Acceleration

ACCELERATION. I drive a 2000 323ci, when I start driving on a cold engine the car will drive and accelerate perfectly until I will shut if off. And that's when the problem starts, after the engine is warmed up and been driving, when I shut it off and start it again the problem appears.
When I reach 4 + rpm the car will have a faster acceleration every two second, meaning you will feel the a strong push and then soft.
Car never had any problems of over heating or anything that I can think of that would effect this. Any ideas for the problem?

I also looked on previews questions. And none was really sounded like my problem.


Thanks.

The first step in any diagnosis is to have the codes scanned (most auto parts stores will do this for free), write down the findings, and post those results here.
That will give us some idea of what to do next.

Did it,
The Sesondary Air System. Came up, I read about it. From what I understand it helps the car start, or something like that.
But thanks.
What do you think?

Originally Posted by Fast Bob

, write down the findings, and post those results here.
That will give us some idea of what to do next.

Originally Posted by 323cinahar

Did it,
The Sesondary Air System. Came up, I read about it. From what I understand it helps the car start, or something like that.
But thanks.
What do you think?

You did not give the answer that I asked for....we need the specific codes, like P0123, etc. What you just posted is of no value.

P1421 p1423 p0340...

Originally Posted by 323cinahar

P1421 p1423 p0340...

0340 is the issue. Your cam sensor is bad, your intake side cam sensor to be exact. Easy to replace and about $100.

The other codes are indeed smog system related, but won't cause your car to run weird. The cam will though.