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Drfatz

Freescan shows spark all over the place

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I have been slowly sorting out things on my 90 SE because my engine has been running poorly since I got it running several months ago. Well I just took a freescan log of me running the car at idle and blipping the throttle now and then and the "Spark" column on free scan is all over the place. Even with the car sitting at constant idle I see the spark go from ~9 to ~14 and then to 0 for a bit and then to ~13-14 for awhile then jump to zero and then jump to 22.5 for a bit. Does this mean my coils are on the out? They are about the only part of this car I have yet to replace!

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