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No engine power or performance in high gear

Tiny
LANNYT1957
  • MEMBER
  • 1995 TOYOTA 4RUNNER
  • 3.0L
  • V6
  • 2WD
  • 160,000 MILES
I have a problem with no power and no acceleration in high gear. It will not get above 2000 rpm's. I tried to do adjustment MAF. I also changed fuel filter and the problem got worse.
I do not know if this has anything do with MAF but the transmission will not downshift. I can pull the shifter into low and up shift fine no slip or any problems, but when I stop it stays in high gear until I manually shift it to low. Once I start to move I can put the shifter in drive and shifts fine if I can get rpm's up. Please help.
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Friday, December 23rd, 2016 AT 8:56 PM

5 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Have a transmission professional check this. It may be a roller clutch in the transmission is bad which is why you can shift from low to other gears because it is a different application.
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Saturday, December 24th, 2016 AT 5:47 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,787 POSTS
FROM LANNYT1957

Help guys have replaced mas and tps still same problem Please help ASAP
thanks.
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Friday, December 30th, 2016 AT 3:40 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,787 POSTS
Hey LANNYT1957,

Is the speedometer working? It could be a vehicle speed sensor that has gone out.

Please let me know

Best, Ken
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Friday, December 30th, 2016 AT 3:44 PM
Tiny
LANNYT1957
  • MEMBER
  • 2 POSTS
Yes the Speedo is working it's more of a performance problem than trans.I have replaced ma's and the tos even took cat. Converter loose still runs like crap just don't know on this one
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Friday, December 30th, 2016 AT 5:00 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
First thing is to quit changing parts using shotgun approach to fix your car. Until you scan for codes you don't know what is wrong. That is why I said to go to a trans pro. He can scan it and see if it's a tcm or wiring issue. This can also be a torque converter clutch not disengaging. Or it's a valve body problem like one sticking
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Saturday, December 31st, 2016 AT 6:17 AM

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