I've been having problems with my gauges reading wrong. First my temp gauge reads 20-30 degrees above what the scanner shows. Second my voltage gauge reads under the 13 volt mark while the scanner shows 13.4-13.9 volts. Has anyone had this problem? Any ideas about how to fix it?

 

Sounds like they're working just fine.

 

It would be nice if they read a little closer to what the ECM is seeing.

 

The gauge sender reads temperature in a different place than the ECM sensor, and the gauges are hardly precision instruments. They're not meant to give an exact value, they're to let you determine when something unusual is happening.

 

I know about the temp sender and the sensor. My problem is that the gauge reads in the red before the radiator fan even comes on. I have noticed that every once in a while the volt gauge will go up to near 13 volts and the temp gauge will start to show close to what the scanner shows, so I'm wondering if there is a bad ground or power wire to the cluster.

 

I don't think there is a real fix to these.. They definetly aren't precision gauges.. There is no adjustment that can be made to them that I am aware of.

 

You might think about getting an after market mechanical temperature gauge, it might help your piece of mind.

 

It's also possible that your gauge pod printed circuit board is on its way out.

 

Is there a way to test/repair if it's going out?

 

It's a pain in the butt, due to having to disconnect the speedometer and taking the pod out. However, once I had, I discovered corrosion in two small spots. See the photo for an example.

 

Thanks! Any pointers for removing the pod?

 

Take off the dash pad
Remove gauge bezel Torx screws and remove bezel
Remove clear gauge protector lens
Remove bolts holding in gauge pod
Remove some of the plastic trim under steering wheel
Disconnect speedometer cable
Pull out pod carefully and unplug two connectors
Pod can now be removed

Do some searching if unsure how to remove or disconnect thing like the dash pad or speedometer cable. Member JamesC showed some good photos.

 

Thanks! Pictures would be great if anyone has some.