driving slow and I have to restart the car manually, several attempts to get it going. Today however it died, restarted it and died again 4 times back to back ?? I've been reading it could be the crankshaft position sensor, I tried to change this yesterday but failed miserably at getting the inlet manifold off. Before I attempt the job again, does the problem sound like the crankshaft sensor ?? Also why does a red battery light, traction control and yellow brake light illuminate when the car finally restarts ??
Ok so crankshaft sensor changed !! And yes there were a few swear words involved lol. On initial start up after changing sensor, the car had a really rough idle. After it warmed up the idle seemed to settle down, the car doesn't feel quite right when driving either. I've also noticed a constant repetative "pst pst pst pst pst" noise coming from the intake manifold/injector area. Could this be an air leak from gaskets ??
Helix, the sound is coming from the middle to back of the engine rather then the chain area, which I thought was at the front of the rock cover ?? Correct me if I'm wrong, I'm no expert. Just a hands on person that likes to get stuck in, backed up with some research. In fact that's how I'm going to describe myself from now on lol.
CupOfTea, yes I changed a cam sensor as I had to wait for crank sensor to come into shop as codes were crank and cam sensor. However I have reverted back to original now.
Ok so this is this afternoon's events and a bit of yesterday. Yesterday first, did a 16 mile round trip to work and car died a total of 12 times. 90% of journey is motorway. So today decided crank sensor wad going to be changed. Managed to change it only to discover this lumpy idle issue. Drove the car a couple of short journeys around the block and to a shop. Erased fault codes and none showing back up after every trip. The misses wanted to go get a buggy from Petersfield, for me a 25 mile round trip, was dredging it but thought I'd have some company if car died completely. Car was driving very sluggish but didn't die once :-) yay. Got to destination and checked codes, P1159 was showing as pending. Before I got back home the engine light was on and the only code showing is the same but stored and red. Quick lookup and it came back as fuel trim issue ?? But for other makers it was saying the MAF or MAP ?? I'm guessing a failed/dodgy sensor/connector would cause the the sluggishness and poor fuel economy?? Also after the run when I checked codes the second time, the idle hunted and rose to 1500 rpm on its own and dropped of. It did it quite slowly but I was considering turning engine off incase it didn't stop :-/
How can an engine increase rpm that much on its own ??
Sorry for the essay.
CupOfTea, yes I changed a cam sensor as I had to wait for crank sensor to come into shop as codes were crank and cam sensor. However I have reverted back to original now.
Ok so this is this afternoon's events and a bit of yesterday. Yesterday first, did a 16 mile round trip to work and car died a total of 12 times. 90% of journey is motorway. So today decided crank sensor wad going to be changed. Managed to change it only to discover this lumpy idle issue. Drove the car a couple of short journeys around the block and to a shop. Erased fault codes and none showing back up after every trip. The misses wanted to go get a buggy from Petersfield, for me a 25 mile round trip, was dredging it but thought I'd have some company if car died completely. Car was driving very sluggish but didn't die once :-) yay. Got to destination and checked codes, P1159 was showing as pending. Before I got back home the engine light was on and the only code showing is the same but stored and red. Quick lookup and it came back as fuel trim issue ?? But for other makers it was saying the MAF or MAP ?? I'm guessing a failed/dodgy sensor/connector would cause the the sluggishness and poor fuel economy?? Also after the run when I checked codes the second time, the idle hunted and rose to 1500 rpm on its own and dropped of. It did it quite slowly but I was considering turning engine off incase it didn't stop :-/
How can an engine increase rpm that much on its own ??
Sorry for the essay.
https://drive.google.com/file/d/1n5aMj_UXnrLWanlrx...
There is a link to the engine doing it's thing. I sprayed cleaner around the intake to head area and I did get a reaction, but only once I stoped and moved the can out of the engine bay. So not actually sure where it exactly is but it's there. So I think new gaskets are in order.
There is a link to the engine doing it's thing. I sprayed cleaner around the intake to head area and I did get a reaction, but only once I stoped and moved the can out of the engine bay. So not actually sure where it exactly is but it's there. So I think new gaskets are in order.
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