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Oldsmobile Alero Rough Idle

Learn if it's a simple fix or time to seek out a trusted technician.

What are common reasons my Oldsmobile Alero has a rough idle?

While there are a variety of reasons your Oldsmobile Alero has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
34%
of the time it's
Vacuum Leak
21%
of the time it's
Spark Plugs
15%
of the time it's
Ignition Coil

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Related Oldsmobile Alero Questions

See what others are asking about their Oldsmobile Alero. Get answers from RepairPal's community of auto experts and enthusiasts.
Installed water pump and thermostat now car idles fast and tries to die when you stop also sounds rough when idling. ...
In neutral its just a little vibration , but when in drive it shakes pretty bad , thr MOTOR mounts look ok amd intact...
Oldsmobile Alero Repairs and Prices
All costs based on RepairPal Fair Price Estimate™ averages. Actual prices may change depending on final diagnosis.

Oldsmobile Alero Rough Idle Repair Symptoms

A failing ignition coil can create several symptoms: Check engine light comes on Engine runs poorly or stall Increased emissions Reduced fuel economy Car won’t start I...Read More
When spark plugs fail, the engine will struggle. The check engine light will come on, and it may appear either solid or flashing. The driver would likely notice one or more of t...Read More