Chevy / GM P0171 or P0174 System To Lean Bank 1 Bank 2

I’m going to go over some common issues causing the P0171 and P0174 error codes in Chevy and GM vehicles, indicating a system too lean in both Bank 1 and Bank 2.

Under standing fuel trim numbers can aid greatly in get to the source of the problem. We start by conducting a smoke test on the intake to detect any leaks. Next, we assess the condition and performance of the mass air flow sensor and fuel pressure test to ensure they meet specifications.

Further inspections include the PCV valve and the brake booster, along with other critical components like fuel pressure regulator, that could lead to a lean-running engine.

Whether you’re a DIY enthusiast looking to understand more about your vehicle or a professional mechanic honing your skills, this video provides step-by-step guidance on diagnosing and fixing lean engine problems and understanding fuel trim reading on a scanner.

#ChevyRepair#LeanBank1Bank2#AutoRepair#CarMaintenance#DIYMechanic#P0171#P0174#FlatRateMechanic

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How to Diagnose 2013 Hyundai Elantra No Crank No Start – Starter?

Hyundai Elantra No Crank No Start

In this video I will show you how to diagnose Hyundai that will not crank over and will not start. On this vehicle it is very hard to access the starter for testing. so I will show you some easy test you can do to determine if it is a starter with out wasting a lot of time, using a scan tool.

How to Fix P0101 Mass or Volume Air Flow “Nissan Altima” Mass Air Flow Sensor Fixed

In this video, I will show you how to fix p0101 mass air flow sensor circuit. We’re working on a 2011 Nissan Altima and in this video, I just wanted to go over a few things we found. First, we tried cleaning the mass air flow sensor which in a lot of cases can help and is always a good thing to try before replacing the mass air flow sensor.

If you need to know how to clean the mass air flow sensor they do sell mass air flow sensor cleaner here https://amzn.to/3yef3wP . Sometimes just this alone will fix a p0101 On this vehicle, we actually had to replace the mass air flow sensor and also there’s a service bulletin that states a computer should be updated with new software to prevent this problem from happening. We deliver all this information in this video about Nissan’s mass air flow problems.

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For Promotional offers, consulting, training, sponsorships or other inquiries contact me at FlatRateMechanic1@gmail.com The Flat Rate Mechanic. 26-year ASE Master Automotive Technician and Advanced level ASE certified here to help you save money on your automotive repairs The Flat Rate Mechanic is a participant in the Amazon Influencer Program.

Disclaimer: Due to factors beyond the control of The Flat Rate Mechanic, it cannot guarantee against unauthorized modifications of this information or improper use of this information. The Flat Rate Mechanic assumes no liability for property damage or injury incurred as a result of any of the information contained in this automotive repair video. The Flat Rate Mechanic recommends safe practices when working on cars or trucks with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this repair video. Due to factors beyond the control of The Flat Rate Mechanic, no information contained in this automotive repair video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or the information contained.

P0442 P0445 P0456 EVAP Leak Jeep “Common Problem”

P0442-P0445-P0456-EVAP-Leak-Jeep

In this video will be diagnosing an EVAP system leak on a Jeep Wrangler. p0442 small evap leak, P0445 indicates that there is improper purge flow, EVAP System – Small Leak. One of the most common trouble codes with the Jeep Wrangler is the P0456 code. This trouble code references a number that is given to you when you plug your Wrangler into a OBDII scanner. P0456 Indicates that there is a small leak in the evaporative emission control system.

We did not find any evap leaks in this system and determined the leak detection pump was bad. You can find them on Amazon here:
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P0442 P0445 P0456 EVAP Leak Jeep “Common Problem

VW TDI P0301 Cylinder 1 Misfire “Bad Camshaft”

VW-TDI-P0301-Cylinder-1-Misfire

In this video, we are working on a 2004 VW TDI with a cylinder 1 misfire and it has a check engine light on with a stored code P0301 P0302 P0304 P0305. After diagnosing the car and removing the valve cover we found the cylinder 1 camshaft lobe was completely worn done and the camshaft follower was almost worn through.

Also after further inspection, we found that all the camshaft bearing was bad.

After replacing the camshaft, bearing, and cam followers the misfire was gone a VW was running well again.

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How to Confirm Your Repair P0171 P0174 System Lean

How to Confirm Your Repair P0171 P0174 System Lean

In this video, I will be going over how to confirm you’re repair after diagnosing a p0171 or a p0174 system lean bank 1 and system Lean Bank 2. And this video will be repairing a vacuum leak and monitoring fuel trim values to verify that the repair was successful using fuel trim values on a scan tool. Just a brief overview of fuel trim used to verify a repair.

How to use fuel trim to make sure you car is fixed after the repair!

You fuel trim numbers should always stay around 0% and if they are adding fuel that would mean your engine is running lean. If your fuel trim is taking away the fuel that means your engine is running rich. #systemlean #p0171 #p0174

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Most Common Cause of a P0101 “Mass Air Flow (MAF) Circuit/Performance Malfunction”

Most Common Cause of a P0101

Most common cause of a p0101 “Mass Air Flow (MAF) Circuit/Performance Malfunction”?
Code P0101 Definition
Mass Air Flow (MAF) Circuit/Performance Malfunction

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Code P0101 Meaning
The mass air flow (MAF) sensor measures the amount of air entering the engine. Check engine light code P0101 is set when the measurement of air entering the engine by the mass air flow sensor is outside of the manufacturer’s specified range.

Symptoms
Engine stalling
Difficulty starting
Lack of power
Rough idle
Causes
Dirty, obstructed, or faulty mass air flow sensor
Damaged or disconnected air intake boot (snorkel)
Vacuum leak
Clogged or improperly installed the air filter
Clogged catalytic converter / restricted exhaust

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P0455 Large EVAP Leak Explained “No Smoke”

P0455 Large EVAP Leak Explained

In this video, I go into detail on why a p0445 large evap system leak sets and hoe the gas vapor system works and why it will set a p0455.

There are a number of different reasons that could cause a p0455 and the #1 reason being the evap vent valve and they are pretty easy to test. In this video, I will be testing the vent valve and the
evap purge valve with a power probe http://amzn.to/2FN2r70

I will active them with the power probe then blow into them to make sure they are sealing properly. And if they don’t that will be the cause of your large EVAP leak. The vent valve is very common and I hope this video helps a few people save a little money on their auto repair bills. Thanks for watching the Fate Rate Mechanic.

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