Coolant temp problem

[inferno27468]

Hi wverytime I'm driving for a while after the cars warmed up my temp gauge moves over to the hot side a lil bit and I'm not leaking anywhere I've replaced the sensors and blead it the whole coolant system is good but when I tap the cluster right on the gauge the needle goes back to where it should and I've already gotten a new gauge and I'm stuck now lol anyone have this problem before?

[Andy348]

Do you have the grounding nut on the back of the temp gauge (cluster)?

[bmw325csi]

Because e30 brah.

[jlevie]

It sounds like you need to remove the cluster, open it up, and at least tighten the nut behind the temperature gauge. I re-flow solder on that and the fuel gauge for better a better contact surface.

[dnguyen1963]

This topic has been posted so many times...check your ground nuts and check your SI board/batteries.

[inferno27468]

I'm stuck because the nut on the back is tight and I have new batteries for the si board soo idk where to go from there... What and where is it that I need to solder?

[dnguyen1963]

You need to look at the SI board under a magnifying glass to see if there are any cracks. Re-solder those cracks will fix your problems.