94 Explorer XLT Runs Rough after Snow Storm & now no Power Brakes
Question:
Since mention both a rough running engine, loss of power brakes and that all vacuum connections seem secure, the problem might be something inside the power brake assembly (accumulator?) that is allowing a vacuum leak. I think the power brake unit has some sort of diaphragm and I suppose it could rupture. DS
Response:
– Hide quoted text — Show quoted text – >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
Since you lost your power brakes too, check the vacuum connection for the brakes. — Bill Replace "g" with "a" Experience is what you get when you expected something else.
Response:
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
Response:
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