The 90-92 Camaro used a different speedometer set up than the prior or later years of the Camaro. The circuit board that drive the speedometer motors is located in the gauge cluster housing.
These circuit board are are failing. They have been failing for several years. Typical symptoms range from the speedometer not working at all, to it working intermittently or jumping around. Diagnosing the problem can be tricky if you don't have the equipment or knowledge to do the proper testing.
There are many post on the internet describing replacing a resistor or capacitor to do the repair. Sometimes this does fix the problem. Of recent weeks we have had several circuit board sent in for our speedometer circuit board repair service that have had repair attempts made by the owner. On several of these circuit boards we have seen new replaced resistors burned and burned circuit board traces. After seeing these very damaged boards come in for repair we would like to provide some information that may help the hobbies mechanic with these repairs.
- De-solder all the resistors and replace them with new ones.
- De-solder all the capacitors and replace them with new ones.
- De-solder the crystal oscillator and check it for proper operating frequency and voltage range at frequency (low and high voltage).
- Check resistance of all traces and contact points before reassembling.
If you feel this type of repair is beyond your ability or you just don't want to spend the time, we are here to help. We can usually have your speedometer circuit board repaired and shipped back to you in 3 days.
You can find our 1990-92 Chevy Camaro Speedometer Circuit Board Repair Service here