Originally Posted by derrickmcphate
the rpm went crazy once where is the cps located and how much are they how hard are they to change?
The CPS is located near your crank pulley to the left(if you're looking @ the engine from the front). It has (1)10mm bolt holding it in & a wiring harness connected to it. The CPS will have a nickel plated pointer on it, so you can't miss it. Now here's the wrinkle: The most easily available CPSs are the crap ones from IH & Ford(they're made in Mexico). They run for about $18-$25. Autozone & NAPA also sell their rendition of one, but I don't know how much they cost. If you can get your hands on a black IH(Part#: 1821720C99 made in USA), that would be optimum, but they're REALLY hard to find. Another option you have is to check out dfuser.com's blue IH CPS, but that one's $135. If you go with the grey Ford or IH CPS(Part#: 1876735C91) buy another one for a spare. Hang on, I'll post a pic of what the CPS looks like.