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Volkswagen Jetta, Golf, GTI: 1993-1999, Cabrio 1995-2002 (A3) 97 Golf 2.0L Vacuum Leak Help Needed


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Last Post: Feb 22, 2015 5:30 PM Last Post By: train.stamp
train.stamp

Posts: 170
Registered: 07/30/06
97 Golf 2.0L Vacuum Leak Help Needed
Posted: Feb 18, 2015 11:45 AM
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For too long this car has been running rough and sometimes stalling at idle. It seemed to me that it was acting like it had a vacuum leak. The CEL light was/is on also but I have no way to read the code. The first time I raised the hood I got lucky. I found a vacuum hose with one end loose and by plugging the hose with a pencil I was able to fix the running problem.

Now the fun begins because I don't see where the loose end of the hose is supposed to go. The connected end goes to a tee. I suspect that the loose end goes to the Evap. canister purge valve but how to find it is the question. Can someone tell me how to get to it please? Is it located under the air filter box? If I can find out where this hose is supposed to go I will have an auto parts store read the odes for me and reset the CEL. I have taken some photos to show what this problem looks like which I will post shortly. Thanks in advance.
train.stamp

Posts: 170
Registered: 07/30/06
Re: 97 Golf 2.0L Vacuum Leak Help Needed
Posted: Feb 18, 2015 1:26 PM   in response to: train.stamp in response to: train.stamp
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Attachment IMG_8425.jpg (807.6 KB)
Here is a photo of the hose in question showing one end plugged with a pencil. While this has temporarily fixed the running problem, I would like to find out where the loose end of this hose goes.
Any helpwill be appreciated. I have checked my Bently but did not find the help I need.

Edited by: train.stamp on Feb 18, 2015 1:28 PM

Edited by: train.stamp on Feb 18, 2015 1:30 PM
train.stamp

Posts: 170
Registered: 07/30/06
Re: 97 Golf 2.0L Vacuum Leak Help Needed
Posted: Feb 18, 2015 3:36 PM   in response to: train.stamp in response to: train.stamp
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More info: In thumbing thru the Bentley I found this.......on page 20-10 (Fuel Storage and Supply). Figure 12 shows a diagram of what I think is the loose vacuum hose coming from a tee and going to the leak detection pump. That's it, no more information like how to find it or where it is located. (Thanks a lot Bentley). So now if someone could tell me how to find it, I would be ever so grateful to them.
FKH161

Posts: 7,661
Registered: 12/29/05
Re: 97 Golf 2.0L Vacuum Leak Help Needed
Posted: Feb 21, 2015 9:52 PM   in response to: train.stamp in response to: train.stamp
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Have a look at this:

http://faculty.ccp.edu/faculty/dreed/Campingart/jettatech/t-belt/Dsc04218.jpg

The vacuum hose that is next to the brown plastic line at the air box, needs to attach to the vacuum pod under the maf sensor. The pod has a vacuum operated door, the door opens when the engine is cold and allows warm air for the exhaust to enter the air box.

Someone attached your vacuum hoses incorrectly.

The hose that is currently attached to the black plastic tube at the air box, needs to attach to the T piece to the right of the MAF, then use one of the two hoses (from the hose that is currently plugged) and attach it to the vacuum pod under the MAF and the other end to the black plastic tube that is on the air box.

I can post a better image / video tomorrow.... if need be.
train.stamp

Posts: 170
Registered: 07/30/06
Re: 97 Golf 2.0L Vacuum Leak Help Needed
Posted: Feb 22, 2015 9:18 AM   in response to: FKH161 in response to: FKH161
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Thanks FKH161 for you're reply and photo, I was hoping you would respond. Last night we got snowed in again so today I first have to clear snow for the umpteenth time so I can check my hoses. Then I will post my findings and let you know if I need more help.

My wife used the car the day before yesterday and said it ran fine, however, she tried to use it yesterday but it acted like the battery was dead. I went out to see about this and the battery seemed OK and should have been OK considering she had made a long enough trip to have charged the battery up good. At any rate, I now have a new problem to straighten out in addition to the hose problem.

Yesterday I put my charger on the battery as a precoution and left it on over night (trickle charger). So now, if the battery is OK, I will first check it with my meter to be sure it has the proper voltage. I suspect that there may be an under lying problem here because all I got was just a starter "click" the first time I checked the "dead battery" issue and the heater fan would not come on but the dome light was working fine. At that point it started to snow so I couldn't go any further. Today I will try and make sense out of all this and get back to you.

This is the same car, by the way, about a year ago, that you tried to help me with that wound up having a bad ignition coil.
FKH161

Posts: 7,661
Registered: 12/29/05
Re: 97 Golf 2.0L Vacuum Leak Help Needed
Posted: Feb 22, 2015 2:40 PM   in response to: train.stamp in response to: train.stamp
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Sorry... slight mistake on my part.

EDIT:

I'll get you a picture later today.

Edited by: FKH161 on Feb 22, 2015 2:42 PM
train.stamp

Posts: 170
Registered: 07/30/06
Re: 97 Golf 2.0L Vacuum Leak Help Needed
Posted: Feb 22, 2015 3:10 PM   in response to: train.stamp in response to: train.stamp
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Attachment IMG_8429.jpg (862.1 KB)
Attachment IMG_8428.jpg (1,012.7 KB)
Attachment IMG_8427.jpg (827.4 KB)
Attachment IMG_8426.jpg (847.9 KB)
Cleared the snow off this car, removed the battery charger and then checked battery voltage which was 12.7 volts. The engine started fine. Why didn't it start yesterday? I hate this kind of situation, not knowing what was going on. I won't worry about it unless it happens again.

Back to the hose problem.......I tried to print out a copy of the photo you sent (FHK161) but low and behold my printer ran out of ink. (Maybe I am getting up on the wrong side of the bed?). Then I took my laptop out to the car to see if I could trace the hoses but the screen wasn't bright enough in the bright sun light. I will try tis again tonight when it gets dark. Next I took a few more pix of the hose delema with the idea that you (FHK161) might be able to doctor up one of these and send it back to me showing where they should be.

Hold off on doctoring one of my new photos. I was able to to get the printer going and will take the print out to the car and report my findings.
FKH161

Posts: 7,661
Registered: 12/29/05
Re: 97 Golf 2.0L Vacuum Leak Help Needed
Posted: Feb 22, 2015 3:15 PM   in response to: train.stamp in response to: train.stamp
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Leave everything as it is.

The currently plugged vacuum hose is supposed to wrap around the front of the air filter box and go down to the charcoal canister (like you suspected). Remove the air box for better visibility.

I had a blond moment yesterday (and this morning)... hence my edit above.
train.stamp

Posts: 170
Registered: 07/30/06
Re: 97 Golf 2.0L Vacuum Leak Help Needed
Posted: Feb 22, 2015 5:30 PM   in response to: FKH161 in response to: FKH161
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No problem with your blond moment. I went back to the car after you said don't change anything. Looked
straight down in front of the air box with a small flash light and was able to see what looked like a nipple that belonged to this hose. How to reach it without getting underneath the car? I removed the headlight bulb to give my fingers a bit of room and also the top air box hose which gave me just enough wiggle room to slip the pencilless hose back on the nipple. Apparently I found the right spot because upon starting the engine it ran nice and smooth. I also checked battery voltage with the engine running and got 14.3 volts so I know the alternator is doing it's job. For now I think the old Golf is fixed, until the next time. I will take it to Autozone to get a CEL reading. Thank you FKH161 for your response.

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