Oils gauge on my truck goes absolutely nuts when idleing. Any ideas what it could be?

I have a 2003 Ford Ranger 3 Litre. I recently had some problems with the PCV valve and replaced it (the valve worked fine, I tested it). Afterwards, every time I'd stop and a stop light after going probably above 45 it would rapidly go up and down. If I got off the interstate it would move so much you could here it tapping against the pin. A couple days ago I had to disconnect (and reconnect) the battery, and now the guage moves much more frequently, and the" check gauge" light likes to flash on and off, and turns on briefly when I shift (its and automatic). Even after all this it stabelizes right as I open the throttl.

Ford Ranger or Jeep Cherokee?

Which 4X4 would be better as a daily driver, transporting drums and guitars to gigs, and towing a 26ft airstream occasionally? I need a truck or SUV that is reliable, cheap to maintain, and built to last. I live in the UK, and don't have much choice because the bigger American trucks like the Ram or Silverado are hard to find over here

What's the average cost of an engine replacement?

I have a ford ranger 3.0 v6 with 112k miles, blown engine, my mechanic is usually extreemely cheap ($30 for spark plug replacement on The same ranger 3.0 v6) but hes charging me 1,000 to replace the engine which seems a little much. Am i right?

What transfer case with a c6 transmission?

I have a 1981 Ford f150 that has a c6 transmission bolted up to a 302. I'm currently swapping a 1991 Ford Ranger 4x4 from a 2.9l to a spare 5.0/302 motor that I have in my shed. I was wondering if I could put the c6 transmission on the ranger? Also if I can what transfer case to use with it?

Why doesn't my ebrake work?

I have a 2004 ford ranger 2.3 with manual transmission. Yesterday I went to push in the ebrake to park it for the night and I guess I pressed to hard and felt a snap. Now the ebrake doesn't work. Do I need to change the cables or readjust them?