My 94 ranger v6 started to run all the way to high on the oil and temperature guages. The battery went bad ( i know now it was drained by what ever problem i have)
I replaced the battery, the guages then worked, for 1 day, then the same problem, both peged out on high. I replaced both temp and oil sending units, did not fix,
I have looked for bad wire cant find any, replaced the instrument cluster, still not fixed, I am at a loss of what to do. Has any one had this problem and if
so how can i fix it. Thank anyone for response.

 

Do they max immediately when ignition on? Or take time to rise to max?

 

And do they behave the same way if they're disconnected?