Hi fastegg, given you have 2 gauges experiencing strange behaviour, that suggests they share a common ground return. I'd grab the wiring diagram out and trace the grounds from these gauges. Its possible you may have a corroded or bad ground connection somewhere. You can also ground the sender wire at the tank and at the CLT sensor and watch the gauge. They should either go max or min reading. Most CLT sensors range in resistance from about 2-5K over the temperature range. Tank senders are usually 0 ~ 300 Ohm mt to full or vise versaOriginal engine.. original everything... I've wired up another water & oil temp gauge in the door pocket... but would be nice if the dash gauges worked properly.
Tannin sells reman gauges for the scs. I had to replace both of mine. It's usually an issue with corrosion in the board of the gauges which can be removed individually from your cluster. Tanin Auto Electronix | Auto Repairs, Sales and DIY PartsSorry... What are you talking about ?