Hey guys I've had this issue for awhile but with the discovery of this forum I figured I'd try and do some diagnosing. I really notice this on the 2-3 shift but when accelerating between the 2-3k rpm range it feels like him hitting somewhat of a wall. In all honesty it feels like the timing is being pulled pretty significantly. The engine is a little noisy but nothing over the top and I've always read/been told that its normal for the HHR. I'm going to try and pull the plugs some time this coming week to see if that leads to any clues but I wanted to ask here to see if this is a common issue with the 2.4's. Maybe more of a power band issue?

Its an 06 5 speed with a little over 50k miles on it. Once I pass the 3k rpm range there is a noticeable change in acceleration. Also the problem exists in 3rd gear but its not nearly as pronounced and it feels like 3rd is much more torqueir (not even sure that's a word).

Thanks for any help

 

Give this thread a read, I think you're feeling the PE Delay which can cause the engine to feel a bit brain dead right between 2-3k rpm.

https://www.chevyhhr.net/forums/show...wer+enrichment

 

A Trifecta tune would take care of that.......

 

X 2

 

That RPM range is when my HHR with auto is the strongest maybe because of my 2 air filters but I can make my tires chirp at that range.

 

Awesome thanks guys. And here I was thinking my days of mods were over.

 

"And here I was thinking my days of mods were over."

To a true gearhead/rodder, the only time you're done modding is when they put you in the ground...in your custom painted coffin with the flames and extra chrome trim of course.

 

^ x 2 ^

 

Yeah the last ride was turbo AWD and it ate up a lot of time and money but I loved the damn thing. When I decided on the HHR I thought long and hard on the SS but had a momentary lapse in judgement and chose to be frugal (at least that's what I was thinking) and get the 2.4 which would remove any temptations .

Well I guess we will see how long that lasts.

 

Well in my case it was about five minutes, then the credit card took a hit, and then another hit......well you get the idea.