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Working on a 2007 Chevy trailblazer 4.2 L engine. Pulling…

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Working on a 2007 Chevy...
Working on a 2007 Chevy trailblazer 4.2 L engine. Pulling codes P2119, P300 , P0495 and P0455. Engine light just came on with these codes. We replaced the engine a while ago in the vehicle has been sitting for a while now
Submitted: 7 months ago.Category: Chevy
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Answered in 11 minutes by:
9/26/2017
Chevy Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 7 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Chevy
Satisfied Customers: 5,333
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles A6 - Electrical / Electronic systems A7 Heating / Air Conditioning systems
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Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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Chevy Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 7 months ago

Hey how are you

we have a Misfire issue P0300 , P2119 ,Throttle body issue , P0455 evap (emission related ) and p0495 is fan issue .

now ,make sure you have a good 12 volts on battery and these fault codes are not fake codes caused by that if it has been sitting , I sent you the troubleshoot and most possible causes on these issue

Start the trouble shoot with P0300 then clear fault codes and see what comes back .

these vehicles also are known about needing a TB Throttle body and looses it syn with car and it goes in limp mode

You are very welcome :)

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Customer reply replied 7 months ago
Please open this thread up to another technician. You and I have worked together in the past and we are not a good fit. Thank you
Chevy Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 7 months ago

yes no worries will do

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Chevy Mechanic: Dan, Technician replied 7 months ago
Dan
Dan, Technician
Category: Chevy
Satisfied Customers: 25,772
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Hello, my name is***** the check engine light flash while driving around?

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Customer reply replied 7 months ago
No it does not. It appears to drive fine and seems normal. I might feel the engine shaking a tiny bit, but It is not flashing, and seems to be running fine. the light has not been on while idling in parking lot for testing, but I just drove it a few miles and the light came on.
Chevy Mechanic: Dan, Technician replied 7 months ago

It sounds like you may have a few problems. P0300 is a random misfire which can be caused by just about anything. P2119 sets when the ECM determined that the throttle valve did not return to the rest position within 720 milliseconds. This could be caused by a dirty throttle body or a failing throttle body. Clean out throttle body with cleaner, spray onto rag then wipe out throttle bore and throttle plate, this may also be the cause of he P0300. P0495 usually means the cooling fan clutch is locked up, with vehicle off and engine cooled down check to see if you can easily spin the fan if not fan/clutch needs to be replaced. P0455 means evap system has a leak which is usually caused by gas cap, purge solenoid, or vent solenoid and in that order. Let me know if you have more questions, thanks.

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Category: Chevy
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