new vaccuum lines, still no air from vents and lean codes

new vaccuum lines, still no air from vents and lean codes

Postby AllOutofBubblegum [OP] » May 11th 2014, 1:41am

I replaced all the vacuum lines while trying to fix the no air from vents problem. The vent problem persists, and now I have a CEL for lean codes on both banks. Van try's to die at idle while in drive. Seems to be the worst after switching from reverse to drive.

What should I check first?
Original Poster [OP]
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Re: new vaccuum lines, still no air from vents and lean code

Postby Astro Pop » May 11th 2014, 2:10am

You have all the symptoms of a large vacuum leak. Check the PCV system and all vacuum lines on the top of the engine and look real close at the HVAC system again. The noise should make it easy to locate. In order to almost kill the engine it is a rather large leak so get someone to hold the throttle at 1200 to 1500 rpm while you look around for the hissing noise. The age of these vans is showing up in a lot of rotted rubber vacuum lines, probably your problem when you wiggled just the wrong line while fixing the other leak.
Good Luck
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Re: new vaccuum lines, still no air from vents and lean code

Postby BigWheelinBubba » May 11th 2014, 2:43pm

Use starting fluid, spray it around all the rubber while it's running. When idle increases you found your leak.
A lot of times the purge canisters get cracked or the vac lines going to it get cracked. Make sure you check that area too. It should be located under the battery.
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Re: new vaccuum lines, still no air from vents and lean code

Postby AllOutofBubblegum [OP] » May 12th 2014, 2:46am

Well, this won't help anyone else, and I feel like an idiot, but I find it hilarious so I'll share.

When I replaced the vacuum lines last I was racing the sun going down and pretty frustrated.

When I reconnected the new line that is on top of the motor, to the right of the air inlet hose, I somehow put it on the stud that is right below the air nipple, and left the nipple completely open. Wow. I'll get a flashlight next time.

All my problems are fixed now. Thanks guys.
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