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Lumina LTZ 2003 Check Engine over 100km/h

Imran.bhatti

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Nov 2, 2015
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Hi everyone, i have Lumina LTZ 2003 with 197000 odo. i'm the third owner, i bought it second hand. the person already told me it give check engine sign sometimes and solution is just turn off ignition n turn it on again, and it would be fine. ok it was bearable in city. but i tested on highway, check engine sign come out as i drive over 100 km/h for just 5 mins, i kept driving, heat was stable, engine sound was same, only just automatic transmission take 3 seconds longer to shift. what should i do plz help me???
 

diysv6

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Can you get a scan tool on the car and see what DTCs are present or logged?

You may be able to isolate the source of the problem and then follow it up.
 
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