It's not really very hard!
You just need to get the motivation to do it. Or a case of beer and a mechanically inclined friend. Or give a friend $100 to do it. Beats wasting your paycheck at a scummy dealership...
What is the SAI system for? I'm not a VR guy, but my father in law is looking at a 97 passat with a VR^ in it and when we test drove it it had a engine code light on. so we told them that we wanted them to check it out before we thought about buying and they came back and told us that the code was a P0411. I'm not sure if I want to take the chance on buying it hoping that it is just a bad hose.
The SAI is an emissions system. It pumps warm air into your exhaust until the car is fully warmed up, it does this to reduce emissions. If you're buying from a dealership or used car place, make them fix it. If its private party, I'd ask them if they'd lower the price by 1k to cover possible expenses if you want to attempt to repair it yourself or have a shop do it.
Its not going to hurt the car to throw the code or have a problem with SAI, unless your state does scan tool emissions testing.
very good information. [IMG]http://*****************.com/smile/emthup.gif[/IMG] too bad i don't have the time to do this. just got the code the other day, and found the pump is working and it's prob. the hose. getting some other stuff done at KMDtuning so i'm gonna let them fix it.
Thanks for the info, its extremely helpful. [IMG]http://*****************.com/smile/emthup.gif[/IMG]
Just to be clear on the instructions, I blew through the breather hose from the airbox and Air passed freely, I cannot blow through combi valve unless its under vacuum.
Does this mean the pump is bad? I hear the pump activate when idling and using vag-com to test it.
Modified by JTestman at 6:22 AM 11-22-2005
A FYI about bad Combi Valves before you spend $$ on them.
My Combi Valve was stuck shut, giving me the code (Everything else checked fine, and I replaced the vac hoses anyway)
I removed the valve, filled it with Carb cleaner (from the output side, which was full of black guuk). Let it sit for a few minutes. Dumped, and repeat a few times.
I was able to hear the valve open/close with my handy "Mouth Vac" on the vaccume hose.
Reinstalled, and it's been working fine for the past 2 years. At the very least... if it gunks up again, I can fix it long enough to work if I get another Emissions test request.
Quote, originally posted by 1993jetta GL » also my car is not running right! It runs like crap when cold! The car idles fine but when I give it gas it sometimes hesitates!
i have the same problem, getting my car VAG'ed next week and i'm guessing its a P0441 or some other problem..... figures i have inspection in january too
yeah whats up with the 2001 vr6s is this a common problem for them or did vw reroute the hose for hte mk4s. I just helped my friend do his on his 97 vr and it was a pita dont want to do this on my car. any idea if this probllem still persists on 01's
Quote, originally posted by 1993jetta GL » I have the same code on my 2001 VR6! Is this problem the same for MK4 model cars as MK3! also my car is not running right! It runs like crap when cold! The car idles fine but when I give it gas it sometimes hesitates!
thanks for a great thread. very very helpful. i will try to fix my p0411 problem this weekend. hopefully all goes well and i'll end up with a car that passes emmissions. then i'll get me some alaskan amber too!
bump for all the guys with recent SAI problems...
sai system - [IMG]http://*****************.com/smile/emthdown.gif[/IMG] [IMG]http://*****************.com/smile/emthdown.gif[/IMG]
this thread - [IMG]http://*****************.com/smile/emthup.gif[/IMG] [IMG]http://*****************.com/smile/emthup.gif[/IMG]
has anyone ever noticed what a bad combi valve on a S/C or Turbo car feels like???
Does it cause a hesitation under vaccuum and clean up while in boost??
I am trying to narrow down where this hesitation is coming from, and this thread just made me think about the combi valve and the solenoid.
When you jack the motor up as you described, are you able to reach the vac hoses as well? I'm gearing up to do this in the next few weeks and I want to know what is the best approach.
BTW, great post, thanks to all involved! [IMG]http://*****************.com/smile/emthup.gif[/IMG]
is it at all possible to get to the vac line/combi without jacking up the engine and unbolting the front mount if you go underneath the car? i'm not a big fan, nor fully confident, in using a jack to hold up an engine.
nope, believe me i tried!! i didn't want to do it either, but it's cool, just put something between the jack (i use a thick softcover book to spread weight) and the end of the transmission housing where it meets the block. It's very solid and can support the weight, and there's no chance of denting it and messing up oil feed like with the oil pan. Also, you don't have to jack it up extremely far. When you drop it back down, you may have to shake the engine around a bit to get the bolt to thread in, sometimes the holes don't quite line up perfectly.
Also, when you are getting the bolt for the combi out, there's one for the intake manifold right next to it, so if the combi doesn't come out you probably got the wrong one like i did, hehe..
here is a visual of why you can't get to it from below...
this was taken when I replaced the crack pipe and tstat housing, so they are gone and the SAI pump is loosened, otherwise there is of course nowhere near this much clearance.
lol i had to replace that stoopid plastic coolant pipe before a couple months after i got my car. my first experience with a vr6 was not a pleasant one, but i understand by what you mean about no room to work. today i finally get to give all this a try. off to buy some emissions tube right now. thanks for all your help soren.
so i tried to check out the relay/fuse first to start out easy (no such thing though, right? ) wtf is the 30a fuse? is it that metal jumper on the relay housing?
anyone have a pic of the 111 relay housing that shows where the fuse is? i couldn't find it. thinking maybe mine is missing.
Modified by veedub8422 at 3:01 AM 3-14-2006
bump for SAI problems, everyone has delt with this stupid system. I finally fixed my ish after 2 years, put a new combi and lines in, fingers crossed that it's finally fixed [IMG]http://*****************.com/smile/emthup.gif[/IMG]