Hi, I Have A Toyota T100, And I Am A Little Bit Confused Because The Oil Pressure Indicator Reads Normal Pressure When Cold But Almost Zero When The Engine Is At Normal Working Temperature, I'd Like To Know If I Need To Replace The Pressure Sender Unit, Or If The Problem Is Other.

Thanks In Advance.

I have a 1995 T100 that I bought when it had 32,000 miles on it. At idle, the oil pressure drops to almost zero and has done that since I bought it. It now has 128,000 and is still running fine. I would not worry about it.

That's normal. As long as the needle moves, yer good to go. Of course...don't fergit to change yer oil as required! :D