1994–1997 Acura Integra Repair Manual (P/N 311-XXXXXX)

• Covers 1994 Acura Integra U.S. and Canada specifications for the 3-door hatchback and 4-door sedan in RS, LS, and GS-R series. VIN coding identifies DB7/DB8/DC2/DC4 body-engine combinations and model-year code R for 1994.
• Honda Motor Co., Ltd., Service Publication Office — First Edition 7/93. The publication itself states 1,448 pages and is organized into 23 thumb-tabbed sections.
• Covers the B18B1 1.8L DOHC and B18C1 1.8L DOHC VTEC engines, plus the Y80 5-speed manual and MP7A 4-speed automatic transmission.
• The PDF includes factory disassembly/assembly, inspection, testing/troubleshooting, repair, and adjustment procedures, supported by exploded-view indexes, torque and thread-size data, special-tool references, wiring and circuit diagrams, and diagnostic flowcharts.

Manual Organization and Repair Coverage

The 23-section layout moves from vehicle identification, special tools, specifications, and scheduled maintenance into the major mechanical and electrical systems. Engine coverage includes removal and installation, separate B18B1 and B18C1 cylinder-head/valve-train procedures, timing-belt service, valve seals, valve guides and seats, camshafts, rocker arms, engine-block inspection, pistons, crankshaft and bearing selection, lubrication, cooling, and intake/exhaust components.

Fuel and emissions work is handled through the PGM-FI section rather than a short tune-up chapter. It covers self-diagnostics, ECM troubleshooting, fuel-pressure testing, injectors and fuel pump, MAP, ECT, TPS, IAT, TDC/CKP/CYP and vehicle-speed inputs, the B18C1 knock sensor, idle-control circuits, and emission-control hardware. The B18C1 material also includes VTEC-related inspection and troubleshooting.

Drivetrain coverage runs from clutch hydraulics, clutch disc, pressure plate, flywheel, and release bearing into the Y80 manual transmission, including housing disassembly, shafts, gears, synchros, bearing work, and thrust-shim adjustment. The MP7A automatic section goes much deeper than fluid service: hydraulic flow, lock-up operation, TCM inputs, solenoid diagnosis, stall-speed and pressure testing, valve-body repair, clutch packs, oil pump, shafts, bearings, torque converter, cooler flushing, and shift-cable adjustment are all covered. Separate sections address manual- and automatic-transmission differentials and driveshafts.

Chassis and body sections cover power rack-and-pinion steering, steering pump testing and overhaul, suspension, wheel bearings, alignment, four-wheel disc brakes with ABS, body panels and interior trim, heater, HFC-134a air conditioning, and electrical systems including SRS.

Technical Specification Preview

Specifications are separated by engine and system where the hardware differs. B18B1 nominal compression is 1,370 kPa (199 psi), while B18C1 nominal compression is 1,860 kPa (270 psi); both list a 930 kPa (140 psi) minimum. B18B1 intake valve stem-to-guide clearance is 0.02–0.05 mm, compared with 0.025–0.055 mm for the B18C1. Final cylinder-head bolt torque is 83 N·m (61 lbf-ft) on the B18B1 and 81 N·m (60 lbf-ft) on the B18C1.

Fuel-pressure specifications with the regulator vacuum hose disconnected are 275–324 kPa for the B18B1 and 329–378 kPa for the B18C1. The MP7A section specifies 830–880 kPa (120–130 psi) line pressure at 2,000 rpm and a 2,200–2,600 rpm stall-speed range. Manual-transmission oil-change capacity is 2.2 L (2.3 US qt); automatic-transmission capacity is 5.9 L (6.2 US qt) for overhaul. Power-steering pump pressure is specified at 6,400–7,400 kPa with the shut-off valve closed. Air-conditioning data identifies HFC-134a refrigerant and ND-OIL8 refrigerant oil, P/N 38899-PR7-A01.

Diagnostics, Schematics, and Factory Procedures

Representative diagram and chart coverage includes the VTEC Pressure Switch Troubleshooting Flowchart, Automatic Transmission Hydraulic Flow, A/T Circuit Diagram, heater Circuit Diagram, A/C Circuit Diagram, and SRS Circuit Diagram. Section 23 also provides connector identification, wire-harness routing, relay/control-unit locations, schematic symbols, power distribution, ground distribution, starting/charging, lighting, gauges, interlock, power windows/locks, cruise control, and SRS diagnosis.

Factory procedures include work that commonly requires dedicated shop equipment: engine removal/installation, timing-belt replacement and tension adjustment, valve-guide and valve-seat repair, engine-block measurement and bearing selection, clutch and transmission overhaul, MP7A hydraulic pressure diagnosis and clutch/valve-body repair, differential backlash and bearing setup, driveshaft joint/boot service, steering gearbox and pump repair, ABS diagnosis, and A/C recovery, evacuation, leak testing, and charging.

Special-tool tables identify the 07PAZ-0010100 SCS Short Connector, 07406-0040001 Fuel Pressure Gauge, 07406-0020003 A/T Oil Pressure Gauge Set, 07JGG-001010A Belt Tension Gauge, and 07HAZ-SG00400 SRS Deployment Tool, along with transmission, steering, suspension, and engine service fixtures.

The manual also flags several easy-to-miss repair hazards. Cylinder-head removal is held until coolant temperature drops below 100°F (38°C) to avoid cylinder-head damage. Driveshaft removal must be kept straight to avoid damaging the differential oil seal or intermediate-shaft dust seal. During MP7A bearing work, improper main ball-bearing replacement can damage the torque-converter housing and oil pump; the manual warns that an unnoticed oil-pump problem can lead to seizure.

SRS, pressurized fuel and transmission circuits, and refrigerant service require the specified precautions and equipment. The SRS section carries Honda's instruction that SRS service be performed by an authorized Acura dealer.