Engine stalls when at idle?

Tiny
LEGITIMATE007
  • EXPERT
Have you replaced the idle air control valve and done a throttle body cleaning, and throttle position sensor?
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
RIVERMIKERAT
  • EXPERT
See attached image of fuel pressure specs.
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
LEGITIMATE007
  • EXPERT
Check mass airflow sensor too, it really sounds like its not getting air, so yes clean the throttle body, check idle air control valve, airfilter and breather, pcv valve
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
JAGFIX
  • MEMBER
Ok. Thanks again. I checked the fuel filter, a little dirty but not bad. With a listening device on the fuel tank, you can hear the pump start making weird noises right before it quits running and stalls out the engine. The battery power to the pump remains constant as does the ground, so it's looking like a fuel pump is needed. Do you guys recommend a fuel pump only or the whole drop in assembly? The parts stores are asking about a harness code? Where do I locate it? I examined the harness but no tags could be found? There are a few different ones for this truck, not sure which one to get.
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
NOVACLONE
  • MEMBER
After checking the idle air control valve again, I realized it was not working and oddly enough I just put it in just over a year ago. I put in a new one and presto, back to new, thanks for your help. Gary Brooks.
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
RIVERMIKERAT
  • EXPERT
The whole drop in assembly usually includes the fuel level sending unit and float, along with the filter sock. If the gauge isn't acting up, I would go with just the pump. I couldn't find anything about a harness code, so either take a picture of the connector, or take the old pump in.
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
LEGITIMATE007
  • EXPERT
Awesome, keep in touch Gary
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
JAGFIX
  • MEMBER
Ok guys, I got the whole drop in fuel pump assembly installed and appears to be running fine. I installed the pump on Sunday and still runs good. Thanks to everyone for the help, time and knowledge. I appreciate it.
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
RASMATAZ
  • EXPERT
You're welcomed and Merry Christmas
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
95CHEVYBLAZER4.3DS
  • MEMBER
I have a 1995 Chevrolet Blazer 4x4. My issues is; when I turn the key it fires and stalls right away. If I give it a lot of gas it will run a little bit and it sounds like it's misfiring horribly and then it will turn off a few seconds later. Two months ago I replaced the fuel spider the two incoming lines that go through the throttle body the fuel filter the entire fuel pump and assembly. A week ago I changed the oil everything was fine drove it to work three days later and on the way home from work the next day it started what seemed like a horrible misfire although I was able to make it home. Now when I turn the key it sputters and shuts off. Fuel pressure is between 58 and 61.
EGR was pulled out and clean.
Plugs are 2 months old org acdelco plugs.
No codes on the dash.
Can't get it to run to really check for other issues.
Please help. I can't imagine a fuel pump only lasting two months. I see some people mentioned some type of security system and some type of yellow wire in the dash underneath the steering column.
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Friday, January 29th, 2021 AT 11:01 AM (Merged)
Tiny
KEN L
  • ADMIN
This sounds like a fuel pump or the crankshaft angle sensor has gone out. When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back. Let us know what happens and please upload pictures or videos of the problem.
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Friday, January 29th, 2021 AT 11:01 AM (Merged)

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