vinayp

i am about to linearize my temp guage, but I had a question for those of you that have already done the mod.

after you calibrated the potentiometer, have you ever had to change its value again? i am asking because i wanted to replace that whole potentiometer/resister box with a single resistor (or a few in series).

basically, i would wire-up and calibrate the pot according to the instructions. then i would use an ohmmeter to measure the resistance of the pot and permanently replace it with a resistor(s) of equal resistance. this way i won't have to have that ugly box in my engine bay and i also won't have to worry about the potentiometer setting being modified by accident.

i plan to use the 25ohm resistor (237F) for initial calibration to be on the safe side.

i'd appreciate any feedback on this.

vinayp

also, how necessary is heat shrink wire cover? is there an alternative that doesn't require a heat gun?

sirjury

ive done this on two different cars. i used the potentiometer to calibrate the gauge and find the resistance value i needed then i swtiched it out with a resistor. i think i actually had two resistors in series and one in parrallel with ground shrink wrap is the cleanest but electrical tape works just fine.

jury

vinayp

great! thanks for the feedback jury. i feel better about doing this now.

btw, what resistance value did you use for calibration (the 22-25 ohm resistor, NOT the one you replaced the pot with)? and what coolant mix do you use?