94 XLT No Power Brakes

[Michael B.]

Well we finally dug out of the snow here near Baltimore. Once we cleared the vehicle I noticed some strange things on our 1994 Ford Explorer. In order to clear the Explorer from its parking space it was necessary to rock it back and forth for a little bit to get enough forward momentum to get to asphalt. Anyway, once cleared it was running very rough and it felt as I
lost the power to my power brakes.

I figured it may have been snow and ice packed in the wheels so it has not been driven since, just giving the snow a chance to melt. 50 degrees here today so it has melted-still no power on the power brakes.

The second thing I noticed when I turn the vehicle on now is that the tack fluctuates between 1600 and 600 rpms. After several minutes in settles to about 600 but it still runs rough. I noticed that the IAC valve looked
burned around the electrical connection so I changed it this afternoon. That seems to have taken care of the high revs upon starting but it still runs rough.

It also sounds like it lost a vacuum connection but I checked all the connections I could see and did not observe any disconnected vacuum hoses.

Its a 1994 Explorer XLT with 145,000 miles.

TIA for any suggestions. Its the wife's daily driver so I need to get it right and soon.

Mike

 

[jimbo74]

maybe it needs an oil change as well? leaving a truck sitting for a long time messes things up..... have you checked fluid levels? if in freezing temps, maybe the brake fluid is frozen, or was contaminated and somehow is messing things up now....

 

[Bill MacLeod]

Sure sounds like a vacuum leak to me.Check the vacuum port at the rear of the upper intake manifold. Some have a plug on one of the nipples that may have popped off. Also check out the vaccum hose at the brake booster. It may be loose or even cracked.

Bill

 

[Michael B.]

Jim and Bill:
Thanks, I'll relook the engine this a.m. for any disconnected hoses. Mike