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Transmission whining and loss of performance

Tiny
300HPQ45
  • MEMBER
  • 1994 INFINITI Q45
  • 161,000 MILES
Slow take off
hard shifting
no slipping
trans makes a whining noise
car struggles for power like the trans is draining the car
loss of power at 4000rpm and struggles to 6000rpm then takes a min to shift
Monday, September 12th, 2011 AT 4:26 AM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi again. I just read your response to the first post. If there is a warning light on, you need to have the computer scanned to identify where the problem is coming from. Many parts stores will do it for free. However, not all of them have a good enough scanner to read trans codes.
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Monday, September 12th, 2011 AT 4:31 AM
Tiny
300HPQ45
  • MEMBER
  • 11 POSTS
Sorry im new to using these car forums
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Monday, September 12th, 2011 AT 4:33 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
No problem! I thought it was regarding the same vehicle. My last response is what I recommend. There are so many sensors, solenoids. That can go bad, without scanning the computer, it becomes a guessing game. Therefore, have it scanned. It should point you to the problem.
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Monday, September 12th, 2011 AT 4:49 AM
Tiny
300HPQ45
  • MEMBER
  • 11 POSTS
No codes popped up
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Wednesday, September 14th, 2011 AT 5:44 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
If no codes came up, it needs to be driven / checked by a tech. Anything I would say from this point would be a guess.
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Wednesday, September 14th, 2011 AT 6:19 PM
Tiny
300HPQ45
  • MEMBER
  • 11 POSTS
Think the filter is clogged
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Wednesday, September 14th, 2011 AT 7:02 PM
Tiny
300HPQ45
  • MEMBER
  • 11 POSTS
Ok wat about blowing black smoke from tail pipe and like struggling for power running priemium gas
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Thursday, September 15th, 2011 AT 11:19 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Black smoke usually indicates a rich fuel mixture. Check to make sure the fuel pressure regulator is working properly.
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Friday, September 16th, 2011 AT 12:26 AM
Tiny
300HPQ45
  • MEMBER
  • 11 POSTS
Do you know where tht is located on the car and I'm getting extremely low mpgs like 5miles to the gallon
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Friday, September 16th, 2011 AT 12:50 AM

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