[T3] Question about D jet idle issues 73 T3

Tue Jan 26 18:53:21 PST 2016

Tram has me running Premium only in my '69 FI/AT square, which is 89 octane
in Oregon.

On Tue, Jan 26, 2016 at 6:35 PM, Keith Park <topnotch at nycap.rr.com> wrote:

> Stock 73 should run 89 but if you dont have the stepped heads 92min.
> I had to completely re-jet the carbbed cars and adjust the FI
> on the FI cars to run with todays gas, big change in gas
> here in NY several years ago and CA is probably worse.  RUnning the Ethanol
> will require the FI to run richer, unplugging the IAD temp sensor is one
> way
> to do that, in Hollywood you dont need the cold start system as much so
> this
> is acceptable.
> the other thing you can do is bump up the Fuel pressure to say, 33 or 34psi
> and see how it runs.  But MAKE SURE everything else is exactly right first,
> valve, timing etc or you can screw up a system that wasnt the problem in
> the
>
> first place and be in even more of a hole.
>
> Make sure your not trying to run the E15, that stuff is NASTY NASTY!
>
> Keith
>
>
> Topnotch Restorations
> topnotch at nycap.rr.com
> http://www.a383ina68.addr.com/radiorest/main.htm
> 71 Squareback  "Hothe"
> 65 Notchback  "El Baja Rojo"
> 93 RX7  "Redstur"
> 87 Golf  "Winterat"
>
>
> -----Original Message-----
> From: type3-vwtype3.org [mailto:
> type3-vwtype3.org-bounces at lists.vwtype3.org]
> On Behalf Of William J
> Sent: Tuesday, January 26, 2016 7:47 PM
> To: type3 at vwtype3.org
> Subject: Re: [T3] Question about D jet idle issues 73 T3
>
>  I live in Hollywood , CA . I was using 87 octane exxon then switched to
> Shell 89 octane. It seemed to have a bit more power with 89 Shell yet
> didn't
>
> change the idle issues. I think the ethonal is 10%
>
>  Off topic ,it does have oil leaks , a bit at a few push rod tube seals but
> mostly on the left side might be old oil cooler seals . I wanted to clean
> it
>
> all off so I can find where the leaks are. The runner hoses have oil on all
> of them but that seems to be blowing up from the torque converter cooling
> fins or just from air flow. It does not burn oil.
>
>  I would like to pull the runners and IAD and upper tin to replace at least
> the runner hoses and cooler seals . I'm not sure if the intake gaskets can
> be reused . I doubt they are cracked but the paper gaskets might need
> replacing.. The old ones I tossed didn't know they would become so
> difficult
>
> to locate these days. They never cracked . I used this brush on sealer Ford
> used when I worked as a Tech for them for over 40 years. It was just a thin
> sealer we used on gaskets. I only see runner hoses at one place now . Mine
> ar the old German ones with the cloth covering.
>
>  I don't drive much and not long trips yet since this is my only car I
> can't
>
> do a lot unless I can get it done in a few days.
>
>  William
>
> William
> ----- Original Message -----
> From: "Keith Park" <topnotch at nycap.rr.com>
> To: <type3 at vwtype3.org>
> Sent: Tuesday, January 26, 2016 4:19 PM
> Subject: Re: [T3] Question about D jet idle issues 73 T3
>
>
> > what gas are you running?  What part of the country, what elevation?
> >
> > Keith
> >
> >
> > Topnotch Restorations
> > topnotch at nycap.rr.com
> > http://www.a383ina68.addr.com/radiorest/main.htm
> > 71 Squareback  "Hothe"
> > 65 Notchback  "El Baja Rojo"
> > 93 RX7  "Redstur"
> > 87 Golf  "Winterat"
> >
> > -----Original Message-----
> > From: type3-vwtype3.org
> > [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]
> > On Behalf Of William J
> > Sent: Tuesday, January 26, 2016 5:54 PM
> > To: type3-vwtype3.org at lists.vwtype3.org
> > Subject: [T3] Question about D jet idle issues 73 T3
> >
> > Has anyone run across issues with an unstable idle that clears up with
> the
> > IAD temp sensor is unplugged ? It only shows up when there is no load
> auto
> > trans in park engine warmed up . If I give it gas from 900 RPM idle speed
> > and watch the tach for lack of a better term it seems to stuggle until it
> > reaches 2000 RPM.
> >
> > I first noticed this when I opened the tail gate with it warm and runing
> I
> > could hear an erratic miss out the exhaust , it's not one cylinder . Also
> > if
> > I am driving say 30 MPH and let off the gas quick I hear a slight popping
> > out the exhaust.
> >
> > The only thing that seems to cure this is to unplug the IAD temp sensor .
> > I
> > assume it is running lean.
> >
> > It has all the proper E system parts and I have not found a vacuum leak
> so
> > far. With the IAD temp sensor connected and driving under load it seems
> > fine
> > other than the popping .
> >
> > It has the electric AAR which does close although it s eems to take
> longer
> > to close that  it used to. I just changed the MAP to a NOS Bosch #  0 280
> > 100 116. It holds vacuum and the resistence is within spec. Compared to
> > the
> > old one with the temp sensor plugged in it's better yet still stuggles
> > with
> > no load . My voltage is 14.3 at 1500 RPM. I don't have access to read the
> > actual mixture I am just going by the way it acts.
> >
> > William
> >
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