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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Isuzu Impulse car and truck
repair procedures including Isuzu engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your 1991 Isuzu Impulse automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1991 Isuzu Impulse
- 1991 Isuzu Impulse RS 1.6 L4 GAS, CC:1588, Fuel Injection, Engine VIN:, Desg:4
- 1991 Isuzu Impulse XS 1.6 L4 GAS, CC:1588, Fuel Injection, Engine VIN:, Desg:5
BRAKE SERVICE PROCEDURES FOR 1991 Isuzu Impulse AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Isuzu Impulse cars and light trucks from 1990+.
POWER BRAKE UNITS -> DESCRIPTION -> SINGLE VACUUM UNIT -> TANDEM VACUUM UNIT
Vehicle: 1991 Isuzu Impulse RS 1.6 L4 GAS
SINGLE VACUUM UNIT
In a normal operating mode, with the service brakes in the released position, the single vacuum booster operates with vacuum on one side of the diaphragm. When the brakes are applied, air at atmospheric pressure is admitted to one side of the diaphragm to provide the power assist. When the service brake is released, the atmospheric pressure is cut off from the one side of t...
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BRAKE SERVICE PROCEDURES FOR 1991 Isuzu Impulse AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Isuzu Impulse cars and light trucks from 1990+.
ANTI-LOCK BRAKES -> COMPONENT REPLACEMENT -> Amigo, Pickup & Rodeo -> Amigo, Pickup, Rodeo & Trooper w/Rear Wheel ABS -> ELECTRONIC BRAKE CONTROL MODULE (EBCM) -> ELECTRONIC CONTROL MODULE (ECM) -> FRONT SPEED SENSOR -> G-SENSOR -> HYDRAULIC UNIT -> Impulse -> Impulse & Trooper w/Four Wheel ABS -> ISOLATION/DUMP VALVE -> REAR SPEED SENSOR -> SPEED SENSOR -> Trooper w/Four Wheel ABS -> Trooper w/Rear Wheel ABS
Vehicle: 1991 Isuzu Impulse RS 1.6 L4 GAS
These components are non-serviceable and must be replaced as a unit, do not try to disassemble components.
HYDRAULIC UNIT
Impulse
- Remove undercover, then inner liner, Fig.
- Disconnect harness connectors.
- Remove radiator reservoir tank.
- Disconnect brake lines from hydraulic unit, then cap lines to prevent entry of foreign material into brake system.
- Remove ground strap retaining bolt, then ground cable.
- Remove bracket fixing bolt, then hydraulic unit fixing nuts.
- Remove hydraulic unit from vehicle.
- Reverse procedure to install, noting the following:
- Torque hydraulic unit fixing nuts, ...
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BRAKE SERVICE PROCEDURES FOR 1991 Isuzu Impulse AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Isuzu Impulse cars and light trucks from 1990+.
ANTI-LOCK BRAKES -> DIAGNOSIS & TESTING -> 1990-91 -> 1992 -> AMIGO, PICKUP, RODEO & TROOPER w/REAR WHEEL ABS -> IMPULSE -> PIN-OUT TESTS -> READING TROUBLE CODES -> RETRIEVING TROUBLE CODES -> SELF-DIAGNOSIS -> TROOPER w/FOUR WHEEL ANTI-LOCK BRAKES -> TROUBLE CODE DIAGNOSIS -> WARNING LAMP DIAGNOSIS -> WIRING CIRCUITS
Vehicle: 1991 Isuzu Impulse RS 1.6 L4 GAS
Some diagnostic procedures require that the ignition switch remain on for extended periods of time while tests are performed. Low battery voltage may result, causing erroneous voltage readings. If vehicle system voltage becomes low, it is advisable to connect a battery charger and apply a slow charge while testing.
IMPULSE
SELF-DIAGNOSIS
The ABS system is equipped with self diagnostic capability which may be used to assist in isolation of ABS failures. The Anti-Lock warning lamp will illuminate if a malfunction in the Anti-lock brake system is detected by the Electronic Brake C...
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BRAKE SERVICE PROCEDURES FOR 1991 Isuzu Impulse AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Isuzu Impulse cars and light trucks from 1990+.
ANTI-LOCK BRAKES -> DESCRIPTION -> AMIGO, PICKUP, RODEO & TROOPER w/REAR WHEEL ABS -> IMPULSE & TROOPER w/FOUR WHEEL ABS
Vehicle: 1991 Isuzu Impulse RS 1.6 L4 GAS
IMPULSE & TROOPER w/FOUR WHEEL ABS
The anti-lock brake system works on all four wheels. A combination of wheel speed sensor and electronic brake control module (EBCM) determines when a wheel is about to stop turning and adjusts brake pressure to maintain best braking. This system helps the driver maintain greater control of the vehicle under heavy braking conditions.
AMIGO, PICKUP, RODEO & TROOPER w/REAR WHEEL ABS
The rear wheel anti-lock (RWAL) system continuously monitors rear wheel rotation during braking and corrects ...
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BRAKE SERVICE PROCEDURES FOR 1991 Isuzu Impulse AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Isuzu Impulse cars and light trucks from 1990+.
DISC BRAKES -> BRAKE PAD SERVICE -> AMIGO, PICKUP, RODEO & TROOPER -> FRONT -> IMPULSE & STYLUS -> Installation -> REAR -> Removal
Vehicle: 1991 Isuzu Impulse RS 1.6 L4 GAS
FRONT
IMPULSE & STYLUS
- Raise and support vehicle and remove front wheels.
- Remove upper and lower caliper mounting bolts, then remove caliper from disc, leaving brake hose attached. Do not let caliper hang by brake hose.
- Remove brake pads, with shims, from support bracket.
- Apply thin coat of suitable grease to rear face of new brake pad and install shim.
- Push in caliper piston and install pads.
- Install caliper assembly, then tighten retaining bolts to specification.
AMIGO, PICKUP, RODEO & TROOPER
Removal
- Raise vehicle and remove wheel assembly.
- Remove lock bolt from caliper.
- Posit...
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BRAKE SERVICE PROCEDURES FOR 1991 Isuzu Impulse AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Isuzu Impulse cars and light trucks from 1990+.
DRUM BRAKES -> ADJUSTMENTS -> AMIGO, PICKUP, RODEO & TROOPER -> BRAKE PEDAL -> IMPULSE & STYLUS -> PARKING BRAKE -> SERVICE BRAKE -> STYLUS & IMPULSE -> With Rear Disc Brakes -> With Rear Drum Brakes
Vehicle: 1991 Isuzu Impulse XS 1.6 L4 GAS
BRAKE PEDAL
STYLUS & IMPULSE
Measure the brake pedal height after making sure the pedal is fully released by the pedal return spring. Measure pedal height as shown in Fig. dimension "L." Measurement should be 6.22 inches. If measurement is not as specified, proceed as follows:
- Loosen the stop lamp switch.
- Loosen locknut on the pushrod.
- Adjust the pushrod to the specified pedal height.
- Tighten locknut.
AMIGO, PICKUP, RODEO & TROOPER
- Measure brake pedal height and free play, Fig. with brake pedal fully released.
- On Amigo, Pickup & Rodeo models, pedal height should be 6.85-7.24 inches. On Tro...
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