Ok tonight for some odd reason my gauge went from around 150 to 50 back and forth really quick. It did this twice. I drove it about 10 minutes after that and it never happened again. At first I thought it was a ground, but wouldn't a bad ground make it go all the way to 0 then back up. What are the chances it could of been air in the lines.

 

Anyone have any suggestions ?

 

Could be air in the system(low on coolant)0r maybe the thermostat is starting to act up.

 

I don't think its the thermostat because its only about 3 months old.

 

wire coming from the sending unit is loose.. its 1 wire located in the side of the head under the dizzy. clean it, make sure its tight.

 

Ok, its an after market gauge but I will see if this one is loose.

 

after market guage on the stock sender? if so your reading will be all wack-o. each guage is calibrated to each sender, or vise versa. after market guage on stock sender will make for weird results.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Urban Business &raquo;</TD></TR><TR><TD CLASS="quote">after market guage on the stock sender? if so your reading will be all wack-o. each guage is calibrated to each sender, or vise versa. after market guage on stock sender will make for weird results.</TD></TR></TABLE>

I'm not that dumb, its on the sending unit that autometer sent me.