Date: Sun, 27 Aug 2006 00:03:49 +0000 (UTC) From: Craig's Saab C900 Site <c900nospam.apana.org.au> Subject: Re: Last Chance for My '85 900
CMM <newsgroupinkynospamail.com> writes: >On Sun, 20 Aug 2006 21:39:49 +0000 (UTC), Craig's Saab C900 Site ><c900nospam.apana.org.au> wrote: >> >>It's easy to check the operation of these components - use the methods >>described in the Bentley manual. In my 1985 900i there is a break in the +12 >>v wire coming from the fuse/relay panel going to the warm-up reg and >>auxilliary air valve resulting in the at-start idle speed being really low >>(around 500 rpm), but as soon as the engine starts to warm up the idle speed >>comes up to the standard 850 to 900 rpm. >> >>One of my future repairs is to fix that broken wire. >How important is the cold-start injector? Does it have to be hooked up >(wires & fuel line) for the car to run well? I live in a warm climate >and don't have trouble w/ winter starts? Well you don't have to use it - all it does is inject pulses of fuel vapour to make starting easier and after about 10 seconds it shuts off when the thermo-time switch's bi-metallic strips heats up. So if the cold-start injector isn't working it just makes the engine harder to start when it's not already warmed up. My white 900S has the thermo-time switch disconnected as it's got some sort of a wierd semi-short which holds the starter auxilliary relay engaged after letting go of the ignition key. I only had one spare brand-new thermo-time switch and that's already been used up on the turbo car I'm restoring so I need to get another one. 8-) >>Apparently the 1985 cars are particularly prone to failed wiring which is >>something to do with the manufacturing of the wiring harnesses by a contract >>supplier to Saab. I'm not sure if it's a quality-control thing or simply >>using sub-standard wire. >The wires in the '85 are terrible. The insulation seems to be made out >of a substance about as durable as gelatin. Yeah well I've only got one significant wiring faults in my 85 900i and that's with the +12 volt line to the warm-up reg and auxilliary air valve. So that engine runs really slow after starting but is fine after warming up. The wires to the AC high-temp cutout switch are also really bad - almost bare copper at the ends that join to the the female spade lugs which plug onto the thermo-switch itself. 8-) But that'll be simple to fix when I get some auto-rated wire of the right gauge, or just 'borrow' some out of the wiring harness in the 83 GLi that's my current 'donor' car. Craig. -- Craig's Saab C900 Page at | Craig's Classic Saab Workshop - Sydney .au http://nospam/~c900 | http://www.classicsaab.net and other URL's Email: c900nospam.apana.org.au | For Saab 99/C900/9000 Enthusiasts World-Wide! Alternate: saabonautnospaml.com | Web-forums, galleries, library, links, etc.
