'89 Vic 5.0 random 'check engine' light and stalling.
Well, I bought this Crown Victoria yesterday.
The 'check engine' light comes on randomly, and the thing runs like crap. It almost got me hurt today on a hill. The light came on, the engine bogged down, and the vic coasted to a stop. I had my foot to the floor, and it would not go up the hill. Eventually, I let the throttle about half way out, and it started creeping up the hill. I got about a hundred feet, and the light went out, and the engine made so much power all at once that it chirped the tires. Sometimes when the light comes on, it just stalls right then and there.
Today, I was checking stuff, and there was oil in the throttle body, looking like it was coming out of the hole for the PCV valve. Not a whole lot, but enough for me to wipe it out with a paper towel.
To me, this seems like a throttle position sensor. I had an Oldsmobile act sort of like this when the TPS died on it. I will freely admit that my knowledge on Ford 5.0L EFI engines is limited. I am going to go clean the throttle body out and see if that helps any.
any other ideas about what it might be?