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Topic: Tachometer inop (Read 502 times) previous topic - next topic

Tachometer inop

Changed one of my air pressure gauges and air (Hadley) horn relay. No more air leaks.  Now my problem is the tachometer is not working.  1. When I start motor tach sweeps from 0 to max and stays there or it goes to 0 and stays there.
                2. Have taken wires off and put them back on in same position.
                3. Sometimes when key is on and motor started, if gauge is indicating 0 the needle seems to tick a little.
John and Stacey Smith
Motorcade NO: 11973
1997 U295 CSGI 40'..Build No. 5036     
920 Watts on the roof..CAT Power w/fuel Inj. Programmer
2021 GMC Sierra AT4 1500
EX..2015 Jeep Wrangler Sahara
Ex 1990 U280 RSAI 36'..Build No. 3638

Re: Tachometer inop

Reply #1 –
Clean the connections. Clean ground
Swap wires around  , in that order.

Re: Tachometer inop

Reply #2 –
Connections clean and tried swapping wires around...2 white wires and 1 green.
John and Stacey Smith
Motorcade NO: 11973
1997 U295 CSGI 40'..Build No. 5036     
920 Watts on the roof..CAT Power w/fuel Inj. Programmer
2021 GMC Sierra AT4 1500
EX..2015 Jeep Wrangler Sahara
Ex 1990 U280 RSAI 36'..Build No. 3638

Re: Tachometer inop

Reply #3 –
Tach uses a simple pickup visibly located on top of bell housing between engine & tranny. Make sure wires are clean and attached. Sensor wires are known to sometimes fall off.

Gauge startup movement is just the gauge booting up with ignition power. Has no bearing on sensor connectivity.

Sensor sends pulses and an adjustable setting in the tach calibrates pulses to RPM.

Re: Tachometer inop

Reply #4 –
Re Crimp the wire ends.  A definite maybe
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Tachometer inop

Reply #5 –
Did u ever fix ur tach?
1998 u320 3600 build 5200