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04-22-2011, 06:42 PM
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#1 |
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Registered User
Join Date: Oct 2009
Location: Chaska, Minnesota
Posts: 137
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starting then dieing??
my motor was starting and running just fine...until i went to start it today and it starts and dies but if i feather the throttle it will blurp and pop...then die fuel pump sounds as it should
it has gas cause i just put some in it...the only thing that is different is i unhooked the factory gauges which i dont think would affect anything? 99 5.3....
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my build http://67-72chevytrucks.com/vboard/s...d.php?t=367330 84 short-wide 2wd. 99 5.3 vortec, built 4l60E, schoenfelds, bubb tune, cyber grey metallic 10 camaro ss/rs, 6spd manual, leather, loaded, cyber grey metallic |
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04-22-2011, 11:50 PM
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#2 |
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Has more rust than truck...
Join Date: Apr 2005
Location: Ivanhoe, MN
Posts: 2,421
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Re: starting then dieing??
Do you have a way of checking fuel pressure?
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04-24-2011, 02:25 PM
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#3 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: starting then dieing??
check for vacuum leaks if it can't maintain idle, double check that the MAF is connected and reasonably clean. Both can choke a car out.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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04-25-2011, 08:02 AM
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#4 |
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Registered User
Join Date: Oct 2009
Location: Chaska, Minnesota
Posts: 137
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Re: starting then dieing??
i checked fuel rail pressure-good
scanned codes-good cleaned the maf cleaned injectors still starts then dies. where specifically should i look for on the vacuum leak?
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my build http://67-72chevytrucks.com/vboard/s...d.php?t=367330 84 short-wide 2wd. 99 5.3 vortec, built 4l60E, schoenfelds, bubb tune, cyber grey metallic 10 camaro ss/rs, 6spd manual, leather, loaded, cyber grey metallic Last edited by low_84_inchaska; 04-25-2011 at 09:39 AM. |
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04-25-2011, 11:38 AM
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#5 |
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Registered User
Join Date: Oct 2009
Location: Chaska, Minnesota
Posts: 137
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Re: starting then dieing??
just realized my egr plug got blown out and was on the floor... could this be the culprit???
__________________
my build http://67-72chevytrucks.com/vboard/s...d.php?t=367330 84 short-wide 2wd. 99 5.3 vortec, built 4l60E, schoenfelds, bubb tune, cyber grey metallic 10 camaro ss/rs, 6spd manual, leather, loaded, cyber grey metallic |
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04-25-2011, 12:42 PM
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#6 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: starting then dieing??
the plug on the intake manifold, or the blockoff on the exhaust mani?
If its the intake then yes, thats a huge vaccuum leak introducing un-measured air into the manifold. I'm surprised it wouldn't throw a code, but not impossible.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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04-25-2011, 01:01 PM
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#7 |
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Registered User
Join Date: Oct 2009
Location: Chaska, Minnesota
Posts: 137
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Re: starting then dieing??
plug on the intake manifold...the reason it didnt throw a code is that the egr is programmed out>??
__________________
my build http://67-72chevytrucks.com/vboard/s...d.php?t=367330 84 short-wide 2wd. 99 5.3 vortec, built 4l60E, schoenfelds, bubb tune, cyber grey metallic 10 camaro ss/rs, 6spd manual, leather, loaded, cyber grey metallic |
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04-25-2011, 04:06 PM
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#8 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: starting then dieing??
Ya, I would assume its acting like a giant vac leak. Even if the egr was programmed out, I would think all the extra air might trip another parameter, but who knows. Plug that up, and see what she does.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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04-25-2011, 07:59 PM
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#9 |
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Registered User
Join Date: Dec 2009
Location: lindale,tx
Posts: 2,373
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Re: starting then dieing??
Some times engine has to be running for a certin amount of time to set a code or the ecm has to be testing for it. I would bet that is the problem but how did it come out?
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82 c10 5.3/4l60 84 c20 5.3/sm465 85 chevy k10 suburban LQ4/4l60 91 chevy c10 suburban Lsa 5.3/4l60 2017 Silverado whipple 5.3 1964 Vw beetle 1974 vw beetle |
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04-26-2011, 08:04 AM
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#10 |
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Registered User
Join Date: Oct 2009
Location: Chaska, Minnesota
Posts: 137
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Re: starting then dieing??
it twas the plug!!! runs like a champ!!
__________________
my build http://67-72chevytrucks.com/vboard/s...d.php?t=367330 84 short-wide 2wd. 99 5.3 vortec, built 4l60E, schoenfelds, bubb tune, cyber grey metallic 10 camaro ss/rs, 6spd manual, leather, loaded, cyber grey metallic |
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04-26-2011, 08:26 PM
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#11 |
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Registered User
Join Date: Dec 2009
Location: lindale,tx
Posts: 2,373
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Re: starting then dieing??
Yay!!!!
__________________
82 c10 5.3/4l60 84 c20 5.3/sm465 85 chevy k10 suburban LQ4/4l60 91 chevy c10 suburban Lsa 5.3/4l60 2017 Silverado whipple 5.3 1964 Vw beetle 1974 vw beetle |
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04-27-2011, 01:40 PM
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#12 |
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Registered User
Join Date: Oct 2009
Location: Chaska, Minnesota
Posts: 137
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Re: starting then dieing??
yeah i feel like an idiot.
__________________
my build http://67-72chevytrucks.com/vboard/s...d.php?t=367330 84 short-wide 2wd. 99 5.3 vortec, built 4l60E, schoenfelds, bubb tune, cyber grey metallic 10 camaro ss/rs, 6spd manual, leather, loaded, cyber grey metallic |
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