1994 827 sterling going about 50mph the speedo will drop to zero for a few seconds then go back to reading normal no gear change occurs but s4 light flashes on dashboard
1994 Rover 800 2.7 sterling

i can be driving down the road about 50mph and the speedo needle drops to zero for a few seconds then returns to normal but a green s4 light flashes on the dashboard but it seems to drive ok with no gear change when i stop and turn off the ignition then back on there is no light flashing and it drives normaly

Problem added: May 10, 2022 (2 weeks ago)

Rover 800
Year: 1994
Variant: 2.7 sterling
Problem Category
Electrics, ECU, Warnings & Lights

Replies and fixes

A few possible causes . You could test your battery voltage and also alternator charging rate . Check wheel speed sensor / wiring . Instrument cluster fault is another possibility .

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