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Old 05-19-2018, 07:29 PM   #41
PabloCruise
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My Ride: 2002 325i
Year: 2002
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Next steps in my little diagnostic thought process - disconnect throttle body connector (got to it by removing upper hose and DISA valve) and re-connect DISA and MAF and see what codes I get.

Do I still get P0221?

Or might I get P0121, which I saw once at the very beginning of this ultimate wrenching experience?

In other news, the DISA feels very much intact. No loose pin, nice spring action...
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Old 05-19-2018, 08:45 PM   #42
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Originally Posted by PabloCruise View Post
Next steps in my little diagnostic thought process - disconnect throttle body connector (got to it by removing upper hose and DISA valve) and re-connect DISA and MAF and see what codes I get.

Do I still get P0221?

Or might I get P0121, which I saw once at the very beginning of this ultimate wrenching experience?

In other news, the DISA feels very much intact. No loose pin, nice spring action...
What I get when I re-connect DISA, MAF and battery and then run a Diagnostic Report on OBD Fusion w/ throttle body disconnected is P1632 - Throttle Valve Adaptation; Adaptation Condition Not Met
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Old 05-19-2018, 09:52 PM   #43
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On a whim, I thought I would try the TPS "adaptation" procedure, since I could see down the lower intake hose to the throttle plate.

So I had my my lady hop in, floor the accelerator, then turn the key to the On position. The throttle plate opened a little, then slapped back closed.

Can anyone tell me if the throttle is supposed to open all the way when doing the adaptation procedure? I want to think yes, the pedal is to the floor, and the key is On, so why wouldn't the throttle open all the way?

There may be programming in the drive by wire to prevent that from happening, but a lot of signs are point towards a pooched throttle body...
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Old 08-11-2018, 10:52 AM   #44
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This must not come up too often for e46 folk.

I don't like searching for threads and then find a dead end where they never post the solution.

For me, replacing the throttle pedal assembly cleared up all the issues listed in this thread.

Hope that info can help others!
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Old 08-11-2018, 11:53 AM   #45
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Cool thread. Thanks for following up.

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Old 01-14-2020, 02:16 PM   #46
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Quote:
Originally Posted by PabloCruise View Post
This must not come up too often for e46 folk.

I don't like searching for threads and then find a dead end where they never post the solution.

For me, replacing the throttle pedal assembly cleared up all the issues listed in this thread.

Hope that info can help others!
Pablo, you mean you got the Throttle Housing Assembly?
I did too, now this one started acting up.
The TPS reset works, but the issue just came up this morning, and once a few weeks back.

Where did you source your throttle assembly from?
Thanks!
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Old 01-14-2020, 06:56 PM   #47
PabloCruise
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Pablo, you mean you got the Throttle Housing Assembly?
I did too, now this one started acting up.
The TPS reset works, but the issue just came up this morning, and once a few weeks back.

Where did you source your throttle assembly from?
Thanks!
Negative Ghostrider - I replaced the pedal module.
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Old 01-14-2020, 07:03 PM   #48
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Quote:
Originally Posted by PabloCruise View Post
Negative Ghostrider - I replaced the pedal module.


When you say ďpedal moduleĒ, do you mean this:




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Old 01-14-2020, 07:05 PM   #49
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Negative. I mean the throttle pedal that you press on with your foot.
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Old 01-14-2020, 09:18 PM   #50
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You must have the Hall-sensor pedal.
Mine itís just a cable to the throttle housing assembly. No sensor there.


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Old 01-15-2020, 11:08 AM   #51
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You must have the Hall-sensor pedal.
Mine itís just a cable to the throttle housing assembly. No sensor there.
Assuming you have a 323 or 328, there is throttle position sensors inside the throttle body, and it is drive-by-wire like the later 325/330.
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Old 01-16-2020, 10:04 AM   #52
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Right. In the throttle housing assembly.
I have an extra one, but will probably buy a new Hella.

My fault went away after doing the TPS reset every time the fault came out the day before yesterday. In the afternoon no misbehaving but the P0120 fault was still logged. No amber trio.

Today, all rosy.
Will take it to the shop to do a more in depth diagnostic.


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Old 01-16-2020, 12:50 PM   #53
PabloCruise
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Quote:
Originally Posted by mondrage View Post
You must have the Hall-sensor pedal.
Mine itís just a cable to the throttle housing assembly. No sensor there.


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Sorry I was not more clear - I am pure drive-by-wire: 2002 325i.

Ironically, I went to drive her this morning and got the amber trio as soon as I touched the throttle - WTF?!?

After swim practice it was all clear! No amber trio, no stored codes...

This is why my wife won't drive the car any longer, she doesn't trust it.
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Old 01-21-2020, 04:59 PM   #54
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Happened again right after start-up at lunch time, went into limp mode.

A quick re-start and all was well. Wonder if the pedal I put in (was used) is failing, or now if the throttle assembly is failing.
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Old 01-21-2020, 05:06 PM   #55
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Happened again right after start-up at lunch time, went into limp mode.

A quick re-start and all was well. Wonder if the pedal I put in (was used) is failing, or now if the throttle assembly is failing.
Read the trouble codes from both the DME and the EGS and post here. You can use BMW Scanner 1.4, INPA, Carly, or a pro level tool. Need more data to help you.
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Old 01-22-2020, 02:45 PM   #56
PabloCruise
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Read the trouble codes from both the DME and the EGS and post here. You can use BMW Scanner 1.4, INPA, Carly, or a pro level tool. Need more data to help you.
I will check, thanks.

Back on the 16th it was the one for Throttle Adaptation - P1632.
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Old 01-22-2020, 02:55 PM   #57
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I took my car to the only shop with a factory scanner.
The tech told me that the throttle housing was fine.
The issue allegedly was that the grommet that holds the throttle cable in place was missing. And sometimes thereís too much slack.
I zip tied it and no more codes since.


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Old 02-11-2020, 08:29 PM   #58
PabloCruise
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Mother f-er if the amber trio didn't light up this AM as I am merging onto the interstate.

Interstate is covered in slush, it is 12 degrees F out, in a construction zone, so no where to pull over and reset, and semis all around me.

I ASS-umed w/ the amber trio lit that there was no traction control. When I got off the interstate I tested that theory in a snow-covered parking lot - no DSC. ABS worked, but no DSC.

This is why my wife won't drive the 325 any longer, she does not trust it. Pisses me off too, I am tired of dicking with this crate.

P0221 - Throttle/Pedal Position Sensor/Switch "B" Circuit Range/Performance
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