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Aircon evaporator blocked


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Hey guys, I have a 2011 D4D Hilux with what I believe is a blocked a/c evaporator rad.  Blower works in all 4 stages but is weak in each stage. Drain off plug is free and drops a lot of water but somehow still holds water in the duct under the drivers footwell and when I turn a sharp corner it spills it out the duct and on too the clutch pedal and floor and when I turn the other direction it spills out onto passenger side footwell.  Doesn’t look like an easy task to remove the evaporator and just wondering if there is any quick or easy solutions. Thanks 

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There is a product called Viper Evap+ which is designed to clean evaporators without removing them. Basically just spray it on to the evaporator and start the vehicle and it self cleans, but if its as bad as you made it sound it may not do much and it only comes in a 4L bottle and you need a foam gun to spray it with so probably end up costing almost as much as just getting someone to clean it out properly.

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Just did a quick internet search. Not sure if it is in the following URL but you could potentially have a blocked drainage pipe. Water in the footwell is a sign of this.

This makes sense because after the A/C has been running and you park the vehicle, there usually is a pool of water under the vehicle

 

https://macsworldwide.wordpress.com/2010/07/12/the-evaporator-is-an-important-part-of-your-car%E2%80%99s-ac-system/

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  • 2 weeks later...

I wonder if the OP is aware it has a cabin filter ??

It's most likely blocked to buggery, hence his poor airflow and It is also possible that the drain point could be gunked up. It's hard communicating with one hit wonders who drop in for one question then you never hear back from them again...

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21 minutes ago, Tony Prodigy said:

you never hear back from them

It makes you appreciate those that make the effort to report back and advise what the end solution was and say Thank You. 

I do not mind helping anyone who ends up contributing to the knowledge base of this Forum. I learn and re-learn so much from this Forum. 

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Just now, campbeam said:

It makes you appreciate those that make the effort to report back and advise what the end solution was and say Thank You. 

I do not mind helping anyone who ends up contributing to the knowledge base of this Forum. I learn and re-learn so much from this Forum. 

For sure Ash. I'm always happy to help with what knowledge I've gained over the years. It does bother me too when someone knocks on the door here asking for help, then when we go off to have a think about a solution and come back, they're gone..

It is a little disrespectful actually, but who knows what circumstances OPs like this find themselves in, but for the least part, acknowledge the time someone has taken to assist. 

Not much to ask eh ?

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4 minutes ago, Tony Prodigy said:

for the least part, acknowledge the time someone has taken to assist. 

These days, I make a deliberate effort to be polite and considerate.

I call it payback for my past immature dumb behaviour over all of my younger years,

Something I never had was a self-entitled attitude.

No problem to social distance from lots of people with bad attitudes and behaviours.

 

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Just now, campbeam said:

These days, I make a deliberate effort to be polite and considerate.

I call it payback for my past immature dumb behaviour over all of my younger years,

 

 

I can concur with that. Been there too mate.. Age is a good cure for that I think. I look back at you my younger days and there is plenty I wish I could change but can't, so trying to be deliberately polite and considerate is a great start. I have also distanced myself from certain types of people who are kinda still stuck in a time warp of bad habits. I've long since moved on being a family man now and trying to lead by example for my little guy and also a young apprentice I have under my supervision where I work.

 

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  • 1 year later...

I have a 2007 hilux twin cab ute.

I've been getting annoying remarks from the missus about her feet getting wet.

I reckon it could be a blocked drainage pipe from the aircon. As there has been very little water under the car like usual.

How hard is it to get to and fix.

Never had a Toyota before and really have no idea where to start.

I've looked at a few google pages but always get American cars and solutions. 

WTF is a Vigo?

 

Any help from you guys (non-gender specifically intended) would be greatly appreciated. 

Cheers in advance.

 

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37 minutes ago, Just0 said:

I have a 2007 hilux twin cab ute.

I've been getting annoying remarks from the missus about her feet getting wet.

I reckon it could be a blocked drainage pipe from the aircon. As there has been very little water under the car like usual.

How hard is it to get to and fix.

Never had a Toyota before and really have no idea where to start.

I've looked at a few google pages but always get American cars and solutions. 

WTF is a Vigo?

 

Any help from you guys (non-gender specifically intended) would be greatly appreciated. 

Cheers in advance.

 

Depends how blocked it is. You can try shooting some compressed air up the A/C drainage hose that hangs underneath the car. That's what I call a reverse flush. It should dislodge whatever is covering the drainage exit at the bottom of the evap drain. I've no idea what your heat exchange box looks like so if you wanted to try and get in from the inside, you'll have to investigate this yourself unless someone else here has done it before. 

After you've shot the air in, you can shoot some all purpose cleaner up there if you like if you have a big enough syringe or something capable of squirting the liquid up there.

A dirty evap coil can lead to a blocked drain because the cabin filter may have been neglected or missing in some cases. The filter serves two purposes really. One is to clean the incoming air from dust/dirt and leaves and two, to keep the evap coil fins from closing up with dirt. If the fins get clogged, air cannot pass through the coil and the refrigerant cannot boil off effectively reducing your A/C cooling efficiency.

 

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