1984 4k - no start
jlagnese at massed.net
jlagnese at massed.net
Tue Aug 4 14:36:53 PDT 2009
Hopefully it keeps running!
---- Original message ----
Date: Tue, 4 Aug 2009 17:15:20 -0400
From: "Bares, Vittorio"
<Vittorio.Bares at nuance.com>
Subject: RE: 1984 4k - no start
To: "L DC" <ldc007usa at yahoo.com>,
<jlagnese at massed.net>, <quattro at audifans.com>
>Shweet ebay find! I've emailed the seller to see
if he carries the dist for the 84.
>
>I went out to the car (just finished replacing
upper links, tie rod ends and a cv boot on the A4
- its been a very tough Audi August ;)) to
diagnose some more.
>
>With a test light - I checked all 4 connections
to the coil - they all lit up just fine.
>
>Checked all the fuses just in case.
>
>Put the cap back on the distr - and thought, ah
what the heck lets see if anything has changed.
She started right up - damn!
>
>The only thing I've learned is that my fuses are
good, the coil lights up the test light and the
fuel pump seems to be behaving properly. I rolled
under the car while blipping the throttle, it
didn't seem to change noise.
>
>Its still not running quite right though, under
light acceleration it misses slightly (if your
just cruising, maintaining a constant speed, 35 or
so, although the speed seems to be irrelevant) -
Under full throttle it seems to respond well - but
I'd say its slightly under power. Like it wasn't
getting full flame in the pistons or something -
but its hardly noticeable...
>
>My suspects right now remain:
>-- ignition module
>-- hall sensor/distr
>-- fuel relay
>-- coil (distant but possible contributor)
>
>Although, I worry about the old wiring in this
rig - there could be a break anywhere :\
>
>Vittorio -
>
>-----Original Message-----
>From: L DC [mailto:ldc007usa at yahoo.com]
>Sent: Tuesday, August 04, 2009 4:28 PM
>To: jlagnese at massed.net; quattro at audifans.com;
Bares, Vittorio
>Subject: Re: 1984 4k - no start
>
>
>Check the hall sender connections at the
distributor. If is loose, engine vibrations would
be enough to cause intermittent failures.
>
>In one of my VW QSWs (same engine and tranny- JT
code- as in 4KQ) the plastic wheel inside the
distributor broke, causing it to completely
fail--no spark. It happened at a gas station right
after filling the tank. I started the car and
everything went dead 5 seconds or so later.
>
>In any event, $175 just for the hall sender is
ridiculous. You could get a whole rebuilt
distributor for as low as $85 plus free shipping
from e-Bay. As with any purchase on the internet,
especially automotive parts, make sure you contact
the seller to make sure they send you the correct
part.
>
>http://tinyurl.com/l6kvo7
>
>-Regards,
>
>-Louis
>
>
>> From: Bares, Vittorio
<Vittorio.Bares at nuance.com>
>> Subject: Re: 1984 4k - no start
>> To: jlagnese at massed.net, quattro at audifans.com
>> Date: Tuesday, August 4, 2009, 3:22 PM
>> Don't have a bentley for the 4k. I'm
>> in s.NH. Would love to borrow 1 if u'r close
by.
>>
>> ________________________________
>>
>> From: jlagnese at massed.net
>>
>> To: Bares, Vittorio; quattro at audifans.com
>>
>> Sent: Tue Aug 04 13:18:56 2009
>> Subject: RE: 1984 4k - no start
>>
>>
>> I just plugged in another. Do you have an
extra? If not,
>> where are you? You could borrow one of my
extras. I do have
>> a few known working units. They are the same on
quite a few
>> VW/Audi. This went south on my 87 16V Scirocco.
I actually
>> used one from a 91 Jetta IIRC.
>>
>> I'm sure that the Bentley has a way to check.
>>
>> John
>> ---- Original message ----
>>
>>
>> Date: Tue, 4 Aug 2009 12:25:43 -0400
>> From: "Bares, Vittorio"
<Vittorio.Bares at nuance.com>
>> Subject: RE: 1984 4k - no start
>> To: <jlagnese at massed.net>,
>> <quattro at audifans.com>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> How does one test that?
>>
>>
>>
>>
>>
>> Also, there was a suggestion to check
>> the
>> 12v at the coil - coil has 4 wires
>> (2-green on one side, 2 black on the
>> other connector) - which ones deliver
>> 12v to the coil? (they look awfully
>> thin)
>>
>>
>>
>>
>>
>>
>>
>> Vittorio -
>>
>>
>>
>>
>>
>>
>>
>>
>> ________________________________
>>
>>
>>
>>
>>
>> From:
>> jlagnese at massed.net
>> [mailto:jlagnese at massed.net]
>>
>> Sent: Tuesday, August 04, 2009
>> 11:48 AM
>> To: Bares, Vittorio;
>> quattro at audifans.com
>> Subject: Re: 1984 4k - no start
>>
>>
>>
>>
>>
>>
>> Check the spark control unit. Its
>> piggybacked on the computer.
>> ---- Original message ----
>>
>>
>> Date: Tue, 4 Aug
>> 2009 10:42:59 -0400
>> From: "Bares, Vittorio"
>> <Vittorio.Bares at nuance.com>
>> Subject: 1984 4k - no start
>> To: <quattro at audifans.com>
>> >So, has new wires, rotor, cap, plugs
>> - was running fine - then about a
>> >week ago, while driving it - it just
>> stopped running.
>> >
>> >
>> >
>> >I cleaned the contacts on the coil -
>> started again, but wasn't running
>> >well. Almost as if it was running on
>> 4 cyl (it is a quattro 5cyl :-)). I
>> >was trying to diagnose by pulling
>> one sparkplug at a time while it was
>> >running, not much change when I did
>> so - consistently for all 5 plug
>> >wires.
>> >
>> >
>> >
>> >Pulled the plug on the temp sensor
>> in the rear of the head - no diff.
>> >
>> >Pulled the plug on the sensor that
>> is on the fuel distributor - no diff.
>> >
>> >
>> >
>> >This morning - no start...
>> >
>> >
>> >
>> >No spark.
>> >
>> >
>> >
>> >I'm thinking hall sensor??
>> >
>> >
>> >
>> >Vittorio -
>> >
>> >
>> >
>>
>>
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