engine DODGE NEON 1999 Service Repair Manual

EMISSION CONTROL SYSTEMÐ1.8L ENGINE
CONTENTS
page page
GENERAL INFORMATION
EMISSION CONTROL SYSTEMÐ1.8L SOHC
ENGINE............................. 1
GENERAL INFORMATION
EMISSION CONTROL SYSTEMÐ1.8L SOHC
ENGINE
The emission control system used on the 1.8L
SOHC engine operates the same as the emission con-
trol system used on the 2.0L SOHC engine. It alsocontains the same components as the 2.0L engine,
and the service procedures are the same. Refer to
group 25 for the 2.0L engine in this manual for a
complete description of the fuel system and its ser-
vice procedures.
PLEMISSION CONTROL SYSTEMÐ1.8L ENGINE 25 - 1

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/PLATE
Depending on which plant the vehicle is manufac-
tured, it may be equipped with a Body Code Emboss
or a Body Code Plate.
VIN CODE DECODING
POSITION INTERPRETATION CODE = DESCRIPTION
1 Country of Origin1 = United states
3 = Mexico
2 MakeB = Dodge
P = Plymouth
3 Vehicle Type 3 = Passenger Car
4 Pass. Safety E = Active Restraints, Driver & Passenger Airbags
5 Car Line S = Neon/Neon Expresso
6 Series2 = Low Line
4 = High Line
6 = Sport
7 Body Style2 = 2 Door Pillared Hardtop
7 = 4 Door Pillared Hardtop
8 EngineC = 2.0L 4 Cyl. 16V
Y = 2.0L 4 Cyl. DOHC
9 Check Digit See explanation in this section.
10 Model Year W = 1998
11 Assembly PlantD = Belvidere
T = Toluca
12 Thru 17 Vehicle Build Sequence 6 digit number assigned by assembly plant.
Fig. 2 Vehicle Safety Certification Label
2 INTRODUCTIONPL
GENERAL INFORMATION (Continued)

BODY CODE EMBOSS
The Body Code Emboss is located in the engine
compartment on the front of the right strut tower.
There are two lines of information in the body code
emboss.
BODY CODE EMBOSS LINE 1
Line 1 contains the Vehicle Identification Number
(VIN). Refer to Vehicle Identification Number (VIN)
paragraph for proper breakdown of VIN code.
BODY CODE EMBOSS LINE 2
DIGITS 1-3ÐPaint Code
Refer to Group 23, Body for paint information.
DIGITS 4-7ÐTrim Code
Refer to Parts Catalog for more information.
DIGITS 5-10ÐOpen
DIGITS 11-14ÐVehicle Order Number
BODY CODE PLATE
LOCATION AND DECODING
The Body Code Plate is located in the engine com-
partment on the radiator closure panel. There are
seven lines of information on the body code plate.
Lines 4, 5, 6, and 7 are not used to define service
information. Information reads from left to right,
starting with line 3 in the center of the plate to line
1 at the bottom of the plate.
BODY CODE PLATE ± LINE 3
DIGITS 1, 2, AND 3
Paint procedure
DIGIT 4
Open Space
DIGITS 5 THROUGH 8
Primary paint
See Group 23, Body for color codes.
DIGIT 9
Open Space
DIGITS 10 THROUGH 13
Secondary Paint
DIGIT 14
Open Space
DIGITS 15 THROUGH 18
Interior Trim Code
DIGIT 19
Open SpaceDIGITS 20, 21, AND 22
Engine Code
²ECB = 2.0L Four Cylinder SOHC Gasoline
²ECC = 2.0L Four Cylinder DOHC Gasoline
BODY CODE PLATE LINE 2
DIGITS 1 THROUGH 12
Vehicle Order Number
DIGITS 13, THROUGH 15
Vinyl Roof Code
DIGITS 16 AND 17
Open space
DIGITS 18 AND 19
Vehicle Shell Line
²PL
DIGITS 20
Carline
²C = Chrysler
²D = Dodge
²H = Plymouth
DIGIT 21
Price Class
²E = Economy
²H = High Line
²L = Low Line
²M = Mid Line
²P = Premium
²S = Special/Sport
²X = Performance Image
DIGITS 20 AND 21
Body Type
²22 = Two Door Sedan
²42 = Four Door Sedan
BODY CODE PLATE LINE 1
DIGITS 1, 2, AND 3
Transaxle Codes
²DGA = 31TH 3-Speed Automatic Transaxle
²DD4 = NV T350 5-Speed Manual Transaxle
²DD5 = NV T350 5-Speed Manual Transaxle
DIGIT 4
Open Space
PLINTRODUCTION 3
GENERAL INFORMATION (Continued)

VIN DECODING INFORMATION
POSITION INTERPRETATION CODE = DESCRIPTION
1 Country of origin 1 = United States
3 = Mexico
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
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 X = 1999
11 Assembly Plant D = Belvedere Assembly
T = Toluca
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
MANUFACTURER PLATE
The Manufacturer Plate (Fig. 4) is located in the
engine compartment on the right side of the radiator
closure panel crossmember adjacent. The plate con-
tains five lines of information:
1. Vehicle Identification Number (VIN)
2. Gross Vehicle Mass (GVM)
3. Gross Train Mass (GTM)
4. Gross Front Axle Rating (GFAR)
5. Gross Rear Axle Rating (GRAR)
Fig. 3 E-Mark Label
Fig. 4 Manufacturer Plate
0 - 2 INTRODUCTIONPL
GENERAL INFORMATION (Continued)

GROUP TAB LOCATOR
INIntroduction
INaIntroduction
0Lubrication and Maintenance
2Suspension
3Differential and Driveline
5Brakes
6Clutch
6aClutch
7Cooling
8ABattery
8BStarting
8CCharging System
8CaCharging System
8DIgnition System
8EInstrument Panel and Systems
8EaInstrument Panel and Systems
8FAudio System
8GHorns
8HVehicle Speed Control System
8HaVehicle Speed Control System
8JTurn Signal and Flashers
8KWindshield Wipers and Washers
8KaWindshield Wipers and Washers
8LLamps
8LaLamps
8MRestraint System
8NElectrically Heated Systems
8NaElectrically Heated Systems
8PPower Door Locks
8QaImmobilizer System
8SPower Windows
8TPower Mirrors
8TaPower Mirrors
8UChime Warning/Reminder System
8WWiring Diagrams - LHD and RHD
9Engine
9aEngine
11Exhaust System and Intake Manifold
11aExhaust System and Intake Manifold
13Frame and Bumpers
13aFrame and Bumpers
14Fuel System
14aFuel System - 1.8L Engine
19Steering
19aSteering
21Transaxle
21aTransaxle
22Tires and Wheels
23Body
24Heating and Air Conditioning
25Emission Control Systems
25aEmission Control System - 1.8L Engine