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Discussion Starter · #1 ·
My transmission fault light has come on several times. However, it is running fine, has never been put into limp mode, and does not produce transmission codes when scanned @ autozone.

Another thing i just noticed; the fault light does not come on if i turn the key to "on" before i start it.

I could not find a similar problem on the forum; any ideas?

Thanks!
 

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Another thing i just noticed; the fault light does not come on if i turn the key to "on" before i start it.
Turn the key to "on" and leave it there for several seconds ??
Do the battery, charging system service.
Its a very voltage sensitive system....
Maybe a little corrosion at the range switch ??
 

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Discussion Starter · #3 ·
Mainly I switch it to "on" while it does the system check; after it says "ok," i start the car & receive no fault lights.
 

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My transmission fault light has come on several times. However, it is running fine, has never been put into limp mode, and does not produce transmission codes when scanned @ autozone.

Another thing i just noticed; the fault light does not come on if i turn the key to "on" before i start it. A clue ?

I could not find a similar problem on the forum; any ideas?

Thanks!
This may be a clue as to what is amiss.
I usually pause for a nanosecond at "ON".
But I see no good reason for this..
Start up still takes two seconds or less.
 

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Discussion Starter · #5 ·
regarding the battery/charging system service, I did not find a thread related to that; is there one here on this site?
 

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The Saab has no oil pressure gauge nor a voltmeter built in , as, IMO, it should..:evil::(:cry:
I use a $3 HF multimeter, unbelievable that it works so well, and for so long.... On an annual basis I run a battery load test and I measure the battery capacity and the alternator output.
I should keep a book on this...
I wish to have NO breakdowns on the road, I am too old for that stress.
HF = Harbor Freight:cheesy:
The entire shebang that I use cost about $30 (charger, testers, cables, etc);ol;
 

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Discussion Starter · #7 ·
HF multimeter

For the test w/ the multimeter is DC 20V the proper setting?
And I should be looking for around 20 V?
 

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Roughly 14v at an idle, but at least 13.5v under a load(everything on).
I use a HF load tester to check the battery condition. The inspection od all the cables and grounds is important, with an older vehicle, a man never knows what can happen and when.
The "up to" 20v is the most used, but do be careful, military vehicles use 24v. Its fun using a multimeter, so many things can be done.
 
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