Tachometer going nuts, engine isn't. - Toyota Nation Forum : Toyota Car and Truck Forums

HoboJoe · 09-11-2005, 05:22 PM

Alright, my tach is going up and beyond 8,000 rpm when it should be at about 4750-5000. I have no clue what to do and this is not a joke either. Help is greatly appreciated. It's a 93 camry v6xle.

HoboJoe · 09-11-2005, 05:58 PM

Oh hell no! Now the speedometer is acting sluggish!

HoboJoe · 09-11-2005, 07:25 PM

Nobody knows?

I know someone does.

97camryman · 09-11-2005, 07:35 PM

Well can you verify that the engine speed is actually somethiong else? There is a signal wire that goes to the tach that signals engine rpm. Seems like the odometer is something else because it reads off a speed sensor located at the back of the transmission. There is a drive gear that is spun by the differential and outputs to a three pin plug and those wires send the signal to the instruments. Sounds like an instrument cluster or computer problem to me. Check for loose connections. Other than that I dunno.

HoboJoe · 09-11-2005, 07:37 PM

Thank you. Thought this was gonna go dead. I'll get back there tomorrow and check the connections.

FRANKENCAMRY · 01-19-2006, 10:42 PM

HoboJoe, Did you find the problem? My tach is occasionaly jumping about 1K and making a loud bussing noise. Let off the gas and it stops right away.