Hi everyone, I reeally am glad I bought an HHR! Everything has been good up till now. Problem: noise on acceleration, and pretty much all of the rest of the time. Is this serious?

 

Gee, that is real specific!

I would take a real leap and suggest that you check the flex pipe, if you mean even not moving. If only when moving then check your hub/bearings.

 

Welcome to the site.

"Noise on acceleration" is waaay to vague of a description. Add some more details such as what kind of noise(thumping, whining, scraping etc.) Also, where it seems to come from(engine area, exhaust, front, back etc.)

A random guess would be a busted flex pipe. Do a search for flex pipe and you'll find numerous threads about it.

 

donbrew. I guess you and I were typing at the same time.

 

My HHR sounds like an electric car. The sound came out of nowhere.
I'm afraid that it's a big rubber band and it is going to bust one day, but I
have AAA.

 

Keep an eye on the thread you started recently, not 3 year dead threads.

 

I consolidated everything into one thread.

As mentioned above, it could be a leaking flex pipe so give this thread a read by clicking the link below.....

https://www.chevyhhr.net/forums/how-tutorial-library-21/how-repair-flex-pipe-31536/

If the noise sounds more like a bicycle chain being dragged across something metal, that could be a failing timing chain or chain tensioner. So listen carefully to the passenger side of the engine with the hood up for a buzzing/clattering sound. A failing chain, chain guides, or tensioner are potentially catastrophic failures which will destroy the engine if not caught in time.

I'd suggest having it checked professionally.

P.S. to the forum!