Chirping alarm under dash

[Freddyalmost]

Hello again,it's been a while. Well we have an 03 endeavor . Had an alarm with no lights on dash on wet roads.your forum helped me to solve that one,I believe it was oil pressure sending unit.cleaned it and greased it and all is well.well last week while traveling south,after about 300 miles ,a chirping alarm sounded with no lights on dash,or leveling controls.it seems to get louder with gear shifts.maybe rpm related.it stayed on for the first 400 miles on return trip,but on next day no alarm until after about 350miles then it started again.its not the brake alarm,or antenna,best I can tell.but it definatly changes pith and volume with throttle up and down. Could use some help on this one.thanks to all,
Fred

[Unplanned Tourist]

It's the pull over and take a break alarm. Had to put that in!
Seriously though, it may be a temp warning of some sort. Is there any similarity to any other warning when something is not right. It could be that the corresponding light is burnt out. Watch all your warning lights as you turn on your ignition and the dash goes through it's diagnostic cycle.
Hope this helps.
Good Luck.

[Robert T]

Been there done it, had the same problem and fixed it. Only happen in wet conditions. The wetter the louder was the chirp.

I had to do the following.

Disassembled and cleaned the connectors.

Fuel sending unit.
Air Tank sensors, Did replace one sensor due to rust.
Jacks
Alternator
Water temp sending unit
Oil pressure sending unit

Some other computer and gauge sensors do not recall all.