Is the ECM messin up my speedo?
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Joined: May 2008
Posts: 110
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From: Mishawaka, IN
Car: 1992 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: limited slip
Is the ECM messin up my speedo?
My speedo only works when you get on the gas. Its a 92 RS so it's electronic.
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Is the ECM messin up my speedo?
The ECMs in the TBI cars don't have anyhting to do with the VSS. There is a separate 4-out buffer box that converts the mag VSS signal to pulses streams. These streams each go to the speedo, ECM, and cruise.
RBob.
RBob.
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From: Rowlett, TX
Car: 1988 GTA
Engine: 5.0 TPI
Transmission: T5
Axle/Gears: 9 Bolt, 3.45
Re: Is the ECM messin up my speedo?
I would try replacing the VSS first, that would be more likely to go bad than the buffer box or speedo.
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