great to see your article on the saab inboard
diagnostic system. It is a valuable tool that surprisingly
few Saab owners are aware of. Your instructions however were a little
misleading. While it may be the #3 pin on 2.2 systems, it is the
#2 pin when dealing with the 10 pin connector under the back seat
(2.4 system) I do not know what the effect of grounding #3 pin would
be, but it seems possible that one might run the risk of making
what can often be a frustrating problem even worse. I have a 1989
900 and use the 'official service manual' (single volume, years
85 -93) put out by Bentley Publishers. It is a great book that has
helped me learn a lot. I would however appreciate any tips on finding
additional information - on line or in print, and/or a directory
of qualified/talented Saab mechanics in my area. I would especially
interested in finding a page along the lines of back yard jacks
do it yourself Saab diagnostics and repairs. Perhaps I am dreaming.
I recently changed the headgasket on my car. While the repair remedied
the pre-existing problem, it has left me with a whole new set of
bugs. The fault codes I am getting 12223, 12112, 12111. The most
in your face problem, however, is an extremely erratic idle. I have
checked all vacuum hoses and and almost all the major components.
I haven't bothered with oxygen sensor because the problem is most
serious when the engine is cold - it is my understanding that the
oxygen sensor doesn't begin to work until operating temp is reached.
I am going to check my air mass meter today. After this I am afraid
I might have to give up because I lack the equipment to properly
test fuel pressure ( this where my request for help in finding a
good mechanic comes in). I feel like a beaten dog. Would love to
hear back from you. Thanks from Maine.
I will have to go over that
flash code article and try to make it more clear. This is why
I suggest adding a fuse to the jumper to avoid such problems. As
far as additional information on line or in print I really don't
know of much, and you have the best after market manual already.
Here are a few things to check that I have seen go bad during a
headgasket job. For your car I would double check the camshaft timing
and all the air plumbing to your turbo and intake manifold. Check
the wiring to the coolant temp sensor between cylinder 2 and 3 on
the intake manifold. Make sure it is plugged in all the way or has
not been swapped with the knock sensor wiring.