E30 Zone

Hi all, ive not long got a 318is, the fuel guage sometimes bounces about and when you tune the heaters on to full blast the fuel guage and temp guage move up a bit, ive been told this might be the si board, is the si board the the printed circuit board that the service lights are on, behind the clocks? it would be great if anyone can give any advice on this or if anyone has had the same fault and found out how to fix it

Thanks

John

Anybody now of anythink i can try befor i spend Ԛ£80 on a board, as this fault is starting to bug me as id like my car to be 100% rigth, any advice i would be gratfull of

This has come up loads of times before mate, really common problem,
if you do a search for si board you will find what you need

ive just found out that you can bay the batterys in the clocks ill tri and find some waer that sells them tomorrow

thanks anyway mate