Speedometer not working at all

Reply Subscribe

Thread Tools

Search this Thread

Aug 14, 2013 | 07:58 AM

domprim

Thread Starter

Junior Member

Joined: Aug 2013

Posts: 4

Likes: 0

Car: 1992 Z28 Chevrolet Camaro

Engine: 350 chev- stock

Speedometer not working at all

The speedometer is not working at all in my 1992 Z28 Camaro. I checked the speed sensor and it seems to be fine. I have no clue what the problem is! Anyone else have this problem? If so, please help me

Aug 14, 2013 | 05:24 PM

vetteoz

Supreme Member

iTrader: (13)

Joined: Apr 2005

Posts: 7,736

Likes: 14

From: Not in Kansas anymore

Car: 82 Z28

Engine: 383 SP EFI/ 4150 TB

Transmission: T400

Axle/Gears: QP 9" 3.73

Re: Speedometer not working at all

Quote:

Originally Posted by domprim

I checked the speed sensor

How ?

Aug 14, 2013 | 06:31 PM

domprim

Thread Starter

Junior Member

Joined: Aug 2013

Posts: 4

Likes: 0

Car: 1992 Z28 Chevrolet Camaro

Engine: 350 chev- stock

Re: Speedometer not working at all

Quote:

Originally Posted by vetteoz

How ?

I got an auto electrician to check if anything was worn out ad to see if any power was still coming from it when it spun. All seemed to work fine.

Aug 14, 2013 | 08:00 PM

vetteoz

Supreme Member

iTrader: (13)

Joined: Apr 2005

Posts: 7,736

Likes: 14

From: Not in Kansas anymore

Car: 82 Z28

Engine: 383 SP EFI/ 4150 TB

Transmission: T400

Axle/Gears: QP 9" 3.73

Re: Speedometer not working at all

Quote:

Originally Posted by domprim

I got an auto electrician to check if any power was still coming from it when it spun. All seemed to work fine.

So on a 90 - 92 TPI car, the speedo signal from the VSS unit in the trans goes to the ECM first ,then the speedo in the dash cluster.

Pull the engine codes and see if there is a code 24 (VSS ) code showing.

If there is no code then it means the fault is after the ECM or with the speedo itself.
If there is a code them the VSS signal is not getting to the ECM