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Will not stay running

Tiny
479 903 8916
  • MEMBER
  • 1990 CHEVROLET LUMINA
  • 3.1L
  • V6
  • 2WD
  • AUTOMATIC
  • 57,905 MILES
How do I clean EGR valve and intake air?
Wednesday, September 11th, 2019 AT 3:22 AM

11 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

You need to remove the valve and look underneath. Make sure the valve is closed. It is common for carbon to unseat the pindle creating a massive vacuum leak.

https://www.2carpros.com/articles/stall-at-idle

Please explain the intake air?

Roy

Roy
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Wednesday, September 11th, 2019 AT 3:34 AM
Tiny
479 903 8916
  • MEMBER
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When my wife is turning car over I spray carburetor clean in intake and car runs soon as I stop so does car not sure what is wrong with car. No codes.
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Friday, September 13th, 2019 AT 2:28 AM
Tiny
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  • MECHANIC
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Okay, you have a fuel delivery issue.

Can you hear the fuel pump run with the key on?

You need to check the actual fuel pressure first to see if the pump is working.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Roy
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Friday, September 13th, 2019 AT 3:40 AM
Tiny
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Yes pressure is 45 lbs checked with gauge.
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Sunday, September 15th, 2019 AT 2:39 AM
Tiny
479 903 8916
  • MEMBER
  • 9 POSTS
Also can here the pump then stop.
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Sunday, September 15th, 2019 AT 2:43 AM
Tiny
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  • MEMBER
  • 9 POSTS
I have replaced TPS, fuel pressure regulator , cai, PCV valve, several o-rings, fuel filter. Car has very low mileage and I don't understand what happened. We drove the car 45 miles to get it home. Also new battery.
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Sunday, September 15th, 2019 AT 2:49 AM
Tiny
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Okay, you need to test and see if the ECM is commanding the injectors to fire.

You need a noid light, you can get it at a parts store, and see if it flashes while cranking.

It may be a bad ECM.

Roy
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Sunday, September 15th, 2019 AT 7:14 AM
Tiny
479 903 8916
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Okay, I will have to get one.
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Sunday, September 15th, 2019 AT 5:37 PM
Tiny
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  • MECHANIC
  • 52,797 POSTS
Keep us updated.

Roy
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Sunday, September 15th, 2019 AT 6:09 PM
Tiny
479 903 8916
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So I need a niod light to test ECM?
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Monday, September 16th, 2019 AT 7:41 PM
Tiny
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As I stated yes.

Roy
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Monday, September 16th, 2019 AT 9:49 PM

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