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Car constantly in limp mode and throttle not accelerating?

Tiny
UZOMAKIY
  • MEMBER
  • 2006 BMW 330
  • 6 CYL
  • 2WD
  • MANUAL
  • 180,000 MILES
I have the car listed above 300i and the throttle not working and car in constant limp mode.

I have changed the following parts below as I was trying to fix the problem:
1Throttle body
2Throttle pedal
3Mass air flow meter
4Coils
5Map
6Vanos
7camshaft both

Please, I need help guys. Ps the code for electric water pump was because I disconnected it before scanning for error code via INPA.
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Tuesday, May 23rd, 2023 AT 1:42 PM

4 Replies

Tiny
UZOMAKIY
  • MEMBER
  • 3 POSTS
Expand. Once you start the car the RPM goes up and down, the throttle does not respond when a press it.
I have use ista to check the wirings from dme to throttle body and throttle pedal there where no cut.

When I use ista or INPA the pedal potentiometer signal read which show it work and once I start car the rpm jumps. But once I use INPA to realign the pedal potentiometer through DSC the rpm become normal and pedal works fine but once I shut the car and restart it goes back to how it was before.
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Wednesday, May 24th, 2023 AT 1:39 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

Wow, that's a list. By chance, do you have the P codes? My manual provides multiple P codes for the manufacturer's codes you provided. Each one takes me in a different direction. See pic 1

Also, have you checked the differential pressure sensor (pic 2)?

Let me know.

Joe

See pics below.
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Wednesday, May 24th, 2023 AT 7:26 PM
Tiny
UZOMAKIY
  • MEMBER
  • 3 POSTS
Once you start the car the rpm goes up and down, the throttle does not respond when a press it.
I have use ista to check the wirings from dme to throttle body and throttle pedal there where no cut.

When I use ista or INPA the pedal potentiometer signal read which show it work and once I start car the rpm jumps. But once I use INPA to realign the pedal potentiometer through DSC the rpm become normal and pedal works fine but once I shut the car and restart it goes back to how it was before.

Win last 7 digit - AZ87227
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Friday, May 26th, 2023 AT 1:38 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

It sounds like it loses power when the ignition is turned off. By chance, do you have the P codes?

Let me know.

Joe
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Friday, May 26th, 2023 AT 9:36 PM

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