How to clean ventilation system on 84-88 trucks
#21
The problem with low volume air-flow is it causes the evaporator to freeze up if AC is very strong and causes even low or no flow, so I really wanna do this.
Yup. I use M.E.K. - LOL! I once found a quart can of MEK in a storage locker on our ship and people reacted like we'd have to decontaminate the whole place - LOL!
Last edited by RAD4Runner; 02-16-2016 at 12:42 PM.
#23
Having just done this recently
(yeah - I SHOULD have replaced the blower box when I had the EVAP box out, but at the time I didnt know I HAD a spare blower box)
yes - you can take the blower box OUT without taking the EVAP box out.
It helps to PEEL BACK the carpet. That extra 1/8 inch of clearance is crucial to getting the box in/out
If a recall, a 1/4 drive 8mm flex socket head and some 1/4 drive extension bars to a "T" slider bar - are really helpful.
See some pics on this thread
https://www.yotatech.com/forums/f116...71/index2.html
If you have a mouse nest jammed agains the EVAP core, then build a mouse proof cage to the cowl intake.
Borrow or get a "see snake" (they've dropped in price since I got mine) and check to see how bad the eval box is.
At a minimium, use a shop vac toe clean it (if it needs it)
(yeah - I SHOULD have replaced the blower box when I had the EVAP box out, but at the time I didnt know I HAD a spare blower box)
yes - you can take the blower box OUT without taking the EVAP box out.
It helps to PEEL BACK the carpet. That extra 1/8 inch of clearance is crucial to getting the box in/out
If a recall, a 1/4 drive 8mm flex socket head and some 1/4 drive extension bars to a "T" slider bar - are really helpful.
See some pics on this thread
https://www.yotatech.com/forums/f116...71/index2.html
If you have a mouse nest jammed agains the EVAP core, then build a mouse proof cage to the cowl intake.
Borrow or get a "see snake" (they've dropped in price since I got mine) and check to see how bad the eval box is.
At a minimium, use a shop vac toe clean it (if it needs it)
#24
So I was told I would have to remove the whole dash/gauge cluster etc. to replace my evap and expansion valve on my 1986 pickup. This shows otherwise. I just want to be sure that I can do it from underneath before I start ripping and tearing. It's a 37 year old system and I want to keep R12 but I want to replace ALL components to be sure this system lasts for years to come as R12 isn't cheap these days. Plus with my Weber conversion, I can't afford any more compressor load that 134A might put on the engine as I don't have an idle bump solenoid anymore.
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