DougyintheBushies
TJ Enthusiast
OK I dealt with this recently-
There is a change in the diameter of the vacuum line fittings somewhere around 05-06 so not all of them will change over
One is smaller and you immediately lose vacuum
I had to take the vacuum line attachment off the back of my old switch and put it on my new one- Then everything work
I also had a little cheap vacuum tool that I got from Harbor freight that I used to check each vacuum circuit
If you have cruise you can just see if your cruise control works and if it does not you’re probably losing back him somewhere
A good example would be cruise works only at high speed when it’s getting enough vacuum or it doesn’t work at all
I have read about the new switches and the hose diameters being different. I did not swap the mode switch. All I did was removed the fan switch out of the new panel and swap it into my old panel. The po swapped the auto trans out and put in a nsg370 so no more CC but now that I think of it I noticed a vacuum line just laying around the engine bay that was not capped off (open). Maybe it went to CC before the swap? Should I cap it with a plug? Thanks Andy for your help.