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?
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Wednesday, September 11th, 2019 AT 3:22 AM

11 Replies

Tiny
ASEMASTER6371
  • EXPERT
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
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
ASEMASTER6371
  • EXPERT
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
479 903 8916
  • MEMBER
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
Also can here the pump mmmmthen stop
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Sunday, September 15th, 2019 AT 2:43 AM
Tiny
479 903 8916
  • MEMBER
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
ASEMASTER6371
  • EXPERT
OK, 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
  • MEMBER
Ok I will have to get one
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Sunday, September 15th, 2019 AT 5:37 PM
Tiny
ASEMASTER6371
  • EXPERT
Keep us updated

Roy
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Sunday, September 15th, 2019 AT 6:09 PM
Tiny
479 903 8916
  • MEMBER
So I need a niod light to test ECM?
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Monday, September 16th, 2019 AT 7:41 PM
Tiny
ASEMASTER6371
  • EXPERT
As I stated yes

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

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