Ol blue,
I know you're swamped with help requests on here... but maybe my post on 6/8 slipped by you?

 

Thanks for hookin us all up with the info Ol Blue. I'm diggin in now.

 

Welcome to CF. I'll send you a PM.
Welcome to CF.
Yes those two slipped by me. I'll send you a PM.

 

Hate to be a pain but could you hook me up with the evap procedure for a 2001 cherokee sport 4wd 4.0L? Would be greatly appreciated.

 

Ol' Blue

My 93 is showing 2 different evaps, Plate or Serpentine. No one local stocks either. Is there a way to tell, without dis-assembly?
Thanks for the PM

Ron

 

The write up with pictures was helpful. I suggest you block the wheels before starting. When in the vehicle moving the parking brake and shift levers all over the place, who knows when you might start rolling down the driveway and into the street.

I concur that the steering column, air bag, ignition switch etc does not have to come out. Just remove the knee blocker and take off the upper two column bolts and it drops down enough to allow the dash to swing away for access to the Heat/AC box.

All I need to do now is make my squealing belt shut up.

 

Thanks for the info jndirksjr. I have the info from ol blue but have reluctant to start on mine. Did you find a need to replace any of the foam components? If so, were they from the dealer parts dept.? Thanks the photos, a big help. I've still to find the better made evap core, though I'm leaning towards a four seasons brand. Thanks again.

Don

 

I replaced the foam but went to the hardware store and bought foam stripping used around windows and doors. Cheap and easy to find. I added several strips side by side in some places.

For the bulkhead seal I had a piece of that round foam pipe insulation, cut it up and good to go. Sometimes you need to think outside the box.

 

Don

I did not buy any of the foam components prior to doing the job. My plan was attempting to re-use them and if that failed I would get foam tape from HomeDepot and try that.

Anyway, by carefully cutting and slicing the foam seals from the box with a razor blade I was able to salvage and re-use them. Even if they tear apart a bit you can glue them back. You just dont want to shred or rip them to pieces. 3M weatherstrip adhesive was used to glue them back on. On the blower motor area foam seal, you only need to separate the top part where it sticks to the top half of the heater box. The bottom half stays stuck and the seal remains in one piece. After fixing the the box back together you only need to re-glue the top half of that seal.

The dryer/accumulator is not too expensive and I recommend replacing that too.

Separating the lines was the most problematic part for me. One of them was very stubborn. You might want to start the job by seeing how easy the lines come apart. Here is a video that shows the general idea. The video makes it look easy but consider yourself lucky if it goes that smooth.

 

Another snag on my job was the low pressure line attachment to the accumulator.

I had a new accumulator and low pressure line( new line since it contains a new orifice tube). The two parts did not line up perfectly and I was afraid the o-ring would not seal right.

The two mating surfaces were not flush. I chose not to try and draw it together with the nut in fear of screwing things up. I determined that the stud hole in the new line was slightly out of position in relation to the stud on the accumulator. My decision was to enlarge the hole slightly to make up for the misalignment. This worked and allowed the parts to line up flush before cinching them down with the nut.

When it comes to AC lines and fittings, if something doesnt seam right, slow down and figure it out, If you dont you might be very frustrated at the end when things dont seal up.

 

ol'blue

would appreciate a copy of your notes for evap coil replacement for my 99 cherokee sport

tks, hobie

 

I could use a hook up too for my 2001 XJ. I know it is going to need it this year.

Thanks

 

Welcome to CF.
Welcome to CF.
I'll send you both a PM.

 

Hello I'm new to the forum, I read the first 15 pages and it seem like Ol blue is the man. My son's 98 grand cherokee has stopped blowing cold air, I tried add a can of 134a cause I notice the compressor was cycling pretty repeatedly I only took a about 1/2 a can. The liquid line was ice cold up to the evaporator inlet but the line coming out was not even cool nor was the accumulation tank, so I think the evaporator is clogged or could it be the orifice? Any way it looks like I'll have to replace evaporator so if you don't mind ol blue could send me a copy of the removal procedures if you have it thank you.

 

Welcome to CF.
I'll send you a Private Message.