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REPAIR MANUAL, SERVICE MANUAL, SHOP MANUAL, REPAIR INSTRUCTIONS, 1998 Buick Park Avenue 3.8 ENGINE, 3.8 LITER, 3.8, ENGINE, 1998 Buick Park Avenue 3.8, ENGINE, 1998 Buick Park Avenue 3.8 ENGINE, REPAIR MANUAL, SHOP MANUAL, SERVICE MANUAL, TECH MANUAL, MAINTENANCE MANUAL, ONLINE MANUAL FOR DOWNLOAD, G.M. TECHNICIAN SERVICE MANUAL, MANUAL DOWNLOAD NOW ONLINE AT OUR WEBSITE. AT THESE PRICES IT IS ALMOST FREE! WE ARE THE CHEAPEST MANUAL ON THE INTERNET FOR THE 3.8 LITER PARK AVENUE ENGINE 1998, AND 1999 MAUAL IS THE SAME FOR BOTH YEARS. HOW TO REMOVE AND SERVICE ENGINE, INSTRUCTIONS, COVERS EVERYTHING FROM HEAD BOLTS TO OIL PAN, INTAKE MANAFOLDS AND COOLING SYSTEMS, REPAIRS, AND SERVICE INSTRUCTIONS. Download this enging manual for almost free now online. Installation instructions, repair, instructions, do it yourself instructions, how to, instructions, troubleshoot, troubleshooting, service, overhaul, gm manual, buick manual, shop manual, service manual, rebuild manual, removal instructions, 1998 Buick Park Avenue 1998-99 ENGINES 3.8L V6 1998-99 ENGINES 3.8l V6 MODEL IDENTIFICATION MODEL IDENTIFICATION – CARS Body Code (1) Model “C” Park Avenue
“F” Camaro & Firebird “G” Riviera “H” Bonneville, Eighty Eight, LeSabre, LSS & Regency “W” Grand Prix, Intrigue, Lumina, Monte Carlo & Regal (1) Vehicle body code is fourth character of Vehicle Identification Number (VIN). ENGINE IDENTIFICATION Engine can be identified by eighth character of Vehicle Identification Number (VIN) which is stamped on a metal pad located near lower left comer of windshield. See ENGINE IDENTIFICATION CODES table. “W” in the tenth character of the VIN indicates 1998 model year, and “X” indicates 1999 model year. Engine can also be identified by a 3-character engine code (RPO code). See ENGINE IDENTIFICATION CODES table. This code may be stamped on engine. See Fig. 1 . Here are some topics covered, manual includes more information and instructions that wha ti am listing FUEL PRESSURE RELEASE
Disconnect negative battery cable. Loosen fuel tank filler cap. Connect Fuel Pressure Gauge (1-34730-1) to fuel line fitting (wrap shop towel around fitting to absorb leakage). Place gauge bleed hose into container. Open bleed valve to release pressure. COOLING SYSTEM BLEEDING Except “W” Body
1. Fill radiator to base of filler neck. Start engine. Place AlC-heater control in any position except MAX. Select highest temperature setting. Idle engine until lower radiator hose is
hot. 2. Increase engine speed to 3000 RPM and then back to idle. Do this 5 times to expel any air trapped in system. Fill radiator as necessary. Install radiator cap. Allow engine to
cool. Fill coolant recovery reservoir as necessary Removal & Installation (“F” Body) 1. Disconnect negative and positive battery cables. Discharge AlC system using approved 1998 Buick Park Avenue 1998-99 ENGINES 3.8L V6 refrigerant recovery/recycling equipment. Relieve fuel pressure. See FUEL
PRESSURE RELEASE . Disconnect AlC compressor and condenser hose from accumulator. Plug openings. Raise and support vehicle. Remove front tires. Drain coolant and engine oil.
2. Remove heated oxygen sensors. Remove catalytic converter bolts. Remove exhaust pipe clamp bolt at catalytic converter and remove catalytic converter. Remove front fascia lower deflectors and stabilizer bar bushing bolts. Remove radiator inlet hose. 3. On AlT models, remove torque converter bolts. Disconnect transmission fluid oil cooler lines. Disconnect transmission range selector lever cable from transmission.
Remove left and right transmission support brackets.
4. On MIT models, disconnect transmission control lever handle. Remove clutch actuator cylinder line from actuator. On all models, remove driveshaft. Remove torque arm from
transmission. 5. Remove steering gear coupling shaft from rack and pinion. Remove ground strap. Remove starter. Disconnect AlC compressor and condenser hose from compressor and
condenser. Remove negative battery cable from rear compressor bracket mounting stud. 6. Lower vehicle. Remove heater hoses from drive belt tensioner. Remove air cleaner. Disconnect fuel lines at fuel rail. disconnect cruise control cable from throttle body. Disconnect accelerator control cable from throttle body. Remove radiator outlet hose
from thermostat housing. WARNING: To avoid personal injury, gear tension relief function of scan tool must be performed prior to disconnecting ABS hydraulic modulator. See appropriate ANTI-LOCK article in BRAKES. 7. Disconnect brake booster vacuum hose. Using scan tool, perform gear tension relief sequence. See appropriate ANTI-LOCK article in BRAKES. Disconnect BRAKELINES and clips from ABS hydraulic modulator. Remove right-hand body hinge pillar trim panel. Disconnect engine wiring harness connectors. Disconnect forward lamp wiring harness connectors. 8. Disconnect Powertrain Control Module (PCM) and harness, and place on top of engine. Pull engine wiring harness through front dash. Place harness on top of engine. Disconnect positive lead at generator. Remove lower shock attachment nuts and bolts from lower control arms. Remove upper control arm ball stud from steering knuckle.
Use upper control arm to secure struts. 9. Disconnect electrical connectors to wheel speed sensors at engine frame. Position engine support under engine frame. Remove engine frame and transmission support bolts. Lower engine, transmission and engine frame. Remove transmission. On MIT
models, remove clutch housing and clutch. On all models, remove engine mount through-bolts. Remove engine from engine frame. 1998 Buick Park Avenue 1998-99 ENGINES 3.8L V6
10. To install, reverse removal procedure. Fill and bleed cooling system. See COOLING SYSTEM BLEEDING. Tighten bolts to specification. See TORQUE SPECIFICATIONS table. Removal & Installation (“W” Body) 1. Remove hood. Disconnect negative battery cable. Release fuel pressure. See FUEL
PRESSURE RELEASE . Remove air cleaner. Disconnect fuel lines from fuel rail. Remove coolant recovery bottle, inner fender electrical cover, and fuel injector cover. Disconnect throttle cables. 2. Remove heat shield from exhaust crossover pipe. Remove throttle cable bracket and vacuum line as an assembly. Remove exhaust crossover pipe. Remove engine torque strut from between engine and top of radiator panel. Drain cooling Disconnect oil cooler hoses from radiator. 3. Remove serpentine belt. Remove power steering pump. Where necessary to gain clearance, remove washer reservoir, diagonal braces, cooling fans, generator and generator support bracket with ignition coil pack. Raise and support vehicle. Remove flexplate cover. Mark flexplate in relation to torque converter for reassembly reference.
Remove torque converter bolts. Remove Ale compressor (leave hoses attached). Remove starter. 4. Remove bolts securing transaxle mount to engine. Remove nuts securing engine mount
to frame. Disconnect oil cooler pipes. Disconnect exhaust pipe from manifold. Lower vehicle. Remove bolts securing transaxle to engine. Separate transaxle from engine. Lift engine out of vehicle. 5. To install, reverse removal procedure. Fill and bleed cooling system. See COOLING SYSTEM BLEEDING. Fill and bleed power steering system. See POWER STEERING BLEEDING. Tighten bolts to specification. See TORQUE SPECIFICATIONS table. INTAKE MANIFOLD (UPPER) NOTE: On supercharged engine VIN 1), supercharger acts as an upper intake manifold. See SUPERCHARGER. Removal (All Except “F” Body) 1. Release fuel pressure. See FUEL PRESSURE RELEASE. Disconnect negative
battery cable. Drain cooling system. Remove throttle body air intake duct. 2. Remove fuel injector sight shield. Disconnect right bank spark plug wires and set aside. Disconnect evaporative emissions canister purge solenoid valve harness connector. Remove fuel rail. Disconnect brake booster vacuum hose. Remove EGR heat shield. 3. Remove throttle cable bracket as necessary and set aside. Remove throttle body support
bracket. Disconnect MAP sensor harness connector. Remove upper intake manifold 1998 Buick Park Avenue 1998-99 ENGINES 3.8L V6 bolts, upper intake manifold and gasket. Removal (“F” Body)
1. Release fuel pressure. See FUEL PRESSURE RELEASE. Disconnect negative battery cable. Drain cooling system. Disconnect the Intake Air Temperature (lAT) sensor harness connector. Remove throttle body air intake duct. 2. Remove serpentine belt. Disconnect wiring at generator. Disconnect and remove evaporative canister purge solenoid. Remove generator bolts and generator. CAUTION: The drive belt tensioner must be rotated, if it is difficult to remove. Pulling the tensioner from top may damage the engine front cover. If necessary, break the plastic thermostat bypass upper pipe to allow rotation of the drive belt tensioner and replace the pipe during installation. 3. Remove heater hoses from drive belt tensioner. Remove drive belt tensioner bolts.
Remove drive belt tensioner. Disconnect vacuum hoses and electrical connectors as necessary. Remove evaporative emissions canister purge solenoid valve. Remove
intake manifold vacuum source fitting from upper intake manifold, just above fuel rail. 4. Remove Idle Air Control (lAC) valve. Disconnect fuel feed and return pipes from fuel
rail. Disconnect EVAP pipe at engine. Disconnect cruise control and accelerator cables from throttle body. Remove cruise control and accelerator cables from throttle body
cable bracket as necessary. Remove throttle body cable bracket bolts and throttle body cable bracket. 5. Disconnect ignition control module harness connector. Reference mark spark plug
wires at ignition coils. Disconnect spark plug wires at ignition coils and set aside. Remove ignition control module/coil assembly mounting bolts/nuts. Remove ignition
control module/coil assembly. 6. Remove generator brace-to-Iower intake manifold bolts. Remove generator brace from
lower intake manifold. Remove throttle body-to-upper intake manifold bolts. Remove throttle body from upper intake manifold. 7. Remove EGR valve outlet pipe retaining bolt and nut. Remove EGR valve outlet pipe. Disconnect upper radiator hose at thermostat housing. Remove thermostat housing
bolts, thermostat housing and thermostat. 8. Disconnect fuel injector harness connectors. Using compressed air, clean dirt from injector bores, near bottom of injectors. Remove fuel rail retaining nuts. Remove fuel rail and set aside. Remove upper intake manifold bolts, upper intake manifold and
gasket. Installation

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