Car was sputtering on highway, now worse, driver relays click very fast,vehicle death

[idlafie]

Check the ground wires located on the exhaust manifold side of the motor. The ground wires are connected to a metal eyelet & that eyelet is bolted to the engine block towards the rear of the motor close to the firewall. The ground wires are above the area where the oxygen sensor is located. Make sure the ground wires are making a good connection to the metal eyelet to which the ground wires are connected. You may have to cut the wires and solder them to a new metal eyelet then rebolt the metal eyelet back to the motor.

I had this issue with my S14 years ago. Turns out the ground wires shorted out where they connected to the metal eyelet. After cutting the wires and soldering them to a new metal eyelet & bolting it to the engine, the problem was fixed.

Hope this helps....

ID