I feel ripped off... '13 S-Crew air conditioning Ford refuses to fix.
09-23-2013, 11:42 AM
#81
Interesting I am surprised they have a TXV/TEV (Thermal Expansion Valve) as they cost more. Work better, but cost more and have more moving parts to fail. It was definitely written up as 'replaced TXV'? It may have been mentioned here/elsewhere but if the sensing bulb on the TXV goes bad it only allows minimal refrigerant flow, reducing the capacity of the system.
09-23-2013, 02:07 PM
#82
These are the exact readings and wordage that was on my ford service paperwork the first time i went for crappy a/c back in july.
Is the highside number low?
"23321 HOOK UP GAUGES- AT 1500RPM LOW SIDE 30PSI AND HIS SIDE AT 155PSI, RT 46DEGF AIR OUT CENTER VENT ON MAX AC- WINDOWS WERE ALSO FROSTING UP ON INSIDE"
Is the highside number low?
"23321 HOOK UP GAUGES- AT 1500RPM LOW SIDE 30PSI AND HIS SIDE AT 155PSI, RT 46DEGF AIR OUT CENTER VENT ON MAX AC- WINDOWS WERE ALSO FROSTING UP ON INSIDE"
Your tech had to be on drugs.
09-23-2013, 02:13 PM
#83
Member
09-23-2013, 02:15 PM
#84
Senior Member
Just a thought, and I may be missing where you have already done this, but you may want to try taking your truck to a different dealer that actually cares about its customers complains/requests before going through all this....
09-23-2013, 02:41 PM
#85
Member
He's been to 4 dealers I believe...
Last edited by rdkev; 09-23-2013 at 04:08 PM.
09-24-2013, 03:08 AM
#87
Senior Member
These are the exact readings and wordage that was on my ford service paperwork the first time i went for crappy a/c back in july.
Is the highside number low?
"23321 HOOK UP GAUGES- AT 1500RPM LOW SIDE 30PSI AND HIS SIDE AT 155PSI, RT 46DEGF AIR OUT CENTER VENT ON MAX AC- WINDOWS WERE ALSO FROSTING UP ON INSIDE"
Is the highside number low?
"23321 HOOK UP GAUGES- AT 1500RPM LOW SIDE 30PSI AND HIS SIDE AT 155PSI, RT 46DEGF AIR OUT CENTER VENT ON MAX AC- WINDOWS WERE ALSO FROSTING UP ON INSIDE"
I am just going to assume you're a woman, named St. Eve seems odd asking a man that!
The high side number could be low but it depends on the outdoor temp (it seems okay).
155 psi = ~114 deg F saturated which based on those numbers the outdoor temp should be ~94 deg at the time of the test.
If the outdoor temp was higher than that, say >99 deg F then there's a problem.
The low side is what I'd be concerned with as it is too low if the outdoor temp was 94 deg F.
30 psi = ~35 deg saturated. Don't have far to go to get to 32 deg F or below and start making ice. Once ice starts forming on the coil it blocks airflow and just in turn makes more ice and less airflow and lack of airflow means cooling will be **** poor and eventually be none.
The low side should be higher pressure than that. The only way to truly tell refrigerant charge and help diagnose this further would be superheat and subcool numbers or just liquid line and suction line temperatures and evaporator inlet (aka return air temp). A low low side could indicate a faulty TXV powerhead.
I wonder if they closed down a bunch of vents to just get the reading quicker and make it seem okay to the non-technical eye?
Last edited by gwpfan; 09-24-2013 at 03:16 AM.
09-24-2013, 03:28 PM
#88
I think we have somebody who knows what he's talking about here. That's the most thorough explanation of an A/C system I've heard in a long time.
That's funny windows frosting up on the inside, is your carpet wet?
I am just going to assume you're a woman, named St. Eve seems odd asking a man that!
The high side number could be low but it depends on the outdoor temp (it seems okay).
155 psi = ~114 deg F saturated which based on those numbers the outdoor temp should be ~94 deg at the time of the test.
If the outdoor temp was higher than that, say >99 deg F then there's a problem.
The low side is what I'd be concerned with as it is too low if the outdoor temp was 94 deg F.
30 psi = ~35 deg saturated. Don't have far to go to get to 32 deg F or below and start making ice. Once ice starts forming on the coil it blocks airflow and just in turn makes more ice and less airflow and lack of airflow means cooling will be **** poor and eventually be none.
The low side should be higher pressure than that. The only way to truly tell refrigerant charge and help diagnose this further would be superheat and subcool numbers or just liquid line and suction line temperatures and evaporator inlet (aka return air temp). A low low side could indicate a faulty TXV powerhead.
I wonder if they closed down a bunch of vents to just get the reading quicker and make it seem okay to the non-technical eye?
I am just going to assume you're a woman, named St. Eve seems odd asking a man that!
The high side number could be low but it depends on the outdoor temp (it seems okay).
155 psi = ~114 deg F saturated which based on those numbers the outdoor temp should be ~94 deg at the time of the test.
If the outdoor temp was higher than that, say >99 deg F then there's a problem.
The low side is what I'd be concerned with as it is too low if the outdoor temp was 94 deg F.
30 psi = ~35 deg saturated. Don't have far to go to get to 32 deg F or below and start making ice. Once ice starts forming on the coil it blocks airflow and just in turn makes more ice and less airflow and lack of airflow means cooling will be **** poor and eventually be none.
The low side should be higher pressure than that. The only way to truly tell refrigerant charge and help diagnose this further would be superheat and subcool numbers or just liquid line and suction line temperatures and evaporator inlet (aka return air temp). A low low side could indicate a faulty TXV powerhead.
I wonder if they closed down a bunch of vents to just get the reading quicker and make it seem okay to the non-technical eye?
10-04-2013, 09:37 PM
#90
Senior Member
Trade it in for one with ac seats, your bean bag will be so cold you'll be turning up the heat!