1992 Ford Explorer Q&A
1992 Ford Explorer Question: Vacuum line needs plugging in, but where?
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] - mrbarnard
The pictures do not come up, says wrong maybe typing error. - ProfessorG
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!! - pushrod
ck vac diagram on under hood on label - globalhelper
We just replaced the mass flow air sensor and the purge flow solenoid in our 94 explorer. Before changing the mass flow air sensor the truck would run with it unpluged, but plugged in it skipped an...