condensation on the AC box

[kolelt]

is this normal? yesterday there was condensation around the box on the outside as in, inside the truck. What was odd also was that windshield kept fogging up from the outside. When i was done driving, there was a huge puddle of water outside under the passenger. Where AC usually drains.

 

[heat]

As long as it's on the ground and not in your floors... Been awfully humid on
the east coast the last few weeks.

 

[Road Bull]

Ugh... I am currently playing the find that leak game too. Some of what you are describing seem to be symptoms of a leak in your heater core. *See fogging up windshield*

I, on the other hand, lifted up my passenger side Weathertech floor mat, to discover water on the bottom side of the mat. I just made the discovery the other day and have yet to pin the issue down.

Some red herring topics have been:
-Heater Core
-Windshield seal leak
-Firewall pass-through rubber grommet compromise
-Door Weather stripping leak
-Air Conditioning drain plug pass-through back up
-Sun roof drain block up

But because you mentioned windshield fog, I would say take a closer look at heater core.

 

[LittleCaesar]

Is the AC cold? I would take a look and see if your evaporator is freezing up.

But start with the AC drain line first.

 

[BrianSD_42]

You always seem to start unique threads bro haha.

 

[kolelt]

You always seem to start unique threads bro haha.

Lol I’m sorry. Just been having a lot of stupid issues. I’m trying to be positive. Right now, I have a odd vibration feeling happening 40mph and up. The vibration occurs when you tap on the gas pedal and when you let of. It’s also bad when you maintain a constant speed you feel the truck like vibrate/shake. I replaced my rear u-join. But that didn’t fix the problem. I’m aiming towards a bad/worn double cardan.

So my AC blows cold. It has been very humid lately in the east coast. The condensation was water. It was not coolant. The floor was dry. The fog was on the OUTSIDE of the windshield. My sun roof drains are not clogged because not long ago I have confirmed that they are not clogged. I always see a puddle on passanger side outside the truck after using the AC. Which indicates the AC drain hole is doing its job. Could this simply be because it’s so humid out and the truck is 1997 lol?

[MENTION=119532]Road Bull[/MENTION] , pull back the carpet in the passenger side. And locate the little drain tube that goes trough the firewall. And make sure there’s not water trail from it. Also, check your sun roof drain.

 

[LittleCaesar]

I would still pull the cover and take a visual peak at the evaporator to see if it is covered with dirt, etc., though as long as you don’t see any on the floor, it may just be excess water from the humidity.

Do you have a set of gauges to hook up to the high and low sides?

Get the speedo fixed btw?

 

[kolelt]

I would still pull the cover and take a visual peak at the evaporator to see if it is covered with dirt, etc., though as long as you don’t see any on the floor, it may just be excess water from the humidity.

Do you have a set of gauges to hook up to the high and low sides?

Get the speedo fixed btw?

I don’t have gauges. But my friend does. What would the gauges tell me ?

I have not fixed the speedo yet. I got a check engine light related to it P0500. Which is vehicle speed sensor. I’m waiting on a set of used oem front abs sensors. If replacing it doesn’t fix the issue. I’ll buy used “rear” sensors and reconnect them. Which in theory that should work. Because it only needs 2 sensors for speedo. I’m thinking the front ones are bad.

 

[96RedRunner]

Have you looked at site glass to check the charge of AC system?

 

[kolelt]

Have you looked at site glass to check the charge of AC system?

Not sure what you mean ? I guess I’ll have to see inside the evaporator box. And then I could have my friend hook up gauges. But if the heater code was leaking. It would be red coolant. And it would smell wouldn’t it ? Also I wouldn’t have heat.

What was crazy was, after I parked the truck. There a HUGE puddle of water right where the AC drains. Maybe it is clogged somewhat inside and it couldn’t keep up ?

 

[curryT4R]

If your AC is blowing cold, and no leaking inside the vehicle then it sounds like you're just fine and it's just due to high humidity.

I wouldn't really hook up gauges to the system unless you start experiencing issues, because although it isn't much, the gauges do release some refrigerant and holds it in the gauge lines, and no need to loose refrigerant if you don't have to.

 

[LittleCaesar]

Hooking up the gauges is nothing more than making sure the system is working well within a certain range. But if the AC performance is good, no real need to.

Good luck with fixing the ABS.

 

[phattyduck]

Could this simply be because it’s so humid out and the truck is 1997 lol?

That's exactly what it is. Cold meeting hot humid air = condensation.

The windshield fogged up on the outside because you had cold air blowing on it. Don't use the defrost mode if you are fogging up the outside of the windshield.

The AC box had some condensation because the box was cold and it was still warm/moist in the truck.

The water out the AC drain is normal too (that's the leftover condensation from the AC evaporator cooling the air over it).

If you weren't getting water out the AC drain, you might have a problem. As long as that is draining well, you are all good. It might be worth making sure the blower fan and heater box are clean, just as a maintenance item.

-Charlie

 

[96RedRunner]

Not sure what you mean ? I guess I’ll have to see inside the evaporator box. And then I could have my friend hook up gauges.

From what you describe I'm going to agree with what others are saying Humidity is your problem. I live 160 miles north of NOLA I'm familiar with humidity, typical 3rd coast weather this time of year 81*F 84% humidity.
To check Freon charge without guages, look at site glass on top of drier/accumulator that is located left of right headlight behind grille. FSM explains what to look for, what conditions you see in site glass will tell you if there is a problem with AC system charge. A low charge can sometimes create excess condensate in evap box.

 

[JRZEE2000TR4LTD]

Not sure what you mean ? I guess I’ll have to see inside the evaporator box. And then I could have my friend hook up gauges. But if the heater code was leaking. It would be red coolant. And it would smell wouldn’t it ? Also I wouldn’t have heat.

What was crazy was, after I parked the truck. There a HUGE puddle of water right where the AC drains. Maybe it is clogged somewhat inside and it couldn’t keep up ?

You must be running the AC in fresh air mode instead of re circulation mode. Your constantly dehumidifying this friggin humidity wave we have going on here in the NE. Supposed to be less humid for the next few days at least so your puddle shouldn't be so big. Anyways, your system is working just as it should.

 

[la79]

Ugh... I am currently playing the find that leak game too. Some of what you are describing seem to be symptoms of a leak in your heater core. *See fogging up windshield*

I, on the other hand, lifted up my passenger side Weathertech floor mat, to discover water on the bottom side of the mat. I just made the discovery the other day and have yet to pin the issue down.

Some red herring topics have been:
-Heater Core
-Windshield seal leak
-Firewall pass-through rubber grommet compromise
-Door Weather stripping leak
-Air Conditioning drain plug pass-through back up
-Sun roof drain block up

But because you mentioned windshield fog, I would say take a closer look at heater core.

Hey, sorry to revive an old thread but did you ever find out the issue to your problem? I’m dealing with the same issue right now?

 

[Road Bull]

Hey, sorry to revive an old thread but did you ever find out the issue to your problem? I’m dealing with the same issue right now?

I fixed mine by destroying my vehicle and getting a new one. I don't suggest this as it is a bit expensive and a righteous PITA.

Most likely what the issue was was AC related. You can pretty easily address this. The AC drain tubes get clogged and the water has no where to go but inside your vehicle. Look up AC drain clogs and I think that would fix your issue.