My 1992 Ford Explorer XLT 4dr 4wd Auto 4.0 V6 has begun suddenly running rough and the check engine light comes on. It happened after I replaced the O2 sensor, when I was reaching behind the engine to get the O2 sensor wiring, and ended up pulling up that AND a vacuum tube from alongside the transmission fluid tube. Here are links to pictures. I cannot find where this vacuum tube should be plugged in. Does anyone recognize it and have suggestions about where it should be connected? [url=http://postimg.org/image/bd0olnog9/][img]http://s20.postimg.org/bd0olnog9/connection.jpg[/img][/url] [url=http://postimg.org/image/5fwt4u7bd/][img]http://s20.postimg.org/5fwt4u7bd/engine_compartment_1992_Ford_Explorer_XLT_4dr_4w.jpg[/img][/url] [url=http://postimg.org/image/3ljyn3kax/][img]http://s20.postimg.org/3ljyn3kax/vacuum_junction.jpg[/img][/url] [url=http://postimg.org/image/oma080nt5/][img]http://s20.postimg.org/oma080nt5/vacuum_tube.jpg[/img][/url] [url=http://postimg.org/image/6tog056kp/][img]http://s20.postimg.org/6tog056kp/Veiw_from_Drivers_Side_Fender.jpg[/img][/url] [url=http://postimg.org/image/zfcx2sfpl/][img]http://s20.postimg.org/zfcx2sfpl/view_from_Passenger_Side_Fender.jpg[/img][/url]
Vacuum line needs plugging in, but where? on 1992 Ford Explorer
by mrbarnard in Fresno, CA on February 06, 2014
3 answers 2 comments
ANSWER by ProfessorG on February 06, 2014
The pictures do not come up, says wrong maybe typing error.
COMMENT by mrbarnard on February 07, 2014
Here is a link that should work to the pictures: http://postimg.org/gallery/2hu3fss4a/ Thanks!
COMMENT by ProfessorG on February 07, 2014
The vacuum diagram shows 2 vacuum sources, one is where the PCV valve connects, by itself, and another where the brake booster hose is attached. That is the one that shows the line that is loose goes to, and also has the pressure regulator attached to the same vacuum port. See if this helps.
ANSWER by pushrod on February 06, 2014
Put your finger over the end of the hose, if it has vacuum present on the hose then it goes down to the transmission 'vacuum' modulator valve.... If NO vacuum is present then it goes to a vacuum source on the intake manifold. You should be able to hear this vacuum source leak. You may also feel around the intake for a vacuum leak, when you touch it the sound will change and engine will smooth out. There is where the hose hooks to the engine! Otherwise look under hood at the hose diagram or google it to see if a diag. can be found. Finally, you can always have a mechanic hook the hose back up for you! ★Drive the vehicle, if the trans doesh't shift right it goes to the vacuum modulator on the trans. IF the hvac (heat/ac) doesn't work right then that is where it goes and you should hear this vacuum leak!!
ANSWER by globalhelper on February 07, 2014
ck vac diagram on under hood on label
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