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Old 10-27-2011, 10:53 AM   #6
MT-2500
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Re: Ignition timing jump when checking timing with light.

Quote:
Originally Posted by Wags391 View Post
The timing jumps in both modes. The ECM is up behind the glove box and the wire I disconnected is the brown (tan) and black one just below the dash (gives me a code when unplugging it). I know it's the correct wire. I do not have another timing light to use, unfortunately.
Is the timing mark pointer the same in normal mode and base mode?
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