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Throttle Positon Sensor - Is this the right fix?

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Old Nov 14, 2015 | 08:00 PM
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siegel242
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1998 C43, 2001 S500
Throttle Positon Sensor - Is this the right fix?
I have just acquired a one owner 2001 S500 with 49,000 miles.

I have the same symptoms that have been attributed to a bad Throttle Position Sensor in that I will lose the ability to accelerate while driving and will have to wait for the motor to "catch up" to the gas pedal. This will also cause the "check engine" MIL.

However, the MIL will clear on it's own after driving and not having a slow acceleration incident. I have found that the slow acceleration seems to be triggered by pushing the gas pedal past the kick point. If I don't floor it than it functions normally. But I can't live like that.

I have read a billion threads on this issue but haven't found one that mimics my situation. My first instinct is to replace the TPS anyway but I just wanted to make sure there wasn't another issue I wasn't aware of. Any insights would be greatly appreciated.

Thanks!
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Old Nov 15, 2015 | 01:20 AM
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S-series 2003 S500 4matic
Replace the fuel filter, your description matches a failing filter.
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Old Nov 15, 2015 | 02:24 AM
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JBs C63 PP( wifes car ), Mc Laren Pxx(toy), 2013 Mustang GT 5.0 ( DD ), ML 6.3 ( winter DD )...
Originally Posted by MikeKerr7
Replace the fuel filter, your description matches a failing filter.
Yes, that's exactly what I thought!
Rule of thumb on our car's:
First try replacing parts that are less expensive, worked for me alway's that way...and I saved a ton of money
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Old Nov 15, 2015 | 06:01 PM
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siegel242
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1998 C43, 2001 S500
Thanks for the quick responses, will order the filter today.
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Old Dec 24, 2020 | 12:36 PM
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2003 Mercedes C240
Originally Posted by siegel242
Thanks for the quick responses, will order the filter today.
Did replacing the fuel filter fix your issue? I'm having a similar issue (https://mbworld.org/forums/c-class-w...e-driving.html)
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Old Dec 24, 2020 | 01:11 PM
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siegel242
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1998 C43, 2001 S500
Ended up replacing the TPS with a used one off eBay, car ran great after that. Wish I still had it.
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Old Dec 24, 2020 | 01:52 PM
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Thanks!
Originally Posted by siegel242
Ended up replacing the TPS with a used one off eBay, car ran great after that. Wish I still had it.

thanks! I’ll give it a try. Happy holidays!
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Old Dec 24, 2020 | 03:14 PM
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2003 Mercedes C240
Originally Posted by siegel242
Ended up replacing the TPS with a used one off eBay, car ran great after that. Wish I still had it.
One other question. We’re you able to change just the sensor or did you have to change the entire throttle body?
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Old Dec 25, 2020 | 03:06 AM
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No you change the accelerator pedal , the actual pedal you step on
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Old Dec 25, 2020 | 10:10 AM
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Originally Posted by tusabes
No you change the accelerator pedal , the actual pedal you step on
Thank you!
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