Vacuum hose help, visual aid....

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Oct 4, 2012 | 01:35 AM

#16

feeniks4.9

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From: Phoenix-or-thereabout

Originally Posted by zunijoe

I'm in Virginia and the truck was built in Norfolk, Va. Do you know where the charcoal canister/purge valve connection would be located or what it looks like? I have looked high and low...

Quote:

Originally Posted by tiap

Here is a pic of the purge valve but keep in mind this is a 94 van, so location might be different.

zunijoe - if that is indeed what you are looking for, yours should be nestled all snug and cozy under the intake manifold. Hard to see and probably a pain to get in and out - be careful you don't go tugging on any hoses though, if yours is like mine they'll just turn to dust on you...

Oct 4, 2012 | 05:32 PM

#17

zunijoe

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I think you have answered my question...the small (1/4" top port) on the PCV should be plugged. This problem came up without any warning so I tried to start from basics. After checking the exhaust for blockage, replacing the fuel and air filters, I replaced the PCV valve. The top port on the old PCV was open (no plug) and there wasn't an available line to connect. Those plugs are hard to install and, I would assume, even harder for the engine to spit out. I didn't want to change something that wasn't broken while I tried to find out what was wrong.

Anyway, thanks for your time. I will, eventually, post the results.

Oct 15, 2012 | 07:47 AM

#18

zunijoe

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Problem solved. The PCV valve needed the small port plugged. What happened to the old plug is still a mystery to me. My problem was the MAP sensor shorted out. Replaced and the truck runs better than it has in several years.