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Date: Thu, 22 May 2003 23:47:01 +0200
From: "Johan Beikes" <j.beikesnopsamdoo.nl>
Subject: Re: FIXED :)))) (WAS: Re: Auxiliary Air Valve Questions)


Paul, Good thing you fixed it. Might it not have been a bad contact on the switch? After all, you had them disconnected and reconnected. It usually helps for bad contacts. Johan "Paul Halliday" <pjghnopsamyonder.co.uk> wrote in message news:BAF05F6E.66DC%pjghnopsamyonder.co.uk... > in article BAEDC95E.6655%pjghnopsamyonder.co.uk, Paul Halliday at > pjghnopsamyonder.co.uk wrote on 18/05/2003 23:38: > > > in article 3ec7daf4$0$76761$1b62eedfnopsam.wanadoo.nl, Johan Beikes at > > j.beikesnopsamdoo.nl wrote on 18/05/2003 20:06: > > > >> Hi paul, > >> > >> As said earlier, depending on temp of the switch, the injector will be > >> activated longer or shorter, or not at all (over 45 C). Indeed, above about > >> 45 C, the switch should be open. > >> > >> It can't be repaired, as it is not merely a sender; it actually controls the > >> duration of the coldstart injection. My 900 T8 also has a defective thermo > >> time switch. I didn't bother to replace it (yet). I have simply disconnected > >> the switch. In these weather conditions, it is not a real problem. It starts > >> getting serious again in fall, where temperatures will drop to 5 - 10 C. > > > > That really clarifies it. Thanks. I tried messing with the EGR system today > > (see the other advice in the thread), but it made no difference. That's a > > good thing, since it really narrows down where the problem could be. > > > > I'll remove the electrics and see how it runs tomorrow. The car is due for a > > good run to work and left standing for about 7 hours when I most notice the > > problem. You say that a short/continuous connection will fire the injector > > too much, especially when cranking - this sounds right. I'll let the group > > know what happens. > > Okay, I pulled the electrical connection to the thermo-timer switch off and > drove the car from cold (overnight cold) this morning. This evening, after a > 7 hour rest, the car would not fire up well at all. I had to leave it about > 15 minutes and re-connect the thermo-time switch to get it to catch. Thanks > Johan, but I think we can rule this one out now. > > When I got home, I had a tinker under the bonnet and among other things > (various clip tightening, "carb cleaning" bits and pieces, etc), tightened > the battery connections up. They were tight enough anyway (I have had a > recent battery change from some unknown brand to a big Lucas and used > conductive grease on the contacts), but I really tightened them up. > > After a 4 hour rest, I fired the car up (with the thermo-timer switch > connected) and it started within a second - much fast than before, which I > needed about a 3 second crank to get it to fire. No problem at all. I'm > getting better boost as well :) Bonus! > > From cold, the idle is still a bit low (about 600 RPM until warm) so I'll > ask my garage to give it an air/fuel tune when it does in on Thursday for > new rear springs. It does generally feel a lot better than before. > > So, the moral ... Tighten the battery terminals as tight as you can and then > ask a body builder to have a go :) > > Thanks to all who made suggestions and helped me along with this problem. > I've learned a lot about a number of things under the bonnet recently. > > Paul > > 1989 900 Turbo S > http://saab.go.dyndns.org/ >

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