Ford Mustang (1999-2004) Service Manual: Air Conditioning Line (Peanut) Fitting
Disconnect
1. CAUTION: Support the female fitting with a wrench to prevent the tubes from twisting.
Remove the nut from the peanut fitting.

2. Pull the peanut fitting apart.

3. CAUTION: Do not use metal tools to remove the O-ring seal. They can cause axial scratches across the O-ring seal groove, resulting in refrigerant leaks.
Remove the O-ring seal with a non-metallic tool.

Connect
1. Clean all dirt or foreign material from the fittings.
2. CAUTION: Use only the new O-ring seals. The use of any O-ring seals other than those specified in the Ford Master Parts Catalog may result in intermittent leakage during vehicle operation.
Install the O-ring seal.
- Lubricate the O-ring seal with PAG Refrigerant Compressor Oil (R-134a Systems) F7AZ- 19589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231- B.

3. Lubricate the inside of the fittings with PAG Refrigerant Compressor Oil (R-134a Systems) F7AZ-19589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231- B.
4. NOTE: When correctly assembled, the male and female fittings should be flush.
Assemble the male and female fittings together.

Heater Hose Coupling
Special Tool(s)
Remover, Heater Hose Inlet
Tube
412-042 (T85T-18539-AH)
Disconnect Tool, Heater Hose
412-127
Material
Item
Specification
MERPOL
-
ESE-M ...
Refrigerant System Tests
Special Tool(s)
R-134a Manifold Gauge Set
176-R032A or equivalent
1. Connect the R-134a Manifold Gauge Set. For additional information, refer
to Manifold Gauge
Set Connection in this ...
Other materials:
Principles of Operation
Power Window Control
NOTE: Battery power and ground must be removed before disconnecting the
GEM connectors to
avoid setting false DTCs.
The driver power window one-touch down operation is controlled by the
generic electronic module
(GEM). This featur ...
Installation
NOTE: Do not use a fiber disc to clean the surfaces. Fibers from
the disc can get into the oil pan and
oil and clog the oil bypass valve.
1. Clean and inspect the cylinder head for flatness.
2. Install a new head gasket on the cylinder block with the sm ...
Symptom Chart
Condition
Possible Sources
Action
Difficult
starting
Damaged ignition
system.
Damaged fuel
system.
Damaged starting
system.
Damaged charging
system/battery.
Burnt valve.
Worn piston.
Worn pi ...
