What would happen if driving hhr without the air intake hose on? I noticed my hose was all raggedy and unravelling when i was changing oil and putting in new plugs. Just curious as to what will happen if i drive it anyways without that hose?

 

It won't get cooler air from the fenderwell area. It will be getting hot engine compartment air instead.


Will it throw a code? I don't know.

 

Should not cause permanent damage. You can replace it with a bit of 3" dryer vent hose from the your l;ocal HomeDepot/Lowes etc.

 

You won’t set a code but the warm air will hurt your mileage, so, replace it with dryer flex hose the metal type a 3” diameter one will work.

 

Ok, thanks. What about the flex pipe? Is there a quick band aid fix that can be done temporarily?

 

Duct tape, I’ve seen someone use safety pins , another sewed it back together with fishing line.

 

The flex pipe that is part of the exhaust system...

 

And no quick easy cheap fix.

 

That flex pipe is best repaired by replacing the catalytic converter pipe, only 3 studs and 2 bolts, an then the O2 sensors.
https://ca.autoshack.com/EM63859

Or cut and weld in a replacement part

https://www.chevyhhr.net/forums/how-...ex-pipe-31536/

 

The Wooley Worm hose is just stapled into flexible rubber fittings at each end. I removed the staples and hose from the fittings then went to Lowes and bought a 2" PCV Slip coupler which fit perfectly into the fitting. I then bought 18" of a 3" ID "GS" industrial duct hose made by a company named Flexaust and used hose clamps to attach the ends. Their GS is a 2 ply silicone coated fiberglass fabric product good to 550°F