Frustrating AC problem on '88 Bonneville
#1
Senior Member
Posts like a Northstar
Thread Starter
Frustrating AC problem on '88 Bonneville
Replaced compressor 8 years ago and been blowing very cold, then back in March we discovered AC not blowing cold, so I utilized "sniffer" and discovered a leak in the line set.... replaced that, evacuated, refilled....blowing cold...... a week later, not longer blowing cold...... used sniffer again, discovered it hitting around orifice tube connection and discovered a crimped O-ring....replaced that, evacuated, and it held vacuum for 2 hours, so I refilled...... 5 days later, not blowing cold again..... so this time I put dye in system and allowed to circulate a few days..... BUT I can find no areas where dye is seeping out..... I am befuddled at where the leak is.... if it is leaking so badly that the compressor begins to quickly cycle after 5 days, it would appear I would see the dye at some point..... any ideas of places to check? I am almost at the point of breaking one of standard laws....and getting a can of AC Pro Super Seal, just to see if it works..... I am tired of this.
#2
Retired
Sounds like you actually have the proper tools yes?
Instead of putting a vacuum on the system, pressurize it to normal with nitrogen. Seals can hold fine when under a vacuum, but when under pressure, they behave differently. Nitrogen is much cheaper than R134 when it comes to testing. And because its inert, it won't contaminate the system.
Instead of putting a vacuum on the system, pressurize it to normal with nitrogen. Seals can hold fine when under a vacuum, but when under pressure, they behave differently. Nitrogen is much cheaper than R134 when it comes to testing. And because its inert, it won't contaminate the system.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#3
Senior Member
True Car Nut
thats what i use nitrogen and a soap bottle. some times you can listen for a leak and it will get you in the neighborhood. it might be in the evap, alot of times the condenser gets rocks in the front and develops holes
Thread
Thread Starter
Forum
Replies
Last Post