2000 Volvo S80

TSDAIGLE

MEMBER
2000 VOLVO S80
6 CYL
FWD
AUTOMATIC
147,543 MILES

Previous day drove 170 miles with no problems the next day we got a little snow and rain needed to go back 170 miles to portsmouth NH got y helpabout 1 mile and the speedometer and tach stopped working then air bag urgent temp gauge dropped to cold then fuel gauge engine started running rough it would bog down pick back up over and over again drove home it died while driving started back up long crank time but does restart tach is ok then tach drops along with temp gauge then engine will either start running rough or will race at about 2000 rpms everytime I shut off this repeats then I went out and check engine light is and rest of dash lights and gauges r inop the codes I have r p1633 for abs concern I had previous and p1631 theft I havent had this code any help would be great

1 Reply

VOLVO SERVICE ADV

MECHANIC
175 POSTS

ONE OF THE FAULTS THAT COMES TO MIND, IS A MISSING VEHICLE SPEED SIGNAL FROM THE ABS MODULE, WHICH CAN AFFECT THE OPERATION OF THE SPEEDOMETER. ALL THE SYMPTUMS YOU ARE NOTING CAN BE RELATED TO SEVERAL DIFFERENT COMPONENTS: ABS MODULE; DISPLAY INFORMATION MODULE; CONTACT REEL; CENTRAL ELECTRONIC MODULE; ETC. THE BEST SCENARIO IS TAKING IT TO A DEALER FOR DIAGNOSIS. THIS WAY THEY CAN PULL THE FAULT CODES AND DETERMINE WHAT THE VEHICLE NEEDS. MAYBE IT WILL BE JUST A MATTER OF PERFORMING A SOFTWARE UPGRADE TO ONE OF THE MODULES. THERE ARE JUST TOO MANY POSSIBILITIES IN REGARDS TO REPAIRS.