2013 V6 throttle body - Multiple failures

noiseguy

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Jul 27, 2012
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Is there a TSB out covering the 2013 Mustang throttle bodies? I'm on my 4th one at 80,000... the first two were changed by dealer (second one weeks after first) at 50,000, on 3rd failure at around 65,000 realized it's a 4-bolt 15 minute job (and you can limp the car home) and did it myself, this time using aftermarket. It's lasted a year, to 80,000, and I just put in another one and am sending last replacement in on warranty failure.

What's the deal with these parts? Are all the Ford vehicles doing this or is this just a problem on the Mustangs?
 
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noiseguy

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Jul 27, 2012
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Motorcraft. Not that it matters; the failure is in the sensor which is well isolated from the airflow.

I tore the unit apart b/f sending it in for warranty and posting the pictures here for posterity. The unit is driven by a simple DC motor at one end; not even a stepper motor, so the PCM apparently manages power to the motor based on feedback from sensor since power to motor does not flow through the circuit. Throttle position feedback is through a non-contact rotary sensor IC marked 316BCS. The BCS appears to stand for dual output, which serves as the failsafe mode; when the outputs don't agree it sends the car into limp-home mode. There is a magnet on the end of the throttle plate shaft which floats over the IC and which the IC "reads". Since magnets are usually foolproof expect either vibration or heat is killing the 316BCS IC and causing the failure.

On this particular TPS it would reliably put car into "limp" mode at anything over 2000 RPM. This particular part is a STANDARD MOTOR PRODUCTS S20068, not OEM, and I'd replace it with OEM if part wasn't under warranty b/c the car's throttle progression is noticeably inferior to the stock part.

Datasheet for 316BCS (similar if not exactly this one) here: https://www.melexis.com/-/media/files/documents/datasheets/mlx90316-datasheet-melexis.pdf
 

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David Young

Active Member
Sep 16, 2012
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Clinton, Tennessee
On my 2011 v6, 2 years ago I got a letter saying my throttle body (working fine) will be replaced free (they did) of charge under the 'Customer Satisfaction Program 16B23'. I think it was only for a few 2011-2012 v6 Fords. I haven't read anything for the 2013 Mustangs .
 
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