Close

Pontiac G8 Rough Idle

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

What are common reasons my Pontiac G8 has a rough idle?

While there are a variety of reasons your Pontiac G8 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

Get your Pontiac issue diagnosed by a professional

Find a high quality auto repair shop or dealer near you
x

Related Pontiac G8 Questions

See what others are asking about their Pontiac G8. Get answers from RepairPal's community of auto experts and enthusiasts.
Sets p0175 rich condition bank #2

Pontiac G8 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