Porsche Enthusiasts Club Forum

Hi,

I've had a problem with the temperature gauge since I got the car almost 4 years ago. The needle basically does what it likes. So, I thought it was about time I at least took a look to see what is wrong. First step is to remove the instrument cluster, which I've managed to do without ripping the ribbon at the back. I'm sure I'll have some questions about this.



Anyway, as you can see from the picture, there seem to be some holes where bulb holders would fit. Would I be right that all such holes should contain bulbs or are they supposed to be empty?

Cheers,
Bryan

Hi,
Nt sure about the buld holders, suspect they for options not fitted to the car.

As for your main problem, i had the same issues. I replaced the sensor and sensor wiring connectors, and cleaned all the connections to the gauge cluster. It works fine now.

The advice I had on wayward dials was to check your balls. Rugby balls to be precise.

On the back you'll see 4 black plastic rugby ball shaped items with a central brass nut holding it on. Take those off, clean them and that may help cure an erratic needle.

Thanks for the replies guys. I think I may have found the problem. I've removed the temp/fuel gauge.



The 2 threaded brass posts are where the rugby balls are attached. Above and below each one, there is a blob of solder, only it looks like one is missing. I'll resolder that bit, replace some blackened bulbs, put it back together and see if Bob is back with my auntie.

Cheers,
Bryan

Good work Bryan. That could well be job done!!

Good job finding the problem!

Whilst you've got the cluster out, you may want to dig a bit further and check the speedo cog. This item is apt to fail over time but is easily replaced - but seems only available from USA Porsche sites - ie Pelican Parts or Paragon Products...

Dave
SA

Looks like I'm on a bit of a roll here guys. The trip reset has never worked and I now think I know why.



The Trip Reset Switch was not attached to anything, so was just floating around. When the reset button was pressed, it wasn't connecting with anything! Easy fix.

To finish the job off, I also found the missing Blanking Plate and refitted that.

Just need some bulbs to arrive before I stick everything back together, not forgetting to torque the steering wheel nut properly.

Cheers,
Bryan