1990 xj 40 recalibrate tps/ potentiometer
#1
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Anyone know how to recalibrate the throttle potentiometer on my car? I removed and cleaned it in an effort to eliminate it as the source of my limp mode transmission fault.with it out of the car I get resistance readings from 5.5 mv to .50 mv. In the car, it will only go down to 1.25mv because of the throttle stop. Even if I had a new one, I would still have to calibrate it.
#2
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Does the throttle butterfly close all the way? It should measure. .6 volts at idle(I know the haynes says .5 but trust me), the only adjustment I know of is the 2 screws on the bottom of the throttle body that allow you to turn it
for limp home mode check this Jag-lovers' Ebooks
also check this Jag-lovers' Ebooks
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for limp home mode check this Jag-lovers' Ebooks
also check this Jag-lovers' Ebooks
![Name: Screenshot2012-05-03at83927PM.png
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Size: 88.6 KB](https://www.jaguarforums.com/forum/attachments/xj40-xj81-25/164616d1501273184-1990-xj-40-recalibrate-tps-potentiometer-screenshot2012-05-03at83927pm.png)
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Last edited by limegreenclown; 05-03-2012 at 08:54 PM.
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