dbd
Registered User
1990 SC – Stock –
A/C seized, was working in morning – afternoon oops.
Did a search and found some information, but haven’t found answers about using parts for the 94 on the 90.
I am going to change all of the components and go with 134a, but have a couple questions.
Looking for input from people who have changed to 134a and have info on things that does or doesn’t work.
Probably the biggest question is about a condenser and hoses.
I see that the 94 came with 134a. Everything I install will be new. (no rebuilds)
I have checked parts and found that some of the stuff is the same between the two years.
Should I use the parts from 94 that are different? These include the following parts.
Accumulator
Evaporator core (may not fit due to the years)
Condenser (94 uses a fan – may or may not be a problem)
Pressure switch
Discharge/Suction hose combination – Have found the combo set for the 90 but not for the 94.
They both use the same part # for the liquid line with orifice. So I don’t see why I can’t use the discharge/suction combo for the 90. Still researching this.
Parts I found the same between the 90 & 94
Compressor, Inline filters, O-ring and gasket kit, Liquid line with orifice
I realize the change in test hose connectors and will do what is needed with the correct adaptors.
But can I use the same gauge set that I have used for the R12 – Not familiar with the pressure settings for 134a yet. Don’t think there is anything special about the gauges as long as the range on the dial is high enough.
Hopefully I will be able to get close to the quality of cooling in my Mark & F150 if I change enough parts.
Thanks in advance for any input
dbd
A/C seized, was working in morning – afternoon oops.
Did a search and found some information, but haven’t found answers about using parts for the 94 on the 90.
I am going to change all of the components and go with 134a, but have a couple questions.
Looking for input from people who have changed to 134a and have info on things that does or doesn’t work.
Probably the biggest question is about a condenser and hoses.
I see that the 94 came with 134a. Everything I install will be new. (no rebuilds)
I have checked parts and found that some of the stuff is the same between the two years.
Should I use the parts from 94 that are different? These include the following parts.
Accumulator
Evaporator core (may not fit due to the years)
Condenser (94 uses a fan – may or may not be a problem)
Pressure switch
Discharge/Suction hose combination – Have found the combo set for the 90 but not for the 94.
They both use the same part # for the liquid line with orifice. So I don’t see why I can’t use the discharge/suction combo for the 90. Still researching this.
Parts I found the same between the 90 & 94
Compressor, Inline filters, O-ring and gasket kit, Liquid line with orifice
I realize the change in test hose connectors and will do what is needed with the correct adaptors.
But can I use the same gauge set that I have used for the R12 – Not familiar with the pressure settings for 134a yet. Don’t think there is anything special about the gauges as long as the range on the dial is high enough.
Hopefully I will be able to get close to the quality of cooling in my Mark & F150 if I change enough parts.
Thanks in advance for any input
dbd