emission light is on and the vehicle has an erratic speedometer when decelerating and down shifts hard.
Apr 1, 2010 at 9:07 PM
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JACOBANDNICKOLAS
✓ASE Certified Mechanic
110,194 POSTS
Have you had the computer scanned? As far as the speedo, it sounds like an issue with a vehicle speed sensor. However, I have seen the throttle position sensor cause ids a bad ISC Have you checked that?
Oct 21, 2010 at 9:03 AM
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