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Automatic transmission shift problem

Tiny
JADDUN
  • MEMBER
  • 2001 MITSUBISHI SPACE WAGON
  • 1.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 233,333 MILES
This car's engine was replaced with a 2000 Mitsubishi gallant engine and now the automatic transmission keeps reviving up once it is in gear three before engaging and revs up at exactly 50 km/hour then same thing when slowing down too.
Saturday, September 24th, 2016 AT 6:17 PM

10 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes first see if there is an electrical problem.
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Sunday, September 25th, 2016 AT 8:25 AM
Tiny
RENEE L
  • ADMIN
  • 1,257 POSTS
Hello JADDUN,

If you decide you would like to conduct the scan yourself here is a link to an article that features written step by step instructions and pictures explaining how to do the scan yourself, also I have included a link to our YouTube channel with a how to video on code scanning. Most scanners are inexpensive to purchase, you can purchase one online from sites like Amazon.com

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://youtu.be/YV3TRZwer8k

Once you have the codes please get back to us so that we can further assist you. We are always happy to help.

Thank you for visiting 2CarPros.com.

Kindest regards,

Renee
Admin
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Sunday, September 25th, 2016 AT 4:49 PM
Tiny
JADDUN
  • MEMBER
  • 26 POSTS
Hi, was able to retrieve these codes : 12- throttle position sensor system; 13; 14- acc pedal position sensor system; 21; 23; 25; 56; 79; 78; 77; 91.
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Monday, September 26th, 2016 AT 2:54 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
We do not have those number codes for that year so you must be not In USA with that many codes check battery for condition including load test as they may be false codes due to a weak battery.
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Monday, September 26th, 2016 AT 3:31 PM
Tiny
JADDUN
  • MEMBER
  • 26 POSTS
Ok its: accelerator pedal position sensor system open circuit; crank angle sensor system; oo
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Friday, September 30th, 2016 AT 12:30 PM
Tiny
JADDUN
  • MEMBER
  • 26 POSTS
Output shaft speed sensor system; wide open throttle switch system; n range lamp system;
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Friday, September 30th, 2016 AT 12:35 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Please clear the codes and then drive it for a short time and regather codes, we are just trying to get the most prevalent codes first. This will help narrow the problem down.

Please let us know what you find so it will help others.

Best, Ken
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Saturday, October 1st, 2016 AT 10:37 AM
Tiny
JADDUN
  • MEMBER
  • 26 POSTS
Same codes reappear or maybe it refused to clear. But I read in the manual that if the output shaft speed sensor is recorded 4 times it goes into a fail safe mode @ gear 3. So maybe that's what has happened. Just maybe
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Sunday, October 2nd, 2016 AT 10:39 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Then try to replace it or check for wiring shorting out. But with your miles i'd think it would be more of a clutch pak bad and trans slipping
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Sunday, October 2nd, 2016 AT 11:38 AM

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