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I have 4 codes and my mechanics have done everything they…

Customer Question
Hi! I have 4...

Hi! I have 4 codes and my mechanics have done everything they can, they're unsure what's causing it. Their scanner says 121B, 3100, 3140,3150, 3130.

Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it?

Misfire cylinder 3, 5, 4, misfire at least one cylinfer and MAF sensor. It has to be reset a few times a day.

Mechanic's Assistant: What is the model/year of your Volvo?

2007 Volvo S60 2.5T AWD

Mechanic's Assistant: Are you fixing your S60 yourself? What have you tried so far?

I have a shop working on it, but they are stumbled what is wrong. They suggested to take it to Volvo, but Volvo charges $145 to diagnose. They've replaced spark plugs, MAF sensor, air intake pipe, pistons/valves

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I think that's everything. Thank you

Submitted: 8 months ago.Category: Volvo
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Answered in 22 minutes by:
12/13/2017
Volvo Mechanic: Cesar Jimenez,
 replied 8 months ago
Cesar Jimenez
Category: Volvo
Satisfied Customers: 182
Experience: shop foreman at carmona repair
Verified

hi im cesar jimenez and im here to assist you today. im reviewing your question now....

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Customer reply replied 8 months ago
Okay, thank you.
Volvo Mechanic: Cesar Jimenez,
 replied 8 months ago

the codes given are they P codes or B,U. ?

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Customer reply replied 8 months ago
The mechanic gave me these codes, he took a picture of his scanner and get them to me. I dont think their P since my little $20 scanner would show them as P with a different number.
Customer reply replied 8 months ago
The mechanic just texted me and said they're manufacturer codes.
Volvo Mechanic: Cesar Jimenez,
 replied 8 months ago

found it.

have you checked for vacuum leaks or intake manifold gasket leaks??

is engine oil level good??

corrosion or oxidation of MAF sensor plug??

contaminated fuel??

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Customer reply replied 8 months ago
I know they gassed it twice to check for leaks, back in September they replaced the head gasket since I had a oil leak that wore out my timing belt. They checked the oil Monday and it looked fine, I always use the same fuel (premium), the plug that goes into the MAF sensor didnt look corroded either
Customer reply replied 8 months ago
I filled my gas on Sunday but the issues were happening before that.
Volvo Mechanic: Cesar Jimenez,
 replied 8 months ago

are any of the injectors leaking vacuum??

also how does it idle??

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