I HAVE A 1997 DISCOVERY THE ALTERNATOR CHECKED OK ALL LIGHTS ARE PUSATING AND TAC WORKS SPORADICALLY ALTERNATOR WAS CHECKED OUT OF THE CAR BATTERY IS GOOD AND CHARGED AND CONNECTIONS ARE GOOD NEED HELP ALSO NO CODES SHOWING UP

 

You either have dirty and loose connections or whoever tested the alternator missed something cause it is most likely failing based on what you are describing. Put the alternator back in the truck and get it checked by someone who is more familiar with Rovers.
Mike

 

HAD ALT TESTED IN CAR WAS BAD 12 V 16 AMP INSTALLED NEW ONE STILL HAVE SAME PROBLEM TAC AND SPEED GO CRAZY ABS LIGHT COMES ON AND CAR DIES BUT LIGHTS NOT PULSATING WHAT TO DO WILL CHECK CONNECTIONS