Question about 2000 Saab 9-3 Viggen
P1312 is ignition coil knock detection cyl 1 and 2 and the cause is quoted as wiring open circuit/short to positive, ignition coil assy, ECM.
P1334 is as 1312, but cylinders 3 and 4.
The other thing to that would cause detonation too is low fuel octane causing detonation during acceleration. Or dirty fuel injector and dirty fuel filter. Timing would cause this but i don't think your timing is off since you can get it started. Recap, add fuel injector cleaner to your gas tank for the next 3 fill ups and try using a higher octane rated fuel like 91 and replace the fuel filter for now and see if there are any improvments. keep me posted, be glad to help.
Posted on Jun 25, 2009
Engine light on seems to be running fine what should i do?
Posted on Sep 04, 2010
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Posted on Jan 02, 2017
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