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Losing power during deceleration

Tiny
RICHEMMA2011
  • MEMBER
  • 2004 TOYOTA LANDCRUISER
  • V12
  • TURBO
  • 4WD
  • AUTOMATIC
  • 186,000 MILES
My vehicle listed above, which I changed from manual to automatic transmission, has a problem when driving at a speed you won't find this problem. But when slow down driving especially in town because of traffic it tend to lose power and check engine light turn on, if switch off for two minutes and start again the check engine light turned off and the car start performing better again, it can happen for three to four times if driving a day. Please assist what is wrong with my car as two mechanics had already failed to fix it.
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Thursday, April 1st, 2021 AT 11:50 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Couple things. Here is a guide that will help with loss of power:

https://youtu.be/U1RoG3I-Oww

However, we need to start with what codes this is setting when the engine light turns on.

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

Once we know what codes are there we will have a better idea. Also, did this just start after changing the unit to an auto transmission? Where did you get the unit from? Was it a new or used unit?

Thanks
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Saturday, April 3rd, 2021 AT 7:50 AM

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