Makes sense.

I'm thinking the same. I want to try a couple things first, but I'm sure I'll end up replacing the signal wire from the VSS to the cluster.

See any problem with that? It doesn't have cruise control BTW.

 

I am really confused.

The VSS has 3 wires going to it. On this car:

> one wire is ground
> one wire is supplying 12+ volts (battery voltage)
> one wire is suppling 5 +/- volts (this SHOULD be the signal wire)
***These readings were taken at the VSS connector, unplugged from the VSS itself***

If one wire is already supplying voltage, why the hell is the signal wire energized?

 

There are several devices (speedometer, ECU, SRS, ABS, and cruise) connected to the signal wire. They may be exerting a "pull up" on it (connected to voltage source through resistor, the sensor pulls the wire to ground).

If you were to jump the signal wire to ground rapidly on and off, the speedometer may go up if it's working. That's just conjecture though, never tried it on an actual car.

 

i have a 95 del sol engine and everything is ok with it, its just the seed sensor, the wiring or the ECU that i have a problem with. my speedometer works fine. and the check engine light is on, but we have checked the sensor and tested it. im just wondering if anyone can help me with this. and also when we checked the speedometer wires going to the ECU the voltage in the wire was 9 volts when my book says it should be at 5. is it a problem that its at 9?

 

No, 9V is fine.

The VSS plug is a common problem. The plug terminals can become corroded and damaged. The fix is to cut off the VSS plug and replace it with one found at a junk yard.

 

the check engine light is still on though

 

What is your point?

 

it most likely wont pass emissions.

 

Using an automatic ECU in a manual car or vice versa will cause a speed sensor code.

 

I have never heard of this. I know that code 19 will be thrown if you have a auto ECU and a manual transmission.