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When itswitchs to 4 cyl mode there is a popping and the AFM…

Customer Question
When itswitchs to 4...

When itswitchs to 4 cyl mode there is a popping and the AFM doesn't seem to be working correctly

Mechanic's Assistant: Where exactly do you think the noise is coming from? And how long has this been going on?

Yesterday oil pressure dropped so and AFM started acting up

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

Like shut engine off oil pressure drop. Replaced sending unit and oil pressure ho

Mechanic's Assistant: What year is your Chevy?

Hold for 30 min then low again but AFM only kicks in on hwy and intermittently makes pop makes truck shake a little you can ear it in exhaust 2008 silverado

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

Vmax

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

6.0

Submitted: 7 months ago.Category: Chevy
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Customer reply replied 7 months ago
Took off to get on highway was on it a little and then oil pressure light came on and I pulled over checked oil was okay restarted and was okay pressure did it 2 more times on way to work so on way home I replaced sending unit. The AFM started acting up same time. Oil pressure more steady but did drop to around 10 psi today with new sending unit. AFM only kicks on at hwy speed and intermittent. Some times it pops and the truck Lurch's when its shifting to 4 cyl
Answered in 4 hours by:
11/28/2017
Chevy Mechanic: Dan, ASE Certified Technician replied 7 months ago
Dan
Dan, ASE Certified Technician
Category: Chevy
Satisfied Customers: 2,111
Experience: Auto Technician
Verified

Hello my name is***** am an ASE Master Technician and I am glad to help you. I am reviewing your question now, and will reply shortly.

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Chevy Mechanic: Dan, ASE Certified Technician replied 7 months ago

Have you checked for any codes?

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Chevy Mechanic: Dan, ASE Certified Technician replied 7 months ago

Are you able to check oil pressure with a mechanical gauge? Do you have a scan tool that is able to read live data?

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Customer reply replied 7 months ago
No codes and changed oil n haven't had an issue... Time for AFM delete
Chevy Mechanic: Dan, ASE Certified Technician replied 7 months ago

I agree. The cost will be too great to try to get the AFM working again.

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Chevy Mechanic: Dan, ASE Certified Technician replied 7 months ago

Please let me know if you have any more questions.
Customer satisfaction is my number one goal. Giving me nothing less than a 5 star rating would be appreciated very much. You can do this rating at the box on the upper right hand corner. This will not close our chat session and at no extra charge we will still be able to talk about any other issues you may have for free! Providing a rating is the only way I will receive credit for my work with you. Negative ratings do not result in a refund so If you’re not satisfied with the work we have done so far please respond more and let’s get your question figured out

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