I swapped the 2.4 intake mani and throttle body over to my 2.2. I totally forgot to get the hose from the intake mani when I bought the stuff but finally found the hose. It had a vacuum leak because of the hose problem and now that I swapped it to the correct hose from the 2.4, it still is doing it. I made sure everything was tight and not loose fitting. Anyone that has done this swap lend a idea to help figure it out.

 

Are you talking about the brake booster hose under the throttle body?

 

I believe so? Sorry, I'm not completely sure what that line is called. It's what would connect to the yellow nipple. It acts like it wants to die and drops to 500 rpm's but doesn't die. Doesn't do it all the time but when it does, it's very annoying. LOL

 

I just got a male to male barbed brass fitting that was the correct size, and coupled another length of hose to that nipple and then used hose clamps on all of the connections. Works dandy for me. Are you using hose clamps?

 

Which yellow nipple? top or bottom? There are two in that pic. I think you're talking about the EVAP purge valve. That hose being broken causes all sorts of surging problems. Check for cracks. If there are minor ones, use E-6000 adhesive and let it dry at least overnight. To my knowledge that hose and fitting has no replacements. I've been looking a very long time.

If you're talking about the one on the bottom it's the brake booster hose.

 

Yeah, the one that's connected to the intake manifold. I had a male-to-male connector but it still did the same thing, figured I would just get the stock 2.4 hose.

 

disconnect the battery for 15+ minutes to reset the ecu. see if that helps

 

I did that when I did the swap and it still did it.

 

don't you have to re tune with the 2.4 TB?

just spay some carb and choke cleaner and when it revs up you found the Vac Leak

 

Yea you should retune for it

 

It's hit and miss. You *should* retune but the car may not care if you swap them anyway. Or it may throw a huge temper tantrum. I ran 2.4TB for 6 months before I tuned for it.

 

My car hates my 2.4 throttle body. Probably because its for an hhr.

 

IDK mine was from a 2010 Equinox.

 

I got my TB from a 05 SS/NA. I had it retuned for it and still the same thing.

 

what ecu year and model do you have? every thing changed after 08

 

I have a 2005 base model.

 

Oh so youre untunable... I would just go back to the 2.2 throttle.

 

Untunable, how am I untunable?

 

You can only be tuned by trifecta

 

How is that untunable? I know people don't care for them per-say

 

i personally wouldnt deal with all that. seems like a huge hassle

 

Well, I only have GM to blame because that's the only company that can tune my year of cobalt.