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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Apr-12-2018, 05:23:00 PM   #1
elcidce91
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Default Throttle Position Sensors

I drove my car several hundred miles on Monday and on returning home the car (2003 M3 conv 6mt) went into limp mode. I had it taken to an independent repair shop the next day. They diagnosed it as two TPS were bad. The front and the accelerator pedal module. They wanted to charge almost $1200 for the repair. I got them to lower the labor to 3hrs at $316 but they also wont budge on charging double the retail price of the parts or a revised total of $980. I can buy the parts online for $230 (FCPEuro).

Not wanting to spend that much I thought I could do this as a simple DYI after a little research. Maybe 2hrs of labor? The only thing that gives me pause is not knowing if there is a coding issue I would need to address. I have an inexpensive code reader at home that can clear the codes.

Can someone please give me their opinion on whether this is a simple part install diy? This is my daily driver so I want it done well.
Thanks.
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Old Thu, Apr-12-2018, 05:24:27 PM   #2
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Default Re: Throttle Position Sensors

Itís like 1hr labor max if anything


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Old Thu, Apr-12-2018, 05:28:17 PM   #3
elcidce91
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Default Re: Throttle Position Sensors

They want 3hrs.
1hr for the diagnosis, 1hr labor, 1 hr programming.
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Old Thu, Apr-12-2018, 05:40:59 PM   #4
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Default Re: Throttle Position Sensors

There are 2 sensors. One is right on top, super easy to see and get to. The other is under the intake manifold, which is probably where most of the labor costs are going. Doing the one on top yourself is definitely worth looking into. You can easily see it upon opening the hood, to see if it's something you'll feel comfortable doing. There's no special coding/reprogramming procedures required. I think the main thing for the top one is to have the right tool to get the screws off, and be careful not to strip them.

http://forum.e46fanatics.com/showthread.php?t=953713

The bottom one involves more labor because the intake manifold has to be removed. Pros or people that are familiar with removing the manifold might be able to get both replaced within an hour of actual work time, but I can understand a shop charging more hours for it.

Last edited by E30User; Thu, Apr-12-2018 at 05:44:14 PM.
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Old Thu, Apr-12-2018, 05:51:40 PM   #5
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Default Re: Throttle Position Sensors

"Front" being the one above the oil filter housing, you def do yourself! Need a Phillip's screwdriver (should be one in the trunk tool kit)...very simple and no coding. Disconnect the battery before doing it (or any electronics work). Clear the codes before starting it. The pedal one, you can prob do yourself also, but I'm not sure on coding, if required for that one...

I don't see this as 3 hours...if you are not comfortable doing this diy, see if there is another shop. But, I would suggest at the least you replace the one above the oil filter housing yourself and clear the codes. Maybe even going to the same shop you'll save 50% of your money since there is only 1 sensor left to do (assuming they correctly identified the front one and the pedal). The back one in engine bay is a bit more work to remove the airbox...

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Old Thu, Apr-12-2018, 05:51:55 PM   #6
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Default Re: Throttle Position Sensors

There's a sensor in the gad pedal as well, but start at the front one first and work your way back.
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Old Thu, Apr-12-2018, 06:20:09 PM   #7
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Default Re: Throttle Position Sensors

I asked which sensors were bad. They said the pedal and the one in the front were giving the errors.
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Old Thu, Apr-12-2018, 06:21:18 PM   #8
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Default Re: Throttle Position Sensors

Both can be installed by yourself with basic enough tools imo. Buy the parts online to save a lot of $ and install it yourself!

I'll do it for you if you're in Socal if you want.
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Old Thu, Apr-12-2018, 06:21:45 PM   #9
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Default Re: Throttle Position Sensors

Quote:
Originally Posted by elcidce91 View Post
I asked which sensors were bad. They said the pedal and the one in the front were giving the errors.
Diy both of them.

Here is pedal replacement:

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Old Fri, Apr-13-2018, 05:41:39 PM   #10
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Default Re: Throttle Position Sensors

There's no coding required here. Hell, the car should come out of limp mode on its own after you flip the key to position 2 and it runs through the EDK self-test. I would also be weary of replacing the pedal -- those use hall-effect sensors (two of them, one to measure position and the other to measure the rate of change) which almost never fail due to being magnetic, unlike the TPSs which are traditional potentiometers.
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Discussing Help me bring a new exhaust to market in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)