code p0742 and p0300

2001 CHEVROLET CAVALIER
105,000 MILES
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CMWHALEN84
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  • 1 POST
Driving at 65 mph car stutters as if gonna stall. Hard on acceleration and poor fuel economy. Check engine light and abs light came on while going at high rate of speed 65 on interstate. Turned off and came back on about a week later. Took to advanced auto and got code stating was a cylinder 1 misfire. He advised me to change sparkplugs. Changed oil, oil filter, air filter, and sparkplugs. Light turned off and came back on while driving 65 on interstate. I then took it to auto zone, got 2 codes this time.
P0300 cylinder misfire random cylinders
P0742 tcc stuck on. Tcc commanded off by the ecm. Tcc slip detected after off command.
I do have a power steering leak, clunking noises when I turn the wheel, and some very heavy stuttering. About these codes and my light I have no idea where to start. Im very tight on money so a mechanic im trying to avoid. Any advice??
May 30, 2013 at 8:59 PM
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HMAC300
  • ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
there are so many different things to cause a p300 that a mechanic has to look at it to drive and use scanner at same time. the 742 is a trans code and your torque converter clutch is probably gone as well as something in trans.
May 31, 2013 at 7:10 AM
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