Dorman vacuum harnesses

[jodawill]

Has anyone else had issues with the Dorman vacuum hoses? I replaced all the vacuum hoses a couple years ago and it seems like some of the connections come apart very easily, and I noticed tonight that the PCV hose leaks at the connection points. I have oil in my air filter.

 

I'm wondering if I might have just gotten my harnesses from a bad batch or if they really are just that bad. I suppose I could just use some zip ties if I have to.

[AnotherOldJeepGuy]

FWIW I have used zip ties at multiple locations for the same reason.

[llhat]

only issue I have experienced on my 89 4.0 using these harness assemblies is the 'J' hose connecting to the air filter housing.

original harness "J" hose had a increase in ID on one side to connect,  new dorman are straight internal diameter both sides.

I believe I have documented this in past threads..    finally took the suggestion of a poster here to 'press' a section of hard tube from old harness into the nipped 

existing on the air filter housing.  that "j" hose now fits without being overly stretched and ultimately cracking.

next 'project' in my instance is to perform the modification of the rear vacuum tube to valve cover...  drilling out the plastic connector and using a larger internal diameter vacuum line....  procedure shown on boards here also.. 

 

as far as the rest of the vacuum fittings on these dorman units,  mine have always appears secure with no need for zip ties or clamps

[jodawill]

Thanks for the feedback. I'll try the zip ties.