K
ker
97 Legacy Outback 102K. Problem just started. When I start the car
everything is OK. I get up to highway speed altenator and brake light
start blinking. Few miles later, speedometer and tack start flopping and
go to zero. Car drives ok unless I try to go to fast. Check engine light
is on because no signal from speedometer and tach. Drives ok if I take it
easy, if not starts surging, etc probably because ECM is not getting speed
signal. I drop down to 25 mph and speedo & tack come on every thing is ok.
Same thing happens every time. I have tried cleaning several grounds and
connections. It is like a connection or ground is heating up except for
problem goes away under 30 mph.
everything is OK. I get up to highway speed altenator and brake light
start blinking. Few miles later, speedometer and tack start flopping and
go to zero. Car drives ok unless I try to go to fast. Check engine light
is on because no signal from speedometer and tach. Drives ok if I take it
easy, if not starts surging, etc probably because ECM is not getting speed
signal. I drop down to 25 mph and speedo & tack come on every thing is ok.
Same thing happens every time. I have tried cleaning several grounds and
connections. It is like a connection or ground is heating up except for
problem goes away under 30 mph.