Had a friend replace the flywheel and thought it would be a good idea to replace vacuum lines too. Well he ended up going to jail in the middle of doing it all and now I am trying to finish the mess he left behind. There are a few v. lines he didn't pull all the way off yet, but are not connected at the other end. There is a three way connector on the transfer case but im not sure which line or what line goes to what or where. One of the lines look like it T's off to the top of the ******, but im not sure.
SOURCE: 1995 gmc jimmy 4wd high not working
sounds like it is loosing vacuum check all the lines for a crack even the engine lines will cause it to loose vacc. pressure. if it is not run to the vacuum reserve canister you may not have enough vacc. to hold the actuator in several times I just run new lines and that helped and not very costly.
SOURCE: Front drive, 4 Wheel drive won't engage
Check the switch on the transfercase remove the vacume lines if there is oil in them the switch has to be replaced and the lines should be cleaned out you should also check under the battery tray to make sure the boot is not ripped that controls the leaver to engage the front axel
SOURCE: Need 95 gmc jimmy vacuum diagram. I have a loose
THat goes to your map sensor. If you look very closely under your hood there will be a vac line diagram there
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Iv'e been reading about a switch on the transfer case. Im not sure I found one though. Just the three way connector.
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