Jerky clock needles...

[mcbonio]

Hey fellas,
The needles on my instrument cluster clocks do not move smoothly, they jerk and shudder about as they move.

Is this a symptom of a failing SI board battery?

[mcbonio]

Now that I think back, the service lights have never gone down since I got the car in January. Just answered my own question I think....

[mcbonio]

Are these the fellas?

http://cpc.farnell.com/gp-batteries/gp8 ... dp/BT04235

[Speedtouch]

Some had AA (not AAA as above) type Ni-Cd batteries with solder tags, while later ones had a smaller Lithium battery - you'll need to remove the SI board to check.

[mcbonio]

Before I operate on my turd, can we verify that these are symptoms of low SI batteries?

Jerky, lazy gauge needles

Wandering fuel gauge, + - to an 8th of a tank.

Needles jump when I take the key out.

SI lights have never gone down, always full green.

[Speedtouch]

Yes, these can be symptoms. However, also check the brass nut(s) on the back of the temperature gauge, as these often work loose and give an intermittent connection.