Question about 1999 Saab 9-5

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Saab 9-5 Aero Wagon 2000 wont restart when warm or after running

Our 2000 Saab 9-5 Wagon/Estate won't start after running/warm (after the engine has been turned off). The car will always start first thing in the morning ie. when cold. This in an intermittent problem that seems to bear no relation to the length or duration of the drive. Sometimes we have to wait 30 mins for a restart ... sometimes 2-3 hours. When it fails to start all the dash lights come on but there is no turning over of the starting motor or engine - just silence. Luckily we have a far more reliable '91 900i for backup. Our baffled mechanics have replaced the starter motor - seemed good for a couple of days but the car is now back to its old tricks.

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  • gerardlynch1 Mar 17, 2009

    Thanks one and all for your comments and ideas.

    As it turned out the problem lay in the Neutral Position of the Selector Switch which was faulty and when hot did not allow the car's ignition to operate.

    Cost over $800 Australian to fix.





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I have a 1999 Saab 9-5. I had a similiar problem. The car would always run cold. It would get hot and the engine would quit. It could be anywhere. One mile from start to 50 miles from start. Once it cooled down it would re-start but the cool down time was always different. Only difference for me was my car would crank, just not run. Replaced the crank position sensor ($60), no more problems! Good luck!

Posted on Mar 11, 2009

  • mark jones Nov 28, 2012

    My problem is very similar to NJSlobOwner,s but on a 93 2.0 turbo but my short term solution has always been if it cuts out bump start the f==ker, but it does hold up traffic when it does it an elecrical engineer friend of mine stated that it may be coil pack, but I may source a crank pos sensor first uless i can get a bit more clarity on peoples general solutions. markj


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The solution could lie in a few solutions, none of which are inexpensive. I had thismodel and it is a wonderful car albeit with it's few flaws. The problem may be with the neutral position sensor on the automatic transmission, where it won't start because it thinks it's not in park or neutral.---OR--- the tranponder key is not communicating with the electrical collar found in the outer ring of your key cylinder (this snaps in and out and is excusive to your vin#. saab quoted me one thousand dollars to purchases the entire cylinder assembly(must be coded back across the pond at factory). -OR- Your alarm system is malfunctioning and you need a new board or more cost effective wayreplacement of backup battery power on that board located in front left driver wheel well arch. p.s. Good luck finding these strange batteries. Good luck let us know how you make out!

Posted on Mar 15, 2009

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Ignition control module common problem

Posted on Mar 09, 2009

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