Cool Saab 900 Check Engine Light Ideas. Web 1 2 philb 2902 posts · joined 2005 #2 · mar 24, 2006 i don't think its the aic, or at least i don't think the aic is causing the bucking while driving along. Cel light on 900'i is often crank position sensor, if it flashes on and off, as had one play up on one a few years back then it died on me, but would fire up when cold but once warm it spluttered like a pig, replacement sorted it.
#2 · sep 19, 2007. Have had a dozen check engine warning code over the years on a saab 9000 cse (1998). Just recently had another false code.





