1984 4k - no startjlagnese at massed.net jlagnese at massed.netTue 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 - >> > >> > >> > >> >> >_______________________________________________ >> >quattro mailing list >> >http://www.audifans.com/mailman/listinfo/quattro > >> >http://www.audifans.com/kb/List_information > >> >> >> >> >> >> >> _______________________________________________ >> quattro mailing list >> http://www.audifans.com/mailman/listinfo/quattro >> http://www.audifans.com/kb/List_information > > >
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