issue with my 91 z28 i pulled and replaced the vss and still no read on the dash...and i cannot find anywhere that sells the gears for the speed sensor (although mine looked fine when i pulled oout the old sensor... im lost and im alsomst ready to throw a tarp ove rthe car ive had sooo manyy electrical issues with her S.O.S PLEASE HELP ME

 

IIRC ,
in 91 the VSS signal goes to computer 1st then to the speedo.
check that wiring

 

can this be done via multimeter? or should i visually inspect wires? ughhh this dash is a pain int the ***** to disassemble any suggestions on how to check properly? i dont wanna half *** anything

 

Please do check it with a meter. Saves you a TON of time. Test resistance to make sure the wires are connected

Here is the circuit
http://www.austinthirdgen.org/mkport...F_and_vin8.jpg

 

do i look for ohms or volts?

 

bump

 

Resistance

Put a lead on the beginning and end of the wire to test everything in between. A result of 1 (open circuit) or several hundred (short/bad connection) means problems. You want a low number say 20 or under for a good connection

 

i dont wanna sound like an idiot but do i check from the plug at the vss on trans or elsewhere? it is only two wires that come from the plug do i test that?

 

TTT

 

bump

 

Pull the harness and VSS connector up into the engine bay where you can reach it easily

Unplug the ECM and run continuity tests from ECM pins to the connector

If those check out do the same from the ECM to C207 D

If thats ok, repeat from C207 to cluster

If those all check out then the issue is not in the wiring

 

SO, you are saying to put one probe of the meter to the yellow wire on the vss harness and the other to the yellow wire of the vss on the actual pcm? If so, what am i setting the meter to? I assume ohms ,but what setting on ohms?

 

Yes, and set it to the smallest resistance setting you have, most have a 20ohm setting