1986 grand national

1986grandNash

Member

Joined

Sep 13, 2021

• Apr 22, 2024

• #1

Well I just got my ac working in my car and when I was driving around I seen the temperature on scanmaster reach 230 degrees. Is the car overheating? I heard the fan running. Also when I vacuum the system down and charged it the high side stayed at 0 and low side 40psi. Is there something wrong? I feel like it’s not cold enough and it takes really long to start cooling.

 

G

gnmaster2004

Active Member

Joined

Mar 4, 2004

• Apr 22, 2024

• #2

Check the coolant level. High side has a bad connection to the a/c gauge

 

John Larkin

Sublime Master of Turbology

Joined

May 25, 2001

• Apr 22, 2024

• #3

When the condensor is shedding heat, it is adding to the heat of the radiator. On the highway not so noticable, in town, very noticable. Just make sure the thermostat is cycling and the temp is rising and falling.

 

1986grandNash

Member

Joined

Sep 13, 2021

• Apr 22, 2024

• #4

I notice as im driving the temps go down. But when I’m sitting at a light they rise up.

 

1986grandNash

Member

Joined

Sep 13, 2021

• Apr 23, 2024

• #5

gnmaster2004 said:

Check the coolant level. High side has a bad connection to the a/c gauge

Click to expand...

I checked the high side connections it was good

 

TexasT

Texas, Where are you from

Joined

Sep 10, 2002

• Apr 23, 2024

• #6

1986grandNash said:

I notice as im driving the temps go down. But when I’m sitting at a light they rise up.

Click to expand...

if you aren't moving the only thing moving air through the rad is the wind and that fan. if you are still spotting a stock fan setup you might check it out to make sure it gets to running on high speed and is moving air through that radiator.

 

1986grandNash

Member

Joined

Sep 13, 2021

• Wednesday at 1:26 AM

• #7

I added daul electric fans and a 160 thermostat. Now my temps aren’t going past 168 degrees

 

1986grandNash

Member

Joined

Sep 13, 2021

• Wednesday at 1:29 AM

• #8

Does anyone know why when I charge my ac the low pressure side goes up, but the high side stays at 0. Why is that?

 

Chuck Leeper

Toxic old bastard

Staff member

Joined

May 28, 2001

• Wednesday at 7:52 AM

• #9

1986grandNash said:

Does anyone know why when I charge my ac the low pressure side goes up, but the high side stays at 0. Why is that?

Click to expand...

Duck Duck Go is your friend.

Ac low side psi is ok. High side is zero at DuckDuckGo

DuckDuckGo. Privacy, Simplified.

duckduckgo.com