Tach and MPG gauge inop

[shortcircuit]

Just purchased this 83 944. Came with the gas gauge, tach and mpg gauge inop.
Repaired fuel sender, had a bad ground inside the float system.
Now I'm looking for some help on what I should look at first about the tach. I assume that the rpm and mpg are in the same gauge cluster that maybe it's a ground or power the the cluster. The stock radio has been changed if that might have something to do with it. I'm open for directions. thanks

[Ctan]

Check for loose connections on the back of the cluster. My 84's had a lot of the old plastic connectors not connecting securely. Vibration could have knocked it loose.

[shortcircuit]

Thanks, I will try to check that today. That's what my thought was, that it was behind the cluster. thanks

[914efi]

There are separate connectors for both the tach and the MPG gauge, check out the other thread here over the past few days for MPG gauge info.

[shortcircuit]

Well I found that someone must have kicked out the connector under the das. Plugged back in now the tach works fine. Need to look around under the dash a little more to see if I can find maybe another plug loose.

[shortcircuit]

Ok guy's the connector that I found under the dash unplugged.... Also fixed the MPG gauge. All gremlins gone for now. Thanks for all your help.

[Icey1174]

See how easy and cheap these cars are to fix!

[shortcircuit]

So far!!! Yes!!!!