Alfa Romeo1994–1997Technical specifications

146 1.6: Technical specifications

Workshop data for the 1.6-litre petrol (engine code 332.01). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Common faults & fixes

Summary

Match the engine code (332.01) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Alfa Romeo
Model: 146
Years: 1994–1997
Fuel: Petrol
Engine code: 332.01

Performance & efficiency

Power: 76 kW (103 hp)
Engine size: 1,596 cc
Cylinders: 4 · OHC
Compression ratio: 9.5:1
Fuel system: GM

Fluids & capacities

Engine oil (with the filter): 4.0 litres

All 121 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/OHC
Capacity (Fiscal) cc	1596
Compression ratio :1	9,5
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
Ignition system Make	GM
Ignition system Type	Multec
Ignition system Description	Map-DIS
Trigger location	Crankshaft
Fuel system Make	GM
Fuel system Type	Multec
Fuel system Description	MFI-i
Air metering Type	MAP
Combined ignition and fuel ECM	Yes
Diagnostic socket	Yes

Ignition system

Ignition coil supply voltage + with ballast V	12,0
Primary resistance Ohm	0,50
Secondary resistance Ohm	13300

Firing order

The firing order for the Alfa Romeo 146 1.6 (1994–1997) is 1-3-2-4.

Firing order	1-3-2-4

Valve clearances

Valve clearances on the Alfa Romeo 146 1.6 (1994–1997) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mm	Hydraulic
Valve clearance - EXHAUST mm	Hydraulic

Engine oil & fluids

Engine oil

The Alfa Romeo 146 1.6 (1994–1997) takes 4.0 litres of engine oil with the filter.

See the reference table for the complete engine oil entries and their conditions.

Manual gearbox

The manual gearbox has a listed capacity of 2.4 litres. The specified oil is SAE 80W-90, with classification GL-5.

Coolant

The listed total cooling-system capacity is 6.7 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	All temperatures
Engine oil grade SAE	5W-30 Synthetic
Engine oil classification API/ACEA	SJ/A1
Ambient temperature range	-20°C➞
Engine oil grade SAE	10W-40 Synthetic
Engine oil classification API/ACEA	SJ/A3
Engine with filter(s) litres	4.0
Other lubricants and capacities
Manual transmission oil grade SAE	80W-90
Manual transmission oil classification	GL-5
Manual transmission litres	2.4
Cooling system - total capacity litres	6.7
Brake fluid Type	DOT 4
Brake fluid litres	0.5
Power steering fluid Type	Dexron II
Power steering fluid litres	1.1-1.3

Brakes & wear limits

Brake disc thickness

Brake discs on the Alfa Romeo 146 1.6 (1994–1997) are replaced at a minimum thickness of 10,2 mm (solid) or 18,2 mm (ventilated) front and 9,2 mm rear.

Minimum disc thickness for replacement - solid Front	10,2 mm
Minimum disc thickness for replacement - ventilated Front	18,2 mm
Minimum disc thickness for replacement Rear	9,2 mm

Brake disc and drum dimensions

Disc runout Front	0,15 mm
Minimum pad thickness Front	1,5 mm
Minimum shoe thickness Rear	1,5 mm
Parking brake travel No. of notches	3

Service & electrical

Ignition timing

The ignition timing on the Alfa Romeo 146 1.6 (1994–1997) is not adjustable.

Ignition timing - basic BTDC °Engine/rpm	Not adjustable

Battery

The Alfa Romeo 146 1.6 (1994–1997) uses a 12 V, 45 Ah battery (reserve capacity 65 minutes).

Battery V/RC(Ah)	12/65 (45)

Spark plugs

The Alfa Romeo 146 1.6 (1994–1997) uses Lodge 25HL spark plugs with a 0,7 mm electrode gap.

Spark plugs Original equipment	Lodge
Spark plug Type	25HL
Electrode gap mm	0,7
Spark plugs Make	Autolite
Spark plug Type	APP62
Electrode gap mm	0,6
Spark plugs Make	Beru
Spark plug Type	14-6DTU
Electrode gap mm	0,8
Spark plugs Make	Bosch
Spark plug Type	W6DTC
Electrode gap mm	0,8
Spark plugs Make	Champion
Spark plug Type	N6YCC
Electrode gap mm	0,8
Spark plugs Make	NGK
Spark plug Type	BP6E-VG
Electrode gap mm	0,7

Tuning and emissions

Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	850±50 Not adjustable
Oil temperature °C	60
CO level at idle speed - tailpipe (Cat) Vol. % CO	0,2 Max Not adjustable
HC level at idle speed ppm	50 Max
CO2 level at idle speed Vol. % CO2	14,5-16
O2 level at idle speed Vol. % O2	0,1-0,5
Increased idle speed for CO test rpm	2500-2900
CO content at increased idle speed Vol. %	0,3
Lambda at increased idle λ	0,97-1,03

Starting and charging

Starter motor Make	Bosch/Marelli
Starter motor Type	0,8/0,9 kW
Minimum starting voltage V	9,0/9,8
Maximum cranking amps A	119-145

Service checks and adjustments

Oil pressure bar/rpm	4,0/4000
Radiator cap bar	0,88-1,08
Thermostat opens °C	86±2

Fuel system

System pressure bar	2,8-3,2
Regulated pressure with vacuum bar	2,3-2,7
Engine coolant temperature (ECT) sensor Ohm/°C	292-362/80
Crankshaft position (CKP) sensor/engine speed (RPM) sensor Ohm	486-594
Injector Ohm	15,5-16,5
Idle air control (IAC) valve/idle speed control (ISC) actuator Ohm	20,0-40,0
Lambda sensor (Oxygen) heater Ohm	3,0

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Alfa Romeo 146 1.6 (1994–1997) are tightened in 3 stages: 30 Nm, then 60 Nm, then a final 91-101 Nm.

Cylinder head
Renew bolts	No
Tighten	30 Nm
Tighten	60 Nm
Tighten	91-101 Nm

Other engine tightening torques
Cylinder head instructions	—
Main bearings Renew bolts/nuts	No
Main bearings Stage 1	—
View more information	—
Main bearings
Big end bearings Renew bolts/nuts	No
Big end bearings Stage 1	25 Nm
Big end bearings Stage 2	53-58 Nm
Sump drain bolt	28-35 Nm
Flywheel/driveplate	97-107 Nm
Clutch pressure plate	19-23 Nm
Crankshaft pulley/damper centre bolt	119-147 Nm
Camshaft sprocket/gear	67-71 Nm
Camshaft carrier/cap	20-24 Nm
Spark plugs	25-30 Nm
Lambda sensor (Oxygen)	43-53 Nm
Chassis tightening torques
Front hub	—
View more information	—
Front hub
Rear hub	266-294 Nm
Steering track rod end	34-42 Nm
Brake disc to hub Front	5-13 Nm
Brake caliper to carrier Front	35 Nm
Brake caliper/carrier to hub Front	50 Nm
Brake caliper to carrier
Brake caliper to carrier Rear	55 Nm
Brake caliper/carrier to hub Rear	22 Nm
Road wheels	83-103 Nm

Air conditioning

No. of AC service connectors	2
Air conditioning restrictor type	Fixed orifice tube
Compressor clutch/magnetic coupling	Yes
Compressor variable displacement solenoid	No
Air conditioning refrigerant Type	R134a
Air conditioning refrigerant quantity grams	700
Air conditioning oil group	PAG
Air conditioning oil Type	SP10
Air conditioning oil quantity cm³	240±15
Air conditioning oil viscosity ISO	46

Frequently asked questions

What is the firing order of the Alfa Romeo 146 1.6?

The firing order for the Alfa Romeo 146 1.6 (1994–1997) is 1-3-2-4.

What spark plugs does the Alfa Romeo 146 1.6 use?

The Alfa Romeo 146 1.6 (1994–1997) uses Lodge 25HL spark plugs with a 0,7 mm electrode gap.

How much oil does the Alfa Romeo 146 1.6 take?

The Alfa Romeo 146 1.6 (1994–1997) takes 4.0 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.

What are the valve clearances for the Alfa Romeo 146 1.6?

Valve clearances on the Alfa Romeo 146 1.6 (1994–1997) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the cylinder head torque for the Alfa Romeo 146 1.6?

The cylinder head bolts on the Alfa Romeo 146 1.6 (1994–1997) are tightened in 3 stages: 30 Nm, then 60 Nm, then a final 91-101 Nm.

What is the ignition timing for the Alfa Romeo 146 1.6?

The ignition timing on the Alfa Romeo 146 1.6 (1994–1997) is not adjustable.