Having a problem fixing the tachometer on my 95 Pontiac Bonneville. Can you help?

Tiny
LEISER13
  • 1995 PONTIAC BONNEVILLE
  • 126,000 MILES

When turning the ignition on the tach has power. I've replaced the interrupter the cam sensor, crank sensor and the dash cluster. I checked all wires going to the ignition module and to the back wall. I don't know where to go with this. I'm thinking its not getting a signal from the module. Or do you have anyother suggestions.

Do you
have the same problem?
Yes
No
Sunday, November 20th, 2011 AT 2:58 AM

3 Replies

Tiny
KHLOW2008
  • EXPERT
  • 41,940 POSTS

The ignition module should send a pulse to the tachometer when engine is runnig. Use a DVOM to check for pulsing voltage at the White wire from the Ignition Module to test if it is sending the signal.

Please consider a donation to help us answer more questions.
Was this
answer
helpful?
Yes
No
Sunday, November 20th, 2011 AT 4:42 AM
Tiny
LEISER13
  • MEMBER

Ok replaced the module and we now have a signal coming from the white wire for tach. However still nothing going on with tach. Is there a relay or does the computer send the signle to the tach.

Was this
answer
helpful?
Yes
No
Tuesday, November 29th, 2011 AT 4:07 AM
Tiny
KHLOW2008
  • EXPERT
  • 41,940 POSTS

You would need to test the tachometer and if it is bad, the meter cluster would have to be replaced.

Please consider a donation to help us answer more questions.
Was this
answer
helpful?
Yes
No
Wednesday, November 30th, 2011 AT 4:31 PM

Please login or register to post a reply.

Related Instrument Cluster Gauge Tachometer Replace/Remove Questions

Help us by donating