Random Tech Questions

[KrazyKarl02]

The Bronco 302 is having some issues. When RPMs drop, they seem to drop way too low, sometimes dieing, and sometimes just getting so low that it makes power steering difficult for a sec or two until it comes back up. Could this be a vaccuum leak? Seems like if I let off the throttle slowly, it is less likely to do it, but not always.

It has been my experience that a vaccuum leak makes my fords run a little higher rpm. It could be the idle air motor thing on the side of the throttle body.

[JB]

When idling in any gear, if I punch the gas, the RPMs drop quickly, and then it will either rev back up , or die completly.

I had a new spare IAC that I put on and I also relaced the TPS. No change. pulled the O2 and hit it with some electric parts cleaner. Also checked for vaccuum leaks. Fuel pressure is 34ish, and will jump to 42ish when the I take the vaccuum away from the regulator, which is what the Haynes says it is suppose to do. I pulled a few plugs and they all looked great. At a loss. Any more ideas? Flem?