Category Archives: Fuel System

P0171 & P0173

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Engine codes P0171 and P0173, a lean fuel system condition, the engine may miss fire or feel lazy. Modern cars and trucks have many sensors that send information to the engine computer. The engine computer looks at the information coming in from all the input sensors and then it makes changes to the, transmission operation, ignition timing and fuel injector delivery. The computer does this very fast, so fast most drivers will never feel the changes taking place.

The computer adjusts many outputs at the same time, every second.

The PCV hose pictured above, is for a 2009 Ford truck. The old hose went bad and caused two codes in the engine computer. P0171 and P0173 are codes for a lean condition inside the engine. The hose below failed, causing the codes to set in the engine computer.

When the C.E.L. (check engine light) comes on, it makes you wonder, is it critical or a minor issue. Plus now you have something new to fit into your budget, Great!

As long as your check engine light is not flashing at you, you can still drive your car, but should get it in for service as soon as possible. The light is on for a reason.

A lean condition can cause many issues. Fuel economy will become poor and the engine may even stall when coming to a stop. It will run rough when cold and lack power when warm. It needs attention, your ride is unhappy, and it’s time to make a repair.

Hose failure is the most common cause of a lean fuel system. Many parts on the engine can cause a lean code issue, so you should have a ASE certified shop look at your engine light issue. Free code checks at the auto parts store will not be 100%.

I use dealer parts often. In this case, the PCV hose has been updated. When ever I have a chance to make a repair that will solve more than one issue I do it. The hose was updated to prevent PCV carbon build up and the rubber hose joints are made thicker. The part was less than $30.00. An investment vs just using a regular chunk of hose, but it will last. At Tony’s service center every repair we do comes with a 2 year 24,000 mile warranty.

Stop in for a visit today.

It’s all good under the hood. Anthony Xavier ASE Master Technician

copyright: All rights reserved @ HeyAnthonyAZ.com 2013

 

Going to the dealer for repairs. Auto Repair 85016

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I have some clients that say this: I do not want to go to the dealer. 

Why?

The dealer has all the cool tools, great parts and factory trained mechanics. So why not go to the dealer. They know everything about the car you drive. It must be a great place.

I have worked in three dealerships. Everyone of them was challenging. Shop politics, back stabbing, steeling work from each other, breaking things to flag warranty time, high mechanic turn over and the list goes on. In short, it sucked.

Because I have morals, I never did very well at the dealership level. I did not play along with the shop games, politics and shady ways to flag time.

I did have an advantage, I could work on anything that rolled. I always had work when everyone else was standing around. In the long run I still made my pay check, but I did it the hard way, I worked for it.

I like working at a family owned repair shop.

Clients like the family owned repair shops because they get better overall service. A family shop is a great place to go for all your repair and maintenance needs. A family repair shop works on anything that rolls. Any year and model, we do not mind. A family owned shop can do everything the dealer can do. A family repair shop offers you a personal touch.

A family shop will always be a better place than the dealer, because we care about you.

It’s all good under the hood. Anthony Xavier ASE Master Technician

copyright: All rights reserved @ HeyAnthonyAZ.com 2013

Chevy Truck Repairs, My engine runs rough.

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1997 Chevrolet truck with a 4.3 engine runs rough.

The owner has maintained the truck very well, but with 300,000+ miles on the clock you would think it would be all worn out, but it’s not. This is why maintenance is critical to the long life of your car or truck. This truck looks and drives great because the owner loves his ride. The rough running condition was not setting any codes.

(This was a No Code, Driveablity Condition) 

It was not related to the ignition system or engine compression. It was caused by a faulty fuel pressure regulator on the fuel injection unit. The only way to spot an issue like this is to know fuel delivery basics.

The failure was not computer related.

Some engine parts go bad slowly over time. The client did not know that anything was wrong. The client only said it felt rough at an idle and to check it out. This little monster below is the fuel injection unit from under the intake manifold. It is hidden from sight. So when it has a leak, you do not smell it or see it, but your fuel economy will drop when it is going bad.

The client may have noticed that the engine was using more fuel, but he does not check the fuel mileage regularly. The easy way to check fuel usage is to zero out your trip meter when you fill up the gas tank. Then at the next fill up, divide the miles traveled by the fuel used to re-fill the tank. Presto, you just found out what your fuel MPG is. Now, do this at every fill up and if you notice your mileage drop over 20% suddenly, you may need repairs or lighter feet.

It’s all good under the hood. Anthony Xavier ASE Master Technician

copyright: All rights reserved @ HeyAnthonyAZ.com 2013