[Chop]

Noticed this morning my temp gauge has started moving under revs, as i accelerate it drops.
Its not getting hot, it sits in its normal position but when i'm getting up to speed and hitting 70-100 the needle drops if i take my foot off and the revs and speed die down the the needle goes back up?
Anyone seen this before?

[royce]

mine did that when the top hose split and it was running out of coolant

[royce]

Could be your fan isnt locking up anymore either

[Kermy87]

Hey mate, check the temp sencor on the manifold , either the female spade terminal wire is loose on the sencor( get a pair of pliers and crimp it a bit and put it on again). ... Or the actual sencor has a wigly terminal on it, pull it out put in in a vice ( not on the thread) on the flat nut and give it a lil punch with a hammer and chisel and tighten it up), try that,,, if it's rooted super cheap auto barn carry them for like $15

hope this helps
cheers kermy87

[Chop]

Well the coolant level and all the hose are good at the moment.
My sierra used to do it with the fuel gauge but that stopped when i change senders.