Question about 1997 GMC Sonoma
Slow starting even back fires at times when trying to start. Have recently replaced battery, and starter, and alternator has been checked. Also can you tell me how to adjust timming? was backing up in my 1997 sonoma and my anti lock light came on.It stayed on for like thirty min. and when I turned my car off than restarted it the light went off. I drove home from out of town about 182 miles and it has not come on again.
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Long start time and misfires can be caused by retarded
engine time. Purchase a timing light and check your engine time against the
front pulley and the timing scale located around your timing chain cover. If you have
recently had your timing belt or chain replaced you could be a tooth off.
With regard to your ABS light the easiest thing to check or replace is the speed sensor on the wheel. Because this is a magnetic pick-up sensor and due to the location (on the wheel behind the rotor) can be susceptible to corrosion. That is also the most common cause of an illuminated ABS light. Do you have 4 or 2 wheel anti lock? The 4 wheel abs doesn't change what could be wrong, it just means you have more speed sensors to check.
Posted on Feb 22, 2009
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