Tempmatic-Feedback Pot. Adjustment
 

My 87 190D 2.5 N/A is gonna get a new feedback potentiometer and I was hoping someone has done this R+R before? How is the best way to get the voltage reading?:book: Gonna do the 3 vacuum elements as well...Any pointers? I also noticed that the 1987 supplement states that the voltage is a much tighter number than the previous models; 2.4 to 2.7V as opposed to 3.9 to 4.4V........anyone know why? Thanks! Clip

The 1987 & later cars use a different pushbutton assembly. measure the voltage on the old feed-back pot first...they are adjustable.

2.7V when at min & at least 15" vacuum on the green vacuum line to the pot.

Anyone know
 

:confused: where to measure the voltage of the Feedback Pot.??

At pins 1 & 2 of the 3 pin connector that is part of the feedback pot behind the glovebox.