Date: Tue, 12 Jul 2005 04:52:17 +0000 (UTC) From: Craig's Saab C900 Site <c900nospam.apana.org.au> Subject: Re: engine wiring anomalies (c900)
John B <rotten_NOSPAM_nospam.org> writes: >While conducting a routine oil change this afternoon, I noticed a couple of >strange things with the wiring on the intake side of the engine. >First, the main cable from the battery's (+) terminal has a serious insulation >problem near where it connects to the starter. It looks like the insulation is >cracked and possibly a little burned and/or melted. The insulation on the >neighboring wire looks a bit damaged as well. Photograph here: >http://home.ccil.org/~rotten/DSCF0130.JPG Given the current that a starter draws it's highly likely to be a combination of heating due to the terminal resistance where the cable attaches to the solenoid going up just due to age and contact degradation, and also due to that end of the high-current cable being the closest part which is near the heat of the engine when running. Additionally, the end of the insulation is a point where contaminants, moisture, etc. will 'wick' into the multistrand copper cable over a period of time so that's probably part of it too. >Next, I happened to notice a wire connected to the intake manifold at one end, >and nothing at the other end. It looks like a ground wire for something, but I >don't know what. Photograph here: >http://home.ccil.org/~rotten/DSCF0131.JPG >Opinions on these issues welcome. I'm especially wondering about the battery >cable, as I certainly don't want the broken insulation to spread down the wire >and short the battery. The car (a 1992 900 NA) is running very well, FWIW. I agree that the small wire coming off the intake manifold is an earth for something. Check the alternator to make sure it's connections are all in place, but to save the wire causing any shorts take it out and replace the bolt. Then, with the wire kept safely somewhere in case it is needed, have a look to see if there's anything nearby which looks like it's had a lug come away. Regards, Craig. -- Craig's Saab C900 Page --> http://nospam/~c900 Sydney, NSW Australia Craig's Saab C900 Workshop -- For all Saab C900 Enthusiasts world-wide! http://www.nospam.net http://www.nospam c900nospam.apana.org.au Come and explore our site, and check out our web-forums, mailing list, etc.
 |
 |
 |
 |
 |
