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08-06-2019, 01:00 AM
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#1 |
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Registered User
Join Date: Jun 2016
Location: Phoenix AZ
Posts: 429
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engine cuts out but doesn't turn off
Any idea why this happens?
It won't start unless I use starter fluid. It runs after that. It'll cut out then keep running consistently. |
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08-06-2019, 01:05 AM
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#2 |
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Registered User
Join Date: Jun 2016
Location: Phoenix AZ
Posts: 429
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Re: engine cuts out but doesn't turn off
Here is a youtube link to the vid. You can hear it cut out twice before I disconnect power. I didn't want to run it too long since I don't have a radiator hooked up yet.
https://youtu.be/tydswaR2Wic |
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08-06-2019, 03:01 AM
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#3 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,118
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Re: engine cuts out but doesn't turn off
What are you using for fuel delivery? Is the pressure 58psi? Also, you should take the belt off of it when running it on the garage floor like that, the water pump and power steering pumps dont like to be run dry, not to mention the fan is a hazard.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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08-06-2019, 03:24 AM
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#4 |
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Registered User
Join Date: Jun 2016
Location: Phoenix AZ
Posts: 429
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Good points. I have a fuel pump connected ac Delco EP381 sitting in fuel tank with sender.
I will check fuel pressure tomorrow. Something I’m not sure of is whether I have the flex fuel injectors and if that matters. Posted via Mobile Device |
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08-06-2019, 04:00 AM
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#5 |
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Registered User
Join Date: Jun 2016
Location: Phoenix AZ
Posts: 429
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Re: engine cuts out but doesn't turn off
I'm now pretty sure I have the flex fuel injectors. It has the uscar connector.
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08-06-2019, 04:45 AM
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#6 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,118
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Re: engine cuts out but doesn't turn off
Not sure how you have it wired at the moment, but does the fuel pump prime when you put power to the main ignition relay?
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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08-06-2019, 04:00 PM
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#7 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,614
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Re: engine cuts out but doesn't turn off
( I have seen videos on the line that show an engine starting, running and idling fine with out the maf. )
dont believe everything you see on youtube.... thats risky trying to start a engine like that...and yes i know its been done before...just saying its risky
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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08-06-2019, 04:31 PM
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#8 |
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Senior Member
Join Date: Jun 2015
Location: Atlanta, GA.
Posts: 737
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Re: engine cuts out but doesn't turn off
I would ditch the fan and tape the MAF to the Throttle body. Costs nothing but time and some tape.
__________________
Jay Gesner Atlanta, GA 1985 C10 Long Bed 4X2 LS 5.3, 4L60E Father/Daughter Project |
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08-06-2019, 06:06 PM
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#9 |
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Registered User
Join Date: Jun 2016
Location: Phoenix AZ
Posts: 429
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Re: engine cuts out but doesn't turn off
Removed MAF and it fires right up and idles high. Doesn’t turn off.
Posted via Mobile Device |
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