What should happen when the ISV is disconnected?

[SJ]

As I recall, nothing much happens when you disconnect the ISV plug . . .
with engine warmed up and A/C not running. I suppose that with an engine
under load . . cold or A/C on or with radiator blower on . .disconnecting
the ISV will stall the engine.

Your problem sounds like a sticking ISV. Changes in weather might make the
problem intermittant. In my case, cold weather made the valve stick . . .car
would stall when brought to a stop. I guess whatever makes it stick(built up
gunk) congeals at lower temps and really becomes sticky. Once the car and/or
weather warmed up . . .the ISV worked fine.

Removing the ISV is easy enough. Ditto for cleaning it. I think I used carb
cleaner or throttle body cleaner. Worked like a charm. You can use a 9 volt
battery to check ISV operation.

SJ
85 Dodge PU, D-250, 318, auto
85 Audi 4k - - sold but still on the road
88 Audi 5kq
90 Audi 100q



>
> Message: 4
> Date: Sat, 29 Nov 2003 20:09:55 -0800
> From: Mike Robinson <quattrofan at sbcglobal.net>
> Subject: What should happen when the ISV is disconnected?
> To: quattro list <quattro at audifans.com>
> Message-ID: <BBEEAD93.4423%quattrofan at sbcglobal.net>
> Content-Type: text/plain; charset="US-ASCII"
>
> Hi all,
> I am in the midst of solving an intermittent stumbling idle problem on my
89
> MC-1 200q.  The car idles normally when started cold, but I often have to
> heel-toe it at stops to keep the idle from dipping and sometimes the car
> stalling.  This does not always happen, and usually after giving it a
little
> gas for a while the car while idle normally.  I have not checked for any
> leaks in the PCV hoses or in the intake yet.  The car drives wonderfully
> otherwise.  When I disconnected the ISV wiring, the car died immediately.
> Is it supposed to do this?  I recall hearing other listers say their cars
> would idle higher with the switch disconnected.  Could the valve be sticky
> or stuck closed?  Any insight would be appreciated.
>
> Mike Robinson
> --------------
> 88 90q
> 89 200q MC-1
>
>
>
> ------------------------------
>
> Message: 5
> Date: Sun, 30 Nov 2003 04:26:53 +0000
> From: "Robert Mangas" <porter_t_dog at hotmail.com>
> Subject: Cheap web space (was: What relays..)
> To: tquattroguy at yahoo.com, antar at comcast.net, quattro at audifans.com
> Message-ID: <Sea2-F66isTp7GMCoYz0003b739 at hotmail.com>
> Content-Type: text/plain; format=flowed
>
>
>   How about $11 one-time fee for 25MB online?
>
> http://www.ms11.net/?referral=cpanel
>
> >From: Todd Phenneger <tquattroguy at yahoo.com>
>
> >   Anyone
> >know of a good place to put a website up for free/cheap?
> >   l8r
> >      Todd
> >
>
> _________________________________________________________________
> Share holiday photos without swamping your Inbox.  Get MSN Extra Storage
> now!  http://join.msn.com/?PAGE=features/es
>
>
>
> ------------------------------
>
> Message: 6
> Date: Sat, 29 Nov 2003 23:27:25 -0500
> From: Ameer Antar <antar at comcast.net>
> Subject: Re: Steering Problems
> To: quattro at audifans.com
> Message-ID: <20031130042702.887074D32F at audifans.com>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1"
>
> I'd pick up the wheel at each corner and see if the wheels are loose. Take
a close look at ball joints, tie-rod ends, etc. I don't know much about
diff's affecting steering...good luck.
>
> -Ameer
>
> ---Original Message---
> Date: Sun, 30 Nov 2003 03:03:15 +0000
> From: bludodger at att.net
> Subject: Steering Problems
> To: quattro at audifans.com
> Message-ID: <113020030303.17304.1e88 at att.net>
>
> I have been having steering problems with my car. The best way to describe
> the symptoms would be a "floating" sensation. There is no favoritism to
one
> side or the other (as you would experience if the car was pulling).
Instead
> the car seems to drift where it wants to go regardless even if the
steering
> wheel remains straight ahead. By the way,  there are no abnormal sounds
while
> this happens. The problem is accentuated or easier to feel when the car is
on
> the highway (at higher speeds and trying to go straight vs. slow and and
on
> turns).
>
> I am suspecting something is wrong with the rear axles of the car or some
> component of them (ie. wheel bearings, struts, or control arms). I feel
this
> way because I think the problem started up after the car's diff lock was
> engaged and was driven at high speeds and for an extended time period (30
> min) with it locked up--(don't ask).
>
> My thoughts are that the rear axle sustained abnormal amounts of torque
> during the diff. lock situation. Has anyone experienced any of this type
> behavior from their quattro? Does anyone believe that I am on the right
> track? Any other ideas of where I should start?
>
> Thanks for any help
> --
> Blu
> '88 80q--201,000mi.
>
> PS I had the car aligned before the diff lock mishap and i do not suspect
the
> tires. Could the car just need alignment again?
>
>
>
> ------------------------------
>
> Message: 7
> Date: Sun, 30 Nov 2003 04:40:03 +0000
> From: "Robert Mangas" <porter_t_dog at hotmail.com>
> Subject: Re: Cannot remove O2 sensor *
> To: knotnook at traverse.com, iceisit at earthlink.net, quattro at audifans.com
> Message-ID: <Sea2-F221PMk7CJrryI0001473f at hotmail.com>
> Content-Type: text/plain; format=flowed
>
>
>   Ditto on the heat, but don't bother with wimpy propane.  Go right to
> oxy/acetylene, heat it red, let it cool a bit, and it'll come out with a
> crescent wrench.    Amazing stuff, acetylene.
>
> >From: Kneale Brownson <knotnook at traverse.com>
> >To: Cat <iceisit at earthlink.net>, quattro at audifans.com
> >Subject: Re: Cannot remove O2 sensor *
> >Date: Fri, 28 Nov 2003 21:17:54 -0500
> >
> >Heat?
> >
> >Did you really mean an eight-foot extension?
> >
> >At 09:04 PM 11/28/2003 -0500, Cat wrote:
> > >My husband cannot seem to remove the O2 sensor from the 87 Audi 5000.
> > >I tried an 8' extension and also liquid wrench.
> > >
> > >Any suggestions?
> > >
> > >Cat
> > >
> > >~
> > >
> > >^. .^   ~
> > >
> > >   "Destiny is fate, minus the power of one, divided by intervention."
> > >
> > >
> > >_______________________________________________
> > >quattro mailing list
> > >quattro at audifans.com
> > >http://www.audifans.com/mailman/listinfo/quattro
> >
> >_______________________________________________
> >quattro mailing list
> >quattro at audifans.com
> >http://www.audifans.com/mailman/listinfo/quattro
>
> _________________________________________________________________
> Share holiday photos without swamping your Inbox.  Get MSN Extra Storage
> now!  http://join.msn.com/?PAGE=features/es
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> ------------------------------
>
> Message: 8
> Date: Sat, 29 Nov 2003 23:40:54 -0500
> From: Ameer Antar <antar at comcast.net>
> Subject: Re: Cannot remove O2 sensor *
> To: quattro at audifans.com
> Message-ID: <20031130044033.6DF2E4CB89 at audifans.com>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1"
>
> For me, the $15-20 for the sensor is nothing, especially compared to all
the other yearly maintinence you have to pay for. About the universal type
vs. OEM terminal, for me the choice is obvious. The sensors themselves are
the same and made by Bosch, so there's no difference in quality. Regarding
splicing, I don't see an issue. Of course you never want to splice the green
wire b/c this is part of the car's harness, but rather the old sensor's
black wire. In my car, the PO had bought the OEM terminal type which has
quite a bit of extra length (as if they expect mechanics to splice it). So
the terminal is actually OEM, and all you need to do is make a simple crimp
(and heatshrink for a pro install) to connect the old sensor's wire to the
new one's. I personally reserve the term "hacking wires" only for cutting
the vehicle's harness which should never be done. I always like mods that
can be removed to bring the car back to original. In this case, there's only
one wire to cut (th
>  e sensor's, not the vehicle's) and you can easily just unplug the old
sensor wire and replace w/ a full cost OEM type if you really wanted to...no
damage done to the car. And since a big company like Bosch sells both types,
they also must feel that it's not a big deal to splice, otherwise they could
easily claim that it is bad for the cars and end up making more money on the
OEM sensors. Just my 2 cents.
>
> -Ameer
>
> ---Original Message---
> Date: Sat, 29 Nov 2003 08:57:40 -0600
> From: "Livolsi, Stephane" <Stephane.Livolsi at investorsgroup.com>
> Subject: RE: Cannot remove O2 sensor *
> To: "Audi Quattro List" <quattro at audifans.com>
> Message-ID: <A9CCC2FEA3353D4B9BB3D1DC8939777002167FB2 at igamail3.iga.bz>
> Content-Type: text/plain; charset=us-ascii
>
> I have to agree with all of Ameer's points except one...
>
> Relative is....well....relative...
>
> Unless you are willing to go non-OEM and hack some wires, the O2 sensor
> for a 5k can't really be called cheap.
>
> Also, Cat, when I did the sensor on my 87 5ktq and the 88 5ktqa, I found
> it best to set aside some time and remove the aircleaner, and the big
> metal pipe from the fuel dist to the turbo.  It just helps to have as
> much room as possible.
> On the 86 5ktq, I also had to cut the wires and use a regular socket.
> The problem is that once you do that, you are committed and theres no
> going back.  That O2 sensor MUST come out because there is not enough
> wire to splice the connector back on.
>
> HTH some and good luck.  It is worth the effort as I had much better
> running and driveability on both my cars.
>
> Stephane
>
> > -----Original Message-----
> > From: Ameer Antar [mailto:antar at comcast.net]
> > Sent: November 28, 2003 10:46 PM
> > To: quattro at audifans.com
> > Subject: Re: Cannot remove O2 sensor *
> >
> >
> > Hey Cat,
> > I would use something a little better than liquid wrench. I
> > use PB Blaster which is from the local NAPA, but I'm sure if
> > you ask a decent auto parts store, they will get you the good
> > stuff (maybe different name). Spray several times, soaking it
> > as much as you can, then wait a day or a few hours. If it's
> > still stuck, sometimes I end up cutting the wire very close
> > to the metal so I can fit a normal deep socket w/ no cutout.
> > That should give a bit better torque. Impact wrenches are
> > also very good at this stuff b/c of the impacts which make
> > removing bolts 100x easier than even w/ a breaker bar. When
> > putting in the new sensor, make sure it comes w/ silver
> > anti-seize paste on the threads to prevent this from
> > happening again. If not you can also get this at the parts
> > store. Just make sure to use a small amount only on the
> > threads, otherwise it could ruin the sensor if it got inside
> > the tip. Make sure to replace the O2 regularly and this
> > shouldn't happen again. I would never bother t  o test an O2
> > if in doubt on the early cars since they're relatively cheap
> > and a marginal O2 can make a car run poorly. Good luck.
> >
> > -Ameer
> >
> > ---Original Message---
> > Date: Fri, 28 Nov 2003 21:04:39 -0500
> > From: Cat <iceisit at earthlink.net>
> > Subject: Cannot remove O2 sensor *
> > To: quattro at audifans.com
> > Message-ID: <v0422080abbedaedee45a@[63.186.168.236]>
> > Content-Type: text/plain; charset="us-ascii"
> >
> > My husband cannot seem to remove the O2 sensor from the 87
> > Audi 5000. I tried an 8' extension and also liquid wrench.
> >
> > Any suggestions?
> >
> > Cat
> >
> > ~
> >
> > ^. .^   ~
> >
> >    "Destiny is fate, minus the power of one, divided by
> > intervention."
> >
> >
> >
> >
> > ------------------------------
> >
> > _______________________________________________
> > quattro mailing list
> > quattro at audifans.com http://www.audifans.com/mailman/listinfo/quattro
> >
>
>
>
> ------------------------------
>
>
>
> ------------------------------
>
> Message: 9
> Date: Sun, 30 Nov 2003 04:41:16 +0000
> From: "Robert Mangas" <porter_t_dog at hotmail.com>
> Subject: Re: Steering Problems
> To: bludodger at att.net, quattro at audifans.com
> Message-ID: <Sea2-F22jhVrKvZKPUV0001474d at hotmail.com>
> Content-Type: text/plain; format=flowed
>
>
>      I'm with Ameer- I bet it's uncontrolled motion in one of the joints.
> If it's not, I've had tires do odd things as they wear...
>
>
> hth,
> Robert
>
> >From: bludodger at att.net
> >To: quattro at audifans.com
> >Subject: Steering Problems
> >Date: Sun, 30 Nov 2003 03:03:15 +0000
> >
> >I have been having steering problems with my car. The best way to
describe
> >the symptoms would be a "floating" sensation. There is no favoritism to
one
> >side or the other (as you would experience if the car was pulling).
Instead
> >the car seems to drift where it wants to go regardless even if the
steering
> >wheel remains straight ahead. By the way,  there are no abnormal sounds
> >while
> >this happens. The problem is accentuated or easier to feel when the car
is
> >on
> >the highway (at higher speeds and trying to go straight vs. slow and and
on
> >turns).
> >
> >I am suspecting something is wrong with the rear axles of the car or some
> >component of them (ie. wheel bearings, struts, or control arms). I feel
> >this
> >way because I think the problem started up after the car's diff lock was
> >engaged and was driven at high speeds and for an extended time period (30
> >min) with it locked up--(don't ask).
> >
> >My thoughts are that the rear axle sustained abnormal amounts of torque
> >during the diff. lock situation. Has anyone experienced any of this type
> >behavior from their quattro? Does anyone believe that I am on the right
> >track? Any other ideas of where I should start?
> >
> >Thanks for any help
> >--
> >Blu
> >'88 80q--201,000mi.
> >
> >PS I had the car aligned before the diff lock mishap and i do not suspect
> >the
> >tires. Could the car just need alignment again?
> > > The piston has to be turned while under slight pressure to help it.
> > >
> > > There is often a big rusty hex indent in the center to help with this,
> > > or two nothes for special tools.  Large pliers used carefully on the
> > > sides work, though.
> > >
> > > > I was hoping this was going to be an easy rear brake pad replacement
> >but
> > > > noooooooo.... I have been trying to compress the rear piston but it
> >wont
> > > > budge... I literally bent the piston compressor tool.  What am I
doing
> > > > wrong???
> > >
> > > --
> > > Huw Powell
> > >
> > > http://www.humanspeakers.com/audi
> > >
> > > http://www.humanthoughts.org/
> > >
> > > _______________________________________________
> > > quattro mailing list
> > > quattro at audifans.com
> > > http://www.audifans.com/mailman/listinfo/quattro
> >
> >_______________________________________________
> >quattro mailing list
> >quattro at audifans.com
> >http://www.audifans.com/mailman/listinfo/quattro
>
> _________________________________________________________________
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>
>
> ------------------------------
>
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> quattro at audifans.com
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>
>
> End of quattro Digest, Vol 1, Issue 48
> **************************************