vacuum leak?

sno · Dec 16th, 2002, 10:08 PM

here's the problem: when i'm idling in drive (i have an auto) with my foot on the break it idles kinda rough, at about 600rpm. if i turn the wheel then the idle drops down to 200rpm for just a second, then goes back up to 600rpm. if the car is in neutral then it idles fine, at 800rpm like it should. i doubt this has to anything to do with the battery or alternator because i have a red top optima battery and a bosche alternator which is only a year old.

i asked a mechanic about this and he said it sounded like a vacuum leak. if it is, how hard would it be to find the leak and replace whatever was leaking?

hagasan · Dec 16th, 2002, 10:28 PM

What he was talking about it the vacuum lines.

I'm not sure, but I think you can just look at the lines and find the bad one.

Once you know which one is leaking (it might be more than one) , it's piss easy to replace.

sno · Dec 16th, 2002, 11:54 PM

thanks for the help

Centurion · Dec 17th, 2002, 08:36 AM

Try the EGR area, seems like the hoses there like to rot.

sno · Dec 17th, 2002, 07:59 PM

this may sound like a dumb question... but where might i find the egr area? or even the vacuum line? i looked in the sentra bible and couldn't find any pictures of what this stuff might look like.

Centurion · Dec 17th, 2002, 08:19 PM

It's this thing (not a Nissan pic). It is sort of under the throttle body area to the right, roughly speaking.

sno · Dec 17th, 2002, 09:16 PM

okay, i'll have to look there tomorrow. thanks again

sno · Dec 19th, 2002, 08:37 PM

okay, so i found the EGR... this thing:

it had two hoses coming off of it, both of which are fine. i'm still at a loss on finding the vacuum lines. help!