2012 Chevy Cruze Rough Idle Issues - Need Help!

Maintenance and Repairs
21

That’s a smart tip! I’ve successfully diagnosed a few issues this way for my Cruze.

22

Does anyone know what the expected idle RPM should be? Maybe mine is running too low or too high.

23

The ideal idle RPM for a Chevy Cruze is usually around 600-800 RPM. Make sure to check that!

24

Thanks for that! I’ll check it out. It’s no wonder my car was sounding like a blender!

25

Inspect vacuum hoses, too! A leak can lead to an unstable idle. They’re often overlooked but crucial for smooth performance.

26

Great idea! Those hoses can wear out without us even noticing. Let’s hope that’s the culprit!

27

I worried it was something major when my Cruze started idling rough, but it turned out to be just a small vacuum leak. Don’t stress too much!

28

Rough idling? Sounds like a terrible dance move! But seriously, don’t overlook the fuel injectors. They need cleaning or replacement sometimes.

29

I’ve had similar issues with my 2012 Cruze. A common cause is a dirty throttle body. Cleaning it can solve rough idle problems for less than $100. Definitely worth a try before going to a shop.

30

Thanks for the insight, Jason! I might try cleaning the throttle body first. Any recommendations for where to get it done?

31

If you’re looking for professional help, I highly recommend checking a local mechanic who specializes in Chevys. They usually have better deals than dealerships. My buddy spent around $200 for a similar fix.

32

That’s helpful, Jessica! I definitely want to avoid dealership prices. What about replacing the spark plugs?

33

Replacing spark plugs can help, but be aware of the cost of parts and labor. Expect to pay about $150 total if you do it at a shop. It may resolve rough idles if they’re worn out.

34

I had my spark plugs replaced last year and it did wonders for the rough idle! Make sure you use OEM parts for the best results. It’s tempting to go for cheaper options but OEM lasts longer.

3 Likes
35

Great advice! Does anyone know if aftermarket parts are also a good choice for the Cruze?

4 Likes
36

Aftermarket parts can work well, but they vary by brand. Research and read reviews before buying. I’ve had mixed experiences with aftermarket options for my Cruze.

37

Thanks for that! I’m leaning toward OEM to avoid issues. Is there a way to check if the idle issue is anything serious?

4 Likes
38

A rough idle can sometimes indicate a more serious issue like a vacuum leak or fuel system problem. A diagnostic scan can help identify the root cause. Most shops charge about $100 for that.

6 Likes
39

Good point! That could save a lot of guessing. I’ll get that scan done before making any decisions.

40

I must say, diagnosing a rough idle can feel like a wild goose chase! Just don’t get frustrated. Be patient; sometimes it’s the simplest things like a loose hose.

6 Likes