|
I had the same problem on my '87 930. I had just installed a new IC and my gauge was jumping all over, especially when warm. It turned out to be bad ground. My understanding is that the intercooler, or some part of it, needs to be grounded for the signal to the gauge to work.
__________________
2016 Porsche GTS Club Coupe (60th Anniversary)
2007 Porsche GT3; 2014 Porsche Cayman S
1981 Porsche 911 SC; 1988 Porsche 944 Turbo S - Silver Rose
2010 Audi Q7 TDI; 2002 Audi A6 4.2 ; 1971 El Camino; 1966 Chevelle SS 396/360 HP; Spec Miata racecar
|