Am I being paranoid?

[freakazoid]

The recent woes I had with my 335i is documented on this site (gearbox, diff, injectors, plugs and most recently inlet camshaft replaced).

I got my car back last week Thursday after the camshaft replacement and I am not sure if the car did this before. When I apply the brakes in order to come to a dead stop, the revs will decrease but shoot up slightly, then decrease and shoot up. It does this a couple of times before dropping to idle revs.

It is as if the throttle is being blipped. Is this normal on a Steptronic as for the life of me I can't remember if the car did this before the camshaft replacement.

 

[ChefDJ]

Sounds like my old Jetta, but was a manual.

I was told that taking away the "self-revving" would take away some of the car's power, so I left it. Every traffic light I stopped at, people thought I wanted to dice them. They were so wrong.
:=):

 

[akash]

It depends on how quick you are coming to a stop and from what speed.

It sounds normal to me, like the car dropping through the gears as the car slows down.

I have a steptronic box on my 335i and i can make the car blip the the paddles.

Let me check for you in the morning how my car behaves and i will post the findings for you.

 

[akash]

So drove mine this morning and it's normal:thumbs:

 

[freakazoid]

So drove mine this morning and it's normal:thumbs:

It is going to take me a while before I have confidence in my vehicle. Any small noise and I think something is going to break.

I think I must get the car to someone knowledgeable about the 335i to put my mind at ease or to highlight areas that will need fixing or maintenance.

I am also feeling a bit hurt as on Monday a 7R smoked me Did not know it was a 7R until it went pass. Thought it was a GTI when it was behind me.

To make matters worse, on Wednesday from standstill, a GTI 7 opened up a gap of easily 100m To make myself feel better I am telling myself the GTI had some work done to it as it's exhaust was popping and crackling as it accelerated.

What I am picking up is that when I floor the pedal my car feels dead for like 3 - 4 secs and than wham it accelerates.

 

[DieselFan]

Have your adaptions reset. Might make a difference.

Nothing a jb4 can't fix ey.

 

[M3_devil]

If the reset does not help log your car to check wastegate duty cycle. Could be vacuum issues which results in lag. This will be the delay you feel before boost kicks in.

my symtoms was same and was my pressure convertors that control the wastegate vacuum.

 

[DieselFan]

M3 devil out of curiosity. Did you replace the pressure converter? And did you check the filter on it?

 

[freakazoid]

Have your adaptions reset. Might make a difference.

Nothing a jb4 can't fix ey.

Can I reset myself or do I need to take the car in?

With MP gone I have been looking at options to make the car a bit "hot". To go down that path I would prefer to start with a car that has all the issues ironed out.

---

If the reset does not help log your car to check wastegate duty cycle. Could be vacuum issues which results in lag. This will be the delay you feel before boost kicks in.

my symtoms was same and was my pressure convertors that control the wastegate vacuum.

One thing that did change this week is the fuel I use. I religiously use Caltex as it gave me the best performance and consumption when I had my 320i. Shell use to kill the 320's performance.

After reading one of the old fuel threads on here where someone recommends Shell V Power I thought I'd give it a try again. Will fill up with Caltex when this tank is done to see if it makes a difference.

 

[Magneto]

Have your adaptions reset. Might make a difference.

Nothing a jb4 can't fix ey.

Can I reset myself or do I need to take the car in?

With MP gone I have been looking at options to make the car a bit "hot". To go down that path I would prefer to start with a car that has all the issues ironed out.

---

If the reset does not help log your car to check wastegate duty cycle. Could be vacuum issues which results in lag. This will be the delay you feel before boost kicks in.

my symtoms was same and was my pressure convertors that control the wastegate vacuum.

One thing that did change this week is the fuel I use. I religiously use Caltex as it gave me the best performance and consumption when I had my 320i. Shell use to kill the 320's performance.

After reading one of the old fuel threads on here where someone recommends Shell V Power I thought I'd give it a try again. Will fill up with Caltex when this tank is done to see if it makes a difference.

---

I stay away from Caltex and Shell. Only Engen BP and Sasol for my 135i

 

[M3_devil]

Hi

The pressure convertors I coul blow right threw the inlet and outlet. This meant that the vacuum convertors were unable to old vacuum on the outlet side which explained why my duty cycle was all over the place.

 

[freakazoid]

Have your adaptions reset. Might make a difference.

Nothing a jb4 can't fix ey.

Can I reset myself or do I need to take the car in?

With MP gone I have been looking at options to make the car a bit "hot". To go down that path I would prefer to start with a car that has all the issues ironed out.

---

If the reset does not help log your car to check wastegate duty cycle. Could be vacuum issues which results in lag. This will be the delay you feel before boost kicks in.

my symtoms was same and was my pressure convertors that control the wastegate vacuum.

One thing that did change this week is the fuel I use. I religiously use Caltex as it gave me the best performance and consumption when I had my 320i. Shell use to kill the 320's performance.

After reading one of the old fuel threads on here where someone recommends Shell V Power I thought I'd give it a try again. Will fill up with Caltex when this tank is done to see if it makes a difference.

---

I stay away from Caltex and Shell. Only Engen BP and Sasol for my 135i

---

Would love to use Sasol but closest garage is 10km away. Have not seen any in the Cape Town CBD or surrounds?

 

[Drama]

Hi, with regards to the original post, my 2013 135i dct does the same. I've only got it for less than a month now. When I come to a stop, the idle drops to about 500, then slightly picks up then drops back to the normal idle position. It's bugging me a bit but maybe it's normal...


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[freakazoid]

If the reset does not help log your car to check wastegate duty cycle. Could be vacuum issues which results in lag. This will be the delay you feel before boost kicks in.

my symtoms was same and was my pressure convertors that control the wastegate vacuum.

You might be onto something here. Car is at BMW for check engine warning and limp mode.

Happened yesterday afternoon. Strange thing this weekend was that my brake pedal was rock hard when I started the car in the morning. Felt this on Saturday and Sunday mornings. Rest of the day the pedal was fine. This morning when I started car pedal was hard again, CEL was on and front brakes were making a strange sound.

Came across this thread on E90Post Does you brake boost hold vacuum. In one of the posts the poster mentions vacuum leak leading to hard brake pedal and idle issues.

 

[Kish2604]

The link to the DIY...

http://www.e90post.com/forums/showthread.php?t=589753

 

[freakazoid]

:argh: What do vanos solenoids cost? According to BM the exhaust one needs to be replaced.

It seems that every possible issue that exists on an N54 is on the car. Had the same issue with my E90 320i. Every known issue that there was on a 320i was on mine.

 

[Nastaliq]

Dude,
I read your other thread, and it would appear you have a lemon.
Best thing to do with a lemon, is walk away from it.

I once owned an E90 that was a blessing to drive, when I upgraded to a golf. Just after I extended the MP to 110 000kms, it started going downhill, it was cats, cylinder head gasket, and then sludge. Eventually BMW opened a PUMA case and flew in a guy from Germany to sort it out. In the end, the car was never the same and I could feel it in the way it accelerated, down-shifted etc.

I just traded it in, instead of going through the headache and not knowing whats going to fail next.

When its a few hundred rand here and there, you can tolerate that, when its a few grand here and there, my pocket got empty and it became expensive.

I don't know how deep your pockets go, but exercise caution, I know its a 335i and theres just something about it for you, but cut out the emotion and consider whether it makes financial sense to keep it.

 

[freakazoid]

Dude,
I read your other thread, and it would appear you have a lemon.
Best thing to do with a lemon, is walk away from it.

I once owned an E90 that was a blessing to drive, when I upgraded to a golf. Just after I extended the MP to 110 000kms, it started going downhill, it was cats, cylinder head gasket, and then sludge. Eventually BMW opened a PUMA case and flew in a guy from Germany to sort it out. In the end, the car was never the same and I could feel it in the way it accelerated, down-shifted etc.

I just traded it in, instead of going through the headache and not knowing whats going to fail next.

When its a few hundred rand here and there, you can tolerate that, when its a few grand here and there, my pocket got empty and it became expensive.

I don't know how deep your pockets go, but exercise caution, I know its a 335i and theres just something about it for you, but cut out the emotion and consider whether it makes financial sense to keep it.

Problem is I only got this car in December 2013, so getting rid of it is not financially viable. Best offer from BM was trade in on a Ford Focus. If they could have done a deal on an F30 320i then I would not have blinked. If I wanted a Ford I would have gone to Ford :roflol:

 

[freakazoid]

The more I research this problem the more I am convince that the issue lies with the vacuum pipes. Another thread from E90Post on same issue Vacuum line fix.

It would be tragic if this issue is the result of the N54 getting a bad name. If have read a lot of threads on different international forums with guys having the same misfire issue I have had since Feb and all have been through same list of "fixes", injectors, plugs, coils, solenoids, sensors etc.

Going to BM tomorrow and going to insist they check every hose before they touch solenoids.

 

[Showtime100]

Hey Freakazoid.
So what was the story? Did you get the issue sorted?