The engine runs poorly with no power when it is cold?

Tiny
SARAH NARVAEZ
  • MEMBER
  • 2007 CHEVROLET TRAILBLAZER
  • 100,000 MILES
My vehicle listed above, in the morning starts fast but does run bad after like 2 minutes. We do it three times and press the gas and it will run after the car is up to almost 210 temperature, then we drive it fine but by the next morning it’s doing the same thing.
Thursday, September 22nd, 2022 AT 6:16 AM

8 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
This happens when the engine coolant temperature sensor goes out, but we should run the codes first. here is the location of the sensor just in case you want to change it out. You can get a code scanner from Amazon for about $20.00.

Here is a guide/video to show you how:

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

Here is a scanner link:

https://amzn.to/3Qi1SS6

Check out the images (below). Please let us know what happens.
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Thursday, September 22nd, 2022 AT 10:29 AM
Tiny
SARAH NARVAEZ
  • MEMBER
  • 5 POSTS
Thanks. Okay, we have used the computer and we get p0132, p0030, p0315, and sometimes p0496.
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Thursday, September 22nd, 2022 AT 11:59 AM
Tiny
SARAH NARVAEZ
  • MEMBER
  • 5 POSTS
What tools are needed on the vehicle I have?
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Thursday, September 22nd, 2022 AT 12:26 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
These are oxygen sensor, crankshaft relearn sensor and EVAP sensor codes, how long has the check engine light been on and did these codes come up all at once?
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Friday, September 23rd, 2022 AT 11:53 AM
Tiny
SARAH NARVAEZ
  • MEMBER
  • 5 POSTS
Okay, we are putting a new crankshaft sensor today and no the po496 recently popped up.
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Friday, September 23rd, 2022 AT 12:02 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
Okay, once the sensor is in place clear the codes and let me know what happens.
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Saturday, September 24th, 2022 AT 10:07 AM
Tiny
SARAH NARVAEZ
  • MEMBER
  • 5 POSTS
Okay, crankshaft sensor is on still in morning sounds like it wants to cut off once it’s warm runs good. We have to replace the condenser it had a leak, but we put stop leak for the moment.
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Thursday, October 6th, 2022 AT 4:32 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
Okay, lets service the throttle bore which can cause the problem as well.

https://www.2carpros.com/articles/throttle-actuator-service

Please go over this guide and report back.
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Thursday, October 6th, 2022 AT 11:31 AM

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