Sais issues with the plastic clamp for hose

[jeffro312]

While under my truck changing encoder motor. I noticed the vacuum sounding pump when u start truck bad a hose loose

Plastic ring connector is broke. So I go to dealer and there telling me to fix that I have to buy the entire hose assembly from the air pump thing to valvles for 135 dollars to fix this little plastic thing

Anyone know if duct tape will hold up. Or where to get this plastic part.

 

[AtlWrk]

Fortunately, I'm pretty sure that's the vacuum side of the pump so it should never see pressure. Personally I'd just gorilla tape it (holds up better than duct tape IMO) and a few zipties should keep it in place. Definitely NOT worth the cost of a entire new hose.

 

[jeffro312]

That's what I was leaning towards


Could that leaking cause bank 1 lean code?? Going on and off by itself causing idle rpm to jump to 900-1000

 

[BlazingTrails]

If I can figure out how to get mine out from behind the engine you can have it for the cost of shipping. I have not really tried yet but it looked tight back there. I tuned mine out so I don't need it.

 

[jeffro312]

If I can figure out how to get mine out from behind the engine you can have it for the cost of shipping. I have not really tried yet but it looked tight back there. I tuned mine out so I don't need it.

Hose connection on mine is right there easy to access once you crawl under driver seat. As to how it comes off or disconnects from house I'm not sure
If you meant entire hose assembly don't waste your time looks too hard too figure where and how it's routed to passenger side of engine etc.

Really appreciate the thought though thanks


How did you tune that out. Probably not something worth me doing at 214k miles is it

 

[BlazingTrails]

Just did it with HP tuners. 214k is not bad. I just bought an 04 ext with 325k that runs great.

 

[jeffro312]

So I taped up and zipped hose now the pump is sounding all crazy and will just come on randomly while driving has higher pitched wine that changes louder and higher then lower quieter

 

[jeffro312]

What is this pump pumping and where too what tells it to turn on like what conditions need to be met for it to get signal to go

 

[BlazingTrails]

What is this pump pumping and where too what tells it to turn on like what conditions need to be met for it to get signal to go

It is my understanding the it only comes on for about 30 seconds when you first start your truck. Somehow it helps warm the catalytic converter faster.

 

[Mounce]

It's pumping air from the intake tube into an orifice right above the exhaust manifold. Said orifice has solenoid on it that actuates a valve and that valve is the common failure point for the system.

You can get a block-off plate for the orifice (lime-swap website has them, can also be found on certain year models at junk yards) and remove the system entirely but then you'll be staring at the check engine light until you tune it out.

 

[BlazingTrails]

It can be had much cheaper here.

http://pages.ebay.com/motors/link/?nav=item.view&id=151579435859&alt=web

http://pages.ebay.com/motors/link/?nav=item.view&id=251830251833&alt=web

No to down play lime but these are cheap and readily available. I spent about 10 min trimming it down and polishing it, used nice Allen head bolts and it looks just like his.

 

[Mounce]

Got a current link to one of the covers? Your link is expired/sold and I can't find another

 

[BlazingTrails]

http://www.gmpartsdirect.com/results.cfm?addtocart=1&addpartnumber=12574378&singlepart=1&partnumber=12574378

All you had to do was search for the part number. Smh

 

[Mounce]

I searched Ebay for it but not google lol. :banghead:

 

[jeffro312]

So I'll try not to be a post whore here and get warned again and get all my thoughts into one post


So assuming since pump sounds funny means its bad looks easy to change should I change it

If my cat is clogged will that effect sais

Besides the noise being gone what is benifit or loss of me deleting the system from truck

 

[Mounce]

No loss really, it's intended purpose is to warm the cat up quicker so it'll start catalyzing the gasses sooner which will reduce emissions compared to if the exhaust gas heat had to warm it up for a few minutes. So, really, it'll just release negligible amounts of emissions for a few minutes.

 

[Zack2003]

Do all the Trailblazers have these?

 

[Mounce]

No. Unfortunately I can't recall what years do and don't have the system. All I know is my 04 EXT doesn't have it but other peoples SWB 04's have it.

My opinion is the only way to know whether you have it or not is to look. It's easily spotted.

Look around the intake resonator (the black box on top of the motor that says vortec 4200) if you have it, there will be some contraption right above the exhaust manifold kinda under the intake tube. If you don't have it, there will be nothing there but an oval piece with two bolts going through it right above the exhaust manifold.