'85 Shark temp guage inop, instrument cluster has no batteries

[Dash01]

With no batteries in the instrument cluster, is it possible for the temperature gauge to work?

Red overheat light works when its wire is shorted, needle briefly twitches when its wire is shorted. Otherwise, temp gauge seems dead.

Contacts have been cleaned in the instrument cluster, no leaky or bad capacitors observed, nor any bad solder joints. Batteries gone, evidence of prior leakage.

What does this tell us?

[Looghis]

your temp sender might be broken, you could have a wiring issue as well. i think a wiring fault would be more likely than a bad sender. theres a great writeup on mye28 i think on how to bypass the si board. i did this bypass on my 635, which had a non working speedo and a non working temp gauge, and they both worked perfectly afterward.

[tschultz]

Curious if you could dig up a link^^

I had issues with my gauge, and it was simply a bad connection of the BLAU connector on the back of the gauge cluster. Cleaned it up and all is working now.

[alpinacsi]

You should be able to disconnect and remove the SI board without affecting the gauges.

[IB635]

My temp gauge did not function until I replaced the melted batteries, after that, works great.

[Looghis]

Curious if you could dig up a link^^

I had issues with my gauge, and it was simply a bad connection of the BLAU connector on the back of the gauge cluster. Cleaned it up and all is working now.


here you go, had it bookmarked

http://www.mye28.com/viewtopic.php?t=94937