Tach shows 300-1000 rpm's only

[Former_rotorhead]

Upon start up my tach reads 300 rpm's. At what should read 5k+ rpm's it only shows 1k at most. By which I mean it is getting some sort of a reading and always moves if the engine is running.... but never goes over 1k rpm's. My motor is definitely running over 1k rpm's. Also, my temp gauge recently stopped reading anything. Unsure if this is related.

[mike_sekinger]

I would first double check your earths for these kind of instrument problems.

If the engine is running smoothly then I doubt that it is ECU related.

Mike S

[73JPS]

You could also check the OBD II readout of engine RPM to confirm the ECU output is good.

Edited September 12, 2009 by 73JPS