Thread: 3400 Vac Line Question

This isn't a Grand Prix, it is actually for a Grand Am.

The car has been running kinda rough, especially at idle. Already changed the Plugs and Wires but it still idles rough.

Looking at the engine bay, I came across a broken Vac line. Which I assume must be the problem.

The question is, where does this vacuum line lead too? I cannot seem to find the end of it so I can replace it.

BillBoost to the rescue?

Could it go to the EVAP under the ICM/Coils or the MAP (unless I see the MAP plugged into the 1" piece directly into the side of the UIM)?

It goes into the wiring harness right there. They all break.

I was wondering that to.. I saw where it goes back, but couldn't make out if it went to the harness or not. I was like WTH in the harness?? LOL

Originally Posted by dsmuts

It goes into the wiring harness right there. They all break.

Dan, I need a plan of attack.

How can I fix this problem?

Open the wiring harness there right by the tb and use rubber hose to reconnect it.

I looked at it.

Its kinda tucked back into the wiring harness.

Looks like a pain in the ass a bit.

Just get to it best you can and put a rubber vacuum line on there. I did this on almost every 31/3400 I've worked on because they always break right there.

Does Autozone carry just random vacuum tubing? And do you know what size I need?

Also, What is that vacuum line for?

Not sure what it runs to but take that little piece that's left on there with you and they will have what you need. Get 3 ft to be sure you have enough.

Thanks for the help Danno.

Ill get on this sometime soon.

No problem. Is this some chicks car you're trying to bang or something?

Well this is awkward....

It was my dads car, but now my mom drives it. The charger that we just sold was my moms car.

We sold the charger to get rid of the car payment and we bought a 99 Mazda Miata - Manual, instead.

So my mom now drives the Grand Am GT, and my dad drives the Miata.

Oh lol

So to answer your question, this is not for some chick I'm trying to bang.

shew.... LOL