2000 DODGE NEON check engine

REMOVAL
(1) Remove the wire connector from the low pres-
sure cut-off switch.
(2) Remove the center bolt of refrigerant line
plumbing sealing plate (Fig. 37).
(3) Carefully pull the refrigerant line-sealing plate
assembly from the expansion valve towards front of
vehicle. Do not scratch the expansion valve sealing
surfaces with pilot tubes.
(4) Cover the openings on A/C line-sealing plate
assembly to prevent contamination.
(5) Remove two screws securing the expansion
valve to the evaporator sealing plate.
(6) Carefully remove valve.
INSTALLATION
(1) Remove and replace the aluminum gasket on
the evaporator sealing plate.
(2) Carefully hold the expansion valve to the evap-
orator sealing plate so not to scratch the sealing sur-
face. Install two screws and tighten to 1163 N´m
(100630 in. lbs.).
(3) Remove and replace the aluminum gasket on
the refrigerant line- sealing plate assembly.
(4) Carefully hold the refrigerant line-sealing plate
assembly to the expansion valve. Install bolt and
tighten to 2363 N´m (200630 in. lbs.).
(5) Connect wires to low pressure cut-off switch.
(6) Evacuate and recharge system.
(7) After expansion valve is installed, system is
charged, and leaks have been checked, repeat A/C
performance check.
HEATER CORE
Refer to HVAC Housing Disassembly and Assembly
in this section for heater core removal procedure.
HEATER HOSES
CAUTION: When removing hoses from heater core
inlet or outlet nipples DO NOT exert excess pres-
sure. The heater core may become damaged and
leak engine coolant.
NOTE: Review Cooling System Precautions before
proceeding with this operation.
REMOVAL
(1) Drain engine cooling system. Refer to Group 7,
Cooling System.
(2) Using spring tension clamp pliers, remove
clamps at end of heater hose to be removed (Fig. 38).
(3) Carefully rotate hose back and forth while pull-
ing away from connector nipple.INSTALLATION
For installation, reverse the above procedures.
Fig. 37 Expansion Valve - Typical
1 ± ALUMINUM N-GASKET
2 ± PLUMBING SEALING PLATE
3 ± LOW/DIFFERENTIAL PRESSURE CUT-OFF SWITCH
4 ± DASH PANEL
5 ± H-VALVE
6 ± EVAPORATOR SEALING PLATE
7 ± H-VALVE
Fig. 38 Heater Hoses and Clamps
1 ± COWL PANEL
2 ± HEATER HOSE AND CLAMPS
3 ± HEATER CORE TUBES
4 ± HEATER HOSE SUPPLY AND RETURN TUBES
24 - 28 HEATING AND AIR CONDITIONINGPL
REMOVAL AND INSTALLATION (Continued)

(6) Remove expansion valve from evaporator, and
cap fittings.
(7) Remove rubber drain tube extension from con-
densation drain tube.
(8) Disconnect the vacuum harness at the power
brake booster (Fig. 48).
(9) Unsnap and remove the defroster duct (Fig.
49).(10) Remove three retaining nuts located in the
engine compartment, on the dash panel (Fig. 50).
(11) Remove the right side retaining screw (Fig.
51).
(12) Remove remaining nut located on dash panel
stud.
(13) Disconnect the wiring connectors.
(14) Remove assembly from the vehicle.
Fig. 48 HVAC Vacuum Harness
1 ± BRAKE POWER BOOSTER
2 ± A/C VACUUM CHECK VALVE
3 ± VACUUM HARNESS
Fig. 49 HVAC Housing Defroster Duct
1 ± DEFROSTER DUCT
2 ± BODY
3 ± ELECTRICAL CONNECTOR
4 ± HVAC HOUSING
Fig. 50 Dash Panel Retaining Studs
1 ± BLOWER RESISTOR
2 ± EXPANSION VALVE
3 ± DRAIN TUBE
4 ± DASH PANEL
5 ± HEATER HOSES
6 ± RETAINING STUDS
Fig. 51 Housing Screws
1 ± RIGHT SIDE RETAINING SCREW
2 ± EVAPORATOR PROBE GROMMET
3 ± SCREW BOSSES
4 ± DASH PANEL STUD AND NUT
PLHEATING AND AIR CONDITIONING 24 - 33
REMOVAL AND INSTALLATION (Continued)

VIN CODE DECODING
POSITION INTERPRETATION CODE = DESCRIPTION
1 Country of Origin 1 = United states
2 MakeB = Dodge
P = Plymouth
3 Vehicle Type 3 = Passenger Car
4 Pass. Safety E = Restraint System, Active Driver & Passenger Airbags
5 Car Line S = Neon
6 Series2 = Low Line
4 = High Line
7 Body Style6 = 4 Door Sedan
8 Engine C = 2.0 L 4 Cyl. 16V
9 Check Digit See explanation in this section.
10 Model Year Y = 2000
11 Assembly Plant D = Belvidere
12 Thru 17 Vehicle Build Sequence 6 digit number assigned by assembly plant.
VEHICLE SAFETY CERTIFICATION LABEL
A vehicle safety certification label (Fig. 2) is
attached to the rear facing of the driver's door. This
label indicates date of manufacture (month and
year), Gross Vehicle Weight Rating (GVWR), Gross
Axle Weight Rating (GAWR) front, Gross Axle Weight
Rating (GAWR) rear and the Vehicle Identification
Number (VIN). The Month, Day and Hour of manu-
facture is also included.
All communications or inquiries regarding the
vehicle should include the Month-Day-Hour and
Vehicle Identification Number.
BODY CODE EMBOSS
The vehicle is equipped with a Body Code Emboss
and it is located on the rear shelf. The emboss is
located in the trunk area on the forward top edge of
the rear shelf panel.
SERVICE PROCEDURES
THREADED HOLE REPAIR
Most stripped threaded holes can be repaired using
a Helicoilt. Follow the manufacture recommendation
for application and repair procedures.
SPECIFICATIONS
INTERNATIONAL VEHICLE CONTROL AND
DISPLAY SYMBOLS
The graphic symbols illustrated in the following
International Control and Display Symbols chart are
used to identify various instrument controls. The
symbols correspond to the controls and displays that
are located on the instrument panel.
Fig. 2 Vehicle Safety Certification Label
2 INTRODUCTIONPL
DESCRIPTION AND OPERATION (Continued)

VIN DECODING INFORMATION
POSITION INTERPRETATION CODE = DESCRIPTION
1 Country of origin 1 = United States
2 Make C = Chrysler
3 Vehicle Type 3 = Passenger Car
4 Passenger Safety E = Active Restraints, Driver and Passenger Airbags
5 Car Line S = Neon BUX L. H. D.
V = Neon BUX R. H. D.
6 Series M = DD5 5-Speed Manual Transmission
A = 3-Speed Automatic Transmission
7 Body Style7 = 4 Door Pillared Hardtop
8 Engine C = 2.0L 4 Cyl. 16V SOHC
A = 1.8L 4 Cyl. 16V SOHC
9 Check Digit See explanation in this section.
10 Model Year Y = 2000
11 Assembly Plant D = Belvedere Assembly
12 Thru 17 Build Sequence 6 Digit number assigned by assembly plant
E-MARK LABEL
An E-mark Label (Fig. 3) is located on the rear
shut face of the driver's door. The label contains the
following information:
²Date of Manufacture
²Month-Day-Hour (MDH)
²Vehicle Identification Number (VIN)
²Country Codes
²Regulation Number
²Regulation Amendment Number
²Approval Number
Fig. 3 E-Mark Label
1 ± Country Code
2 ± Regulation Number
3 ± Approval Number
4 ± Amendment Number
2 INTRODUCTIONPL
GENERAL INFORMATION (Continued)