Most Common Car Issues

Selected parameters

Model
325iS
Model Year
1991

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MOST COMMON PROBLEMS

BMW 325iS 1991

The 1991 BMW 325iS is a classic 2-door sedan featuring a 2.5L 6-cylinder engine producing 168 horsepower. Manufactured in Regensburg, Germany, this E30 series model comes with an automatic transmission and a supplemental restraint system (SRS). It runs on gasoline and is designed for those who appreciate BMW's engineering excellence.

Spec:

Engine Brake (hp) From
168
Engine Manufacturer
BMW-AG
Engine Model
4-Value
Engine Number of Cylinders
6

Problems:

Oil leaks
1991 BMW 325iS models are known for developing oil leaks over time, often from the valve cover gasket, oil pan gasket, or rear main seal.
Cooling system issues
These vehicles can suffer from cooling system problems including radiator leaks, water pump failures, and thermostat issues, which can lead to overheating.
Timing belt/chain issues
The timing belt or chain can wear out or fail, leading to engine performance problems or even catastrophic engine damage if not replaced at recommended intervals.
Fuel system problems
Fuel injectors and fuel pumps can become clogged or fail, causing poor engine performance or stalling.
Electrical problems
The aging electrical system may lead to issues such as faulty sensors, wiring problems, or issues with the ignition system.
Vacuum leaks
Vacuum hoses can become brittle and crack over time, leading to rough idling, poor acceleration, and increased emissions.
Head gasket failure
Higher mileage engines may experience head gasket failure, which can cause coolant and oil to mix or lead to overheating.
Exhaust system corrosion
The exhaust system components, including the catalytic converter and mufflers, can corrode over time, leading to exhaust leaks and increased emissions.
Worn engine mounts
Engine mounts can wear out, causing excessive engine movement, vibrations, and noise during operation.
Sensor failures
Common sensor issues include the mass air flow (MAF) sensor, oxygen sensors, and crankshaft position sensor, leading to poor engine performance and fuel efficiency.
BMW 325iS 1991

The 1991 BMW 325iS is a classic 2-door sedan from the E30 series, powered by a 2.5L inline-six engine producing 168 hp. Manufactured in Regensburg, Germany, this model features an automatic transmission and manual seat belts. It offers a blend of performance and elegance typical of BMW's engineering prowess.

Spec:

Engine Brake (hp) From
168
Engine Manufacturer
BMW-AG
Engine Model
4-Value
Engine Number of Cylinders
6

Problems:

Oil leaks
1991 BMW 325iS models are known for developing oil leaks over time, often from the valve cover gasket, oil pan gasket, or rear main seal.
Cooling system issues
These vehicles can suffer from cooling system problems including radiator leaks, water pump failures, and thermostat issues, which can lead to overheating.
Timing belt/chain issues
The timing belt or chain can wear out or fail, leading to engine performance problems or even catastrophic engine damage if not replaced at recommended intervals.
Fuel system problems
Fuel injectors and fuel pumps can become clogged or fail, causing poor engine performance or stalling.
Electrical problems
The aging electrical system may lead to issues such as faulty sensors, wiring problems, or issues with the ignition system.
Vacuum leaks
Vacuum hoses can become brittle and crack over time, leading to rough idling, poor acceleration, and increased emissions.
Head gasket failure
Higher mileage engines may experience head gasket failure, which can cause coolant and oil to mix or lead to overheating.
Exhaust system corrosion
The exhaust system components, including the catalytic converter and mufflers, can corrode over time, leading to exhaust leaks and increased emissions.
Worn engine mounts
Engine mounts can wear out, causing excessive engine movement, vibrations, and noise during operation.
Sensor failures
Common sensor issues include the mass air flow (MAF) sensor, oxygen sensors, and crankshaft position sensor, leading to poor engine performance and fuel efficiency.
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