What do I do now?

[ChiTahoe]

You can try THIS It's from another forum and page 2 has pictures. Someone posted it here today. The cleaning may help it work better =) It's a way to clean the evaporator.
Good luck!

 

[Stresst]

So it's a pretty drastic jump in a/c temps when the outside temp may just go up to 85ish. See, that tells me it's something like the low pressure switch on the a/c, or even something with the controls or actuator doors. If the a/c works at 80 degrees out, but not at 85-90, I don't think it's the fan or evaporator. Something is telling the a/c to stop working correctly when the outside temp is warmer. Just for kicks, have you tried changing the vent when it's 85+ out and see what happens? Meaning, turn on the a/c and switch the vent to defrost, or to your feet, or anything and see if it changes anything? Do you have rear a/c? How is that affected?

What do you mean by low pressure switch and actuator doors?

I will try changing it to vent or defroster next time its hot outside.

Yeah, I have rear a/c. To be honest I never checked......Have to take a look.

 

[taylorjm]

The actuator doors I'm talking about are the ones that control where the blower air is coming from. Does it flow over the cold a/c coils, does it flow over the warm heater coils or neither. If the controls aren't working, or the actuator doors are binding, or anything like that, the a/c might be working fine but the air just may not be blowing over the right set of coils. Is it the automatic climate control system or do you manually turn the dial to warm or cold? Check the rear air, that might help to figure out what's happening. If the rear air works fine, then it's probably something in your control system or blending doors. If the rear air doesn't work, then it's something else.

 

[Stresst]

The actuator doors I'm talking about are the ones that control where the blower air is coming from. Does it flow over the cold a/c coils, does it flow over the warm heater coils or neither. If the controls aren't working, or the actuator doors are binding, or anything like that, the a/c might be working fine but the air just may not be blowing over the right set of coils. Is it the automatic climate control system or do you manually turn the dial to warm or cold? Check the rear air, that might help to figure out what's happening. If the rear air works fine, then it's probably something in your control system or blending doors. If the rear air doesn't work, then it's something else.

I gotta check that out, thanks for the advice! Better yet my insurance company thanks you cause im about to blow this pig up! Its bad enough im getting less then 10 mpg around town, getting 10 mpg while sweating my nuts enough is the last straw! LMAO!

---------- Post added at 11:20 PM ---------- Previous post was at 11:19 PM ----------

I just checked the fan, there doesnt seem to be any play (or at least anything noticeable to me) and when I give it a whirl it will not spin more then a quarter turn or maybe half a turn. Is this normal? I never checked this before......

 

[SunlitComet]

Sometimes during a inspection or testing it is possible some freon may be lost in the process and they might say you need more for which you would have to pay for. Sometimes. I am reading you right you just said that about vehicle speed and temps. You are running with a lack of airflow or the compressor might be losing its pumping action. I don't have specific numbers for our trucks but a reputable a/c service place should be able to measure for proper high and low side pressure differentials for a given outside temperature. I just don't have any in my tech data yet. The idea is if you have a very high high pressure and a hardly existent low side you have a clog some where. If both sides are close to each other it is a sign of a weak compressor. I have a method of testing compressor but it requires removal and tools you probably can't rent or borrow.

 

[taylorjm]

Sunlitcomet is right about that. A good set of high/low gauges should be able to tell you what's going on. Didn't you say you took it to a shop? I'd take it somewhere else. I know lots of places around here will hook it up and check it for free. That would at least tell you if you have a clogged orifice or somewhere else, or if your compressor is weak. Take his advice!!

 

[Stresst]

Sunlitcomet is right about that. A good set of high/low gauges should be able to tell you what's going on. Didn't you say you took it to a shop? I'd take it somewhere else. I know lots of places around here will hook it up and check it for free. That would at least tell you if you have a clogged orifice or somewhere else, or if your compressor is weak. Take his advice!!

Where are you located?

 

[Stresst]

Just a quick update, I had the sever duty Hayden fan clutch instated today. Guess what?? That isnt the effin problem! I even put a small can of freon in but neither gave me an improvement. Tomorrow im going to have the front evaporator cleaned. I hope that is the issue cause im running out of ideas.

 

[taylorjm]

Did you ever check the rear air or try turning it to defrost or the foot registers and see what happens?

 

[Stresst]

Did you ever check the rear air or try turning it to defrost or the foot registers and see what happens?

Pretty much the same thing, it's hard to measure the temp of the defrost but the rear is the same as the front.