Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSOLDSMOBILE1998ACHIEVA 3.1 M, 4T40E/MN4REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1 (HVAC SYSTEM - GENERAL SERVICING)LEAK TESTINGDYE SOLUTION LEAK TESTING PROCEDURES
1998 Oldsmobile Achieva 3.1 M, 4T40E/MN4
Dye Solution Leak Testing Procedures
1998 Oldsmobile Achieva 3.1 M, 4T40E/MN4SECTION Dye Solution Leak Testing Procedures
WARNING: This page does not describe the selected car, but rather 110 other vehicles, including the 1999 Saturn SW2, 1999 Saturn SW1, 1999 Saturn SL2, 1999 Saturn SL1, and 1999 Saturn SL. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Dye-charged refrigerant cans are available to be used as internal leak detectors. The use of this type of solution may void some manufacturer's warranties. Be sure to check with the A/C system manufacturer concerning the use of dye-charged leak detectors. Dyes which work in R-12 systems will not work in R-134a systems.
The following procedure is for introducing a dye solution, not dye-charged refrigerant, into A/C system.
- Connect manifold gauge set to air conditioning system in a normal manner. Remove center hose from manifold gauge set, and replace it with a short piece (6" long) of 1/4" tubing using two 1/4" flare nuts. Connect a container of dye solution to the tubing.
- Connect one end of gauge set center hose to dye solution container. Connect a container of refrigerant to the other end of the hose. Operate engine at idle speed. Set the air conditioning system for maximum cooling. Slowly open the low-side hand valve to allow the dye solution to enter the system.
- Charge system to at least 50 percent capacity. Operate system for 15 minutes, and then shut off both the air conditioning system and the engine. Check all connections for signs of the colored dye solution. Check the vehicle again 24 hours later. If leaks are found, repair as necessary.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.