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sometimes runs ruff

424 views 0 replies 1 participant last post by  kurgan 
#1 ·
1986 saab 9000 turbo cold starts in winter of 30 or colder starts and idles fine but some times in the warmer weather 50 or more it starts and idles like crap for the first 30 seconds or so and clears up sometimes even stalls. it acts like it has a vacume leek. but it only does it about half the time. i thought it might be a problem with the computer runing in closed circiut but it checked out fine with the ohm meter. it is very strang i replaced aic motor checked vacume houses.just sometimes it starts up fine and sometimes it idels ruff, up and down almost staling then clears up i cant figure it out could it be o2 sensors or maf sensor ?
 
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