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Car has no power

Tiny
ME.CAPRICE
  • MEMBER
  • 2006 CHEVROLET CAPRICE
  • V6
  • FWD
  • AUTOMATIC
  • 255,555 MILES
I press the accelerator but rpm does not goes beyond 3000. Even when I press the power shift it does not move.
i asked one local mechanic to check with diagnostic computer he told me the error was P0717 input/turbine speed sensor a circuit no signal.
also, there is check power train error whenever I start the engine.
kindly help me what is the problem and how to rectify it.
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Tuesday, May 23rd, 2017 AT 3:32 AM

14 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It means that a signal is not being sent to TCM/PCM so will not shift right. The sensor could be bad or disconnected or poor contact. See picture, it is marked 440 in picture. Other one marked 10 is vehicle speed sensor.
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Tuesday, May 23rd, 2017 AT 5:54 AM
Tiny
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Thankyou for your kind reply!
Is the tcm module is located inside the gearbox?
Because it is hard to find a good mechanic of chevy gearbox
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Tuesday, May 30th, 2017 AT 6:53 PM
Tiny
HMAC300
  • MECHANIC
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Its' under the air cleaner if this is a 3.4L it should be scanned for codes first to see if the tcm is the problem or not it may be a shorted wire etc or what I said in previous reply.
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Wednesday, May 31st, 2017 AT 6:31 AM
Tiny
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Thanks man but I think thats the only code that showed up P0717
As I told earlier but I will check once again and update you for more advices!
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Wednesday, May 31st, 2017 AT 3:32 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Please let us know what happens, we are interested to see what it is.

Cheers, Ken
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Saturday, June 3rd, 2017 AT 12:09 PM
Tiny
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I went to workshop area and when they scanned the whole car there were few codes which appeared in the diagnostic computer i.E. P700, P2190 & P2188 but not P0717 as last time. They asked that they have to open the gearbox as there is a problem there but I thought I should consult with you guys first.
Any suggestions?
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Sunday, June 11th, 2017 AT 7:28 PM
Tiny
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All of the codes that showed up were
P2188
P0700
P2190
P0304
p0532
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Sunday, June 11th, 2017 AT 10:44 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
2188 &90 are fuel correction codes because you have a misfire on cyl 4 (304) those will probably go away the other one is a/c problem of to low a voltage
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Monday, June 12th, 2017 AT 5:04 AM
Tiny
ME.CAPRICE
  • MEMBER
  • 10 POSTS
Mechanics here are not able to diagnose the problem please can you show me a picture of TCm/Pcm it would mean alot if with exact location I really appreciate your help
As per I understand this is more like an electrical work rather than mechanical right? So should I go for car electrician?
What about the price of the module?
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Saturday, June 17th, 2017 AT 7:58 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Mosudles can be bought new or rebuilt but have to be programmed to your car. A mechanic with a pro scanner should be able to fix this. It may not be the pcm also check battery for condition as a low batter will throw multiple codes. Both tcm and pcm are inside air cleaner double arrow in pic is tcm
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Saturday, June 17th, 2017 AT 12:11 PM
Tiny
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It can't be battery as I changed it like few months back I will check with the mechanic and get back to you
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Saturday, June 17th, 2017 AT 11:05 PM
Tiny
HMAC300
  • MECHANIC
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The biggest thing is you have a misfire and that needs to be fixed as a lot of this stuff will straighten out once you do.
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Sunday, June 18th, 2017 AT 7:40 AM
Tiny
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Yup I already did that, 4th sparkplug was kind black like burned, after changing the accelaration got a little bit better.
But still rpm isn't going up I hope its doesnt causes more problems in the car
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Sunday, June 18th, 2017 AT 7:49 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Hello,

If I can suggest it sounds like you have a plugged catalytic converter, here is a a couple of guides to help you find out the problem and get it fixed.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

and

https://www.2carpros.com/articles/engine-has-low-power-output

Please let us know what happens, we are interested to see what it is.

Cheers, Ken

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Monday, June 19th, 2017 AT 10:00 AM

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