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9000cd direct ignition drama?
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Posted by Rob [Email] (#1828) [Profile/Gallery] (more from Rob) on Tue, 29 Jul 2008 19:46:30 Share Post by Email
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hi I have a '92 saab 9000cd fuel injected 2.3

recently I have had problems with cold start..car would start ok but run rough like it was missing on one cylinder..then after it got warm about 20mins later the prob was gone when I restarted (having done some driving). I replaced all spark plugs, but prob still there. The car recently got hot a few times due to a heater hose leaking so I removed the direct ignition unit and found one of the bakelite plug caps cracked - i glued and taped this up but still no better.

After this I experimented in the mornings before start up by taking the direct ignition unit off the car and warming it i front of a heater, then puting it back on the car. I found there was no miss when I started the car then (just coincidence??). Anyway I did this maybe 5 or 6 times on different days but yesterday it didnt make any difference..veryyy rough - and today I drove 500m and the car died. won't start. Fuel supply is fine. I noticed that with the ignitio on there is a constant electrical clicking type of noise coming out of the direct ignition unit - is that normal? Also a friend put multimeters on the resistors(??) inside the direct ignition unit and found only 2 of them had any amp or volt activity..normal? Maybe the direct ignition unit got hot and was damaged? If thats the problem is it worth replacing with a used unit?

Any help guys?? Thanks in advance. Rob, Australia


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