Mine sticks whenever the humidity is high and in Memphis that's alot! A fingernail flick in front of the temp gauge brings up the fuel gauge. Never a problem when humidity is low!

This is from a past post about a 240 gauge: misspellings and all. Maybe it will at least give you some ideas.

Could be your gage, probably the fuel sender, even more likely, the float is filled with fuel. you can check by grounding the sender wire in the trunk. it is located under the carpet on the hump, drivers side. at the disconnect there will be three wires. brown=gound, yellow or yellow/red= prepump. the other is either brown or black, can't remember for sure, this will be the one that you ground while the key is on. grounding will make the gage go full tank. if so, bad sender or float. if not, bad gage
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Andy in St. Paul, '91 745 Regina 198K mi, '89 244 141K, '87 245 RIP

mine does that sometimes. It comes right back after I hit the clock set device.

bang on the dash..next to the gauge..

Could be a wiring problem, could be the sending unit in the tank, could be the gauge. Start by testing the wiring. Then, hit the junkyard and grab a gauge, since it's only about $2-3. If that doesn't work, it's new-sending-unit-time.

Eamon
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'Where's your common sense?' 'It left me when I was 5' http://members.sounddomain.com/ladeadhead