Engine starts but won't stay running
04-09-2009, 10:32 PM
#1
Staging Lane
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
Engine starts but won't stay running Got everything hooked up, disabled VATS using EFI live and started the engine. Just starts then dies. Its a 5.3l from a 2000 silverado.
Anyone else had this problem?
Anyone else had this problem?
04-09-2009, 11:39 PM
#4
Double check the VATS
make sure the grounds are good. the harnless behind the head and the pcm grounds
Does it die right after you let the key return to run from the start position ?.. if yes, make sure that the pcm pin 12+ ign stays hot while cranking and after you let it off.
What is the fuel pressure as you get prime, and that it stay within range as you start and runs (or attempts to stay running)
make sure the grounds are good. the harnless behind the head and the pcm grounds
Does it die right after you let the key return to run from the start position ?.. if yes, make sure that the pcm pin 12+ ign stays hot while cranking and after you let it off.
What is the fuel pressure as you get prime, and that it stay within range as you start and runs (or attempts to stay running)
04-09-2009, 11:59 PM
#5
Staging Lane
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
Yeah, dies as soon as I let it go back to run. I'll check the wiring and make sure I'm not missing anything.
I don't have a fuel pressure gauge so I'm not sure how much pressure there is. I did notice that after it dies and the key goes back to run the pump does the prime sequence again.
I don't have a fuel pressure gauge so I'm not sure how much pressure there is. I did notice that after it dies and the key goes back to run the pump does the prime sequence again.
04-10-2009, 12:58 AM
#6
what car are you putting the engine into ?...
If this is a 60's or 70's gm.. there is a wire that feels the coil from the starter to add a full 12+volts on starting and then cut out... if the car came with a resistor block to lower the voltage down from 12+volts. that is not one of the wire to use...
If this is a 60's or 70's gm.. there is a wire that feels the coil from the starter to add a full 12+volts on starting and then cut out... if the car came with a resistor block to lower the voltage down from 12+volts. that is not one of the wire to use...
04-10-2009, 09:19 AM
#7
Staging Lane
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
It's in a 69 camaro. I did replace the resistor wire with regular wire for all of the ign + connections. I've got the fuel pump wired through a relay and I think that is how it should be.
Trending Topics
04-10-2009, 11:44 AM
#9
Staging Lane
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
Figured it out!!! The throttle stop tab was bent and holding the throttle open. I fixed the tab and now it's running and learning to idle again. Woohoo!
Thanks for the help!
Thanks for the help!
04-10-2009, 05:38 PM
#10
Way to go.. don't worry about the dumb mistakes.. we all have them.. LOL..
Just keep posting and maybe someone will learn from it.. I know many have said that they have learned from my dumb, bone head ones.. LOL..
Glad to hear you make steps forward now.. keep us posted..
How about some pictures !
Just keep posting and maybe someone will learn from it.. I know many have said that they have learned from my dumb, bone head ones.. LOL..
Glad to hear you make steps forward now.. keep us posted..
How about some pictures ! 
