Failed emissions test due to 2 check engine codes P0174 a...


Failed emissions test due to 2 check engine codes P0174 and P0507. I know the codes, I just need to know the cheapest way to get them fixed Mechanic's Assistant: Okay, I'll connect you to the Mechanic to go over that infor...

Failed emissions test due to 2 check engine codes P0174 and P0507. I know the codes, I just need to know the cheapest way to get them fixed Mechanic's Assistant: Okay, I'll connect you to the Mechanic to go over that information regarding your car. Before I do, is there anything else you want him to know? On a very tight budget due to Covid, so just need t pass the test

Automotive Expert
Hi, my name is\*\*\*\*\*’ve been a technician on Just Answer since 2007 and I'll be helping you today. I'm sorry to hear you are having difficulties with your vehicle. I know how inconvenient car trouble is, but together, we will get your vehicle back up and running quickly. May I ask whom I am chatting with today?

My name is \*\*\*\*\* \*\*\*\*\* I am actually researching for my son Mike
Automotive Expert
Hi Karen, it's nice to meet you. Can you tell me the year, make mode and engine size of the car?

2007 Nissan Maxima. I think v8
Automotive Expert
Ok, that's good enough. Is the engine running rough or the idle speed fast that you know of?

idle is running fast.Engine seem fine otherwise
Automotive Expert
Ok This P0174 code is for what we call a lean fuel mixture. The computer is adding fuel to try and make it correct which s why the engine is running fast. The first thing to check is for any vacuum leaks, possibly a split hose or line that has come off, also have him check the large hose to the throttle body. If it's a hose it might be a fast and inexpensive repair. Have him check these and let me know. Thanks

we are to see if any of the hoses are loose, cracked or off? He just had an oil change, would of they said something if there was?
Automotive Expert
Not if they didn't notice, but also, if the fast idle wasn't an issue before the oil change, take a very close look at the air filter box and the tube to the throttle body.

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