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Old 09-19-2012, 08:24 PM   #1
Mango
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An E46Mango exclusive--a world's first! E46 gas pedal internals + kickdown delete!

First, I searched long and hard and did not see ANY photos of an E46 gas pedal on the insides. I barely even saw any discussions about it. I have no codes, but I have been trying to find out the cause of a mysterious kick or jerk of acceleration at a very specific point in the RPM band under specific throttle modulation in a specific gear.

So since I've inspected and replaced just about everything in the car like a good mango soldier should, I'm down to two things:

The gas pedal and the throttle body.

This pedal I got from eBay is from a 2005 330i. It was $40. Problem is it's an automatic pedal. I wasn't 100% sure I could remove the kickdown "switch"--I put switch in quotes because from my inspection, it's NOT a switch. It's simply a piece of plastic with a metal clicker in it! That's IT! It simply slides out. It's not even screwed in or wired. Nothing! I suspect the pedal position sensor (for auto cars) is what triggers the kickdown once the pedal is applied past a certain percentage and not by the physical clicking of the switch itself.

I was unable to remove the position sensor as it has a 5-sided security torx bit. All my bits are 6-sided. I doubt anything is wrong with it anyway I just wanted to have a peak inside.

Well to be honest I doubt this will fix my problem. I have a 2004 330 throttle body on the way I'm going to test out as well. I'd hate to think this jerk is inherent to the design of the 330. And I do have the latest Daten V41 BMW DME software.

You'll notice I also applied lithium grease to the pivot which is connected to the sensor on the other side. There was already identical grease there prior to me adding a touch more.

Anyway onto the pics!







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Old 09-19-2012, 08:38 PM   #2
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This is almost as good as Delmarco's battery thread, but he used a professional hand model and had a few bikini babes holding up the optima.

Why you no have something like that? We've come to expect more from you. Security bolt...blah, blah, blah! And, there's not a single bit of green inside that pedal. I'm replacing mine just coz of that!

Good luck figuring this out! If it doesn't work out...swap in an M52 tub28...my TB is perfectly fine!
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Old 09-19-2012, 08:50 PM   #3
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Nice start, I'm excited to see where this thread goes!

:sub'd:
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Old 09-19-2012, 09:11 PM   #4
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BMW is Japanese. So i say that is Vtech kicking in.
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Old 09-19-2012, 09:12 PM   #5
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Oh it's not going anywhere. I just replaced the pedal and went for a test drive. Still does its thing. But pedal works perfectly. So now I have a 2002 330 gas pedal for sale.

THrottle body likely will come this week and i'll install it next weekend probably.
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Old 09-19-2012, 09:44 PM   #6
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Nice delicate hand. We got ourselves an Asian mango
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Old 09-19-2012, 10:34 PM   #7
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Nice delicate hand. We got ourselves an Asian mango
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Old 09-19-2012, 10:46 PM   #8
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OMG mango is some sort of minority..never saw it coming.

this is how i pictured mango..a man of ultimate wisedom
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Old 09-19-2012, 10:50 PM   #9
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OMG mango is some sort of minority..never saw it coming.

this is how i pictured mango..a man of ultimate wisedom
that guy looks too friendly. Unlike mango

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Old 09-19-2012, 11:06 PM   #10
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Good work. Interesting to see how the pedal is built. It makes me hate it even more now seeing what's inside.

I have a jerk that happens sometimes around 20% into the throttle range. It only seems to happen in 1st gear, and it only seems to happen when accelerating aggressively. I had assumed it was an electronic issue, as it seems to be the worst after I disconnect the battery for something. It will then go away for the most part after a week or so. But it'll return every so often, then go away again. Who knows.

The DBW and CDV are so counter-intuitive as to me make a competent driver seem like an amateur in some instances. I stalled the car the first time I drove it. I haven't stalled a car in 15 years outside of this one. Every enthusiast I know that has driven my E46 has complained about the gas pedal without being provoked.

Anyways...if you find a fix, i'll buy you a beer...or at least paypal you the monetary equivalent, and possibly enough money to make a lifesized fiveightandten puppet to sit on the bar stool next to you. Sorry, but the left coast is just too far.
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Old 09-19-2012, 11:13 PM   #11
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OMG mango is some sort of minority..never saw it coming.

this is how i pictured mango..a man of ultimate wisedom
Now that sht is funny!!
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Old 09-19-2012, 11:21 PM   #12
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Nice delicate hand. We got ourselves an Asian mango
He's asian?!?!? Damn you spoiled it for me.
This is how I pictured him in my mind


Now I have this image of him


Bummer
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Old 09-19-2012, 11:33 PM   #13
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he's asian?!?!? Damn you spoiled it for me.
This is how i pictured him in my mind
lol

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Old 09-20-2012, 12:08 AM   #14
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And not a single **** was given about where he's from at least from me, all i know is he has a clean well maintained nicely modded car and that deserves my up most respect.

Wish I could say that about all of the cars on the forum, but sadly some 15,16,17,18,19 year olds are ruining an e46 out there.

Informative thread btw.
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Old 09-20-2012, 12:29 AM   #15
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And not a single **** was given about where he's from at least from me, all i know is he has a clean well maintained nicely modded car and that deserves my up most respect.

Wish I could say that about all of the cars on the forum, but sadly some 15,16,17,18,19 year olds are ruining an e46 out there.

Informative thread btw.
19 year old here. not molesting my car like the other ricecakes in my college parking lot. maintenance is #1 in my mind! and a thanks to mango and dmax and everyone else steering me in the right direction. but even i can appreciate someone like mango putting this info out there. thanks for the write up!
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Old 09-20-2012, 12:35 AM   #16
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Mr Mango thanks so much for this dissection. Great to see what's inside our cars.

Hard to tell from static shots, but does the pedal plunger move in far enough to pass between the strappish things that are wound around the wheel to pull on the spring? It all seems very Rube Goldberg.

Or if you're close enough and the price is right enough, I may just have to buy it out of curiosity.
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Old 09-20-2012, 12:38 AM   #17
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Mango you have an incredible number of people on your... ermm.... junk.
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Old 09-20-2012, 12:54 AM   #18
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Thanks five and serdar and whoever else. Yeah for sure I'll let you guys know if i track it down. it's just as you described, nick. i can prevent the kick from happening if i throttle slowly and gradually. but if i try to take off semi-aggressively, no bueno.
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Old 09-20-2012, 12:54 AM   #19
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19 year old here. not molesting my car like the other ricecakes in my college parking lot. maintenance is #1 in my mind! and a thanks to mango and dmax and everyone else steering me in the right direction. but even i can appreciate someone like mango putting this info out there. thanks for the write up!
no problem, brotha here to help
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Old 09-20-2012, 01:17 AM   #20
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Mr Mango thanks so much for this dissection. Great to see what's inside our cars.

Hard to tell from static shots, but does the pedal plunger move in far enough to pass between the strappish things that are wound around the wheel to pull on the spring? It all seems very Rube Goldberg.

Or if you're close enough and the price is right enough, I may just have to buy it out of curiosity.
hmm if i think you mean what i think you mean, yes when i depress the plunger it goes pass the straps. the rubber straps are attached to springs for pedal resistance/feel. thats their only purpose (obviously)

i'm in the west valley. i'll sell the pedal for $40 (what i paid for the 05 one) and i promise its in perfect working condition. i went through all the trouble to install the new pedal so i'll just keep it on the car.
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