Transmission does not go into gear after car has warmed up

2002 HONDA CIVIC
192,611 MILES • 4 CYL • 2WD • AUTOMATIC
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KEVIN913
  • MEMBER
  • 2 POSTS
After first starting the car it shifts fine. But after approximately 10 minutes or after the car reaches normal temperature, the car doesn't go into gear! It just completely disengages from the gear and just sits there and revs. It started after replacing the head-gasket. Had to tow it home and it hasn't left the driveway since. After doing research I've found that it could be a speed shaft sensor, transmission solenoid, or a couple other things... Any Information would help a lot!
Feb 8, 2020 at 3:35 PM
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TOUGHDIVER
  • ✓ASE Certified Mechanic
  • 226 POSTS
  • ASE Certified Mechanic
Hello,

It could be a ground wire that was not connected or tighten during the head gasket replacement. Ground G101 would have been removed check it and all other wire connectors and grounds. I attached ground location and wiring diagrams showing the ground connection below. Repair ground and reset the control module by disconnecting battery cables for 10 minutes.
Let us know if this was helpful and if you need more information.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Thank you
Joe T.

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Feb 8, 2020 at 5:50 PM
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TOUGHDIVER
  • ✓ASE Certified Mechanic
  • 226 POSTS
  • ASE Certified Mechanic
Hello,

It could be a ground wire that was not connected or tighten during the head gasket replacement. Ground G101 would have been removed check it and all other wire connectors and grounds. I attached ground location and wiring diagrams showing the ground connection below. Repair ground and reset the control module by disconnecting battery cables for 10 minutes.
Let us know if this was helpful and if you need more information.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Thank you
Joe T.

Feb 8, 2020 at 5:50 PM
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KEVIN913
  • MEMBER
  • 2 POSTS
DuffDiver, I know nothing when it comes to vehicles so all information is most greatly appreciated!!
Feb 10, 2020 at 5:38 AM
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TOUGHDIVER
  • ✓ASE Certified Mechanic
  • 226 POSTS
  • ASE Certified Mechanic
Hello,

Thank you, Do you need more information to fix your car. Let us know we are always here when you need us. Thanks for choosing 2CarPros.

Thanks again.
Joe T.
Feb 11, 2020 at 11:39 AM
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