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Engine starts and shuts off immediately


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ron1128
New User

Oct 25, 2012, 6:45 PM

Post #1 of 8 (5936 views)
Engine starts and shuts off immediately Sign In

I changed the engine in a 2003 Toyota Corolla. The engine will start but then shuts off after a few seconds. I have changed all the sensors, intake, manifold....I'm not understanding why it's doing this. It's getting air, fuel and spark. There are no codes coming from any diagnostic tool....I need help!!


Hammer Time
Ultimate Carjunky / Moderator
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Oct 25, 2012, 7:04 PM

Post #2 of 8 (5928 views)
Re: Engine starts and shuts off immediately Sign In

Are there any security lights on or flashing when you try to start it?

I would check the fuel pressure with as gauge during the failure.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ron1128
New User

Oct 25, 2012, 7:15 PM

Post #3 of 8 (5918 views)
Re: Engine starts and shuts off immediately Sign In

no lights come on. i thought maybe an anti theft system but i called a toyota dealer and they ran the VIN and it doesn't have one....i was thinking the fuel pressure also but when i disconnected the fuel rail and tried to start it gas flew across my shop...i can't get a gage b/c it doesn't have a fitting....i'm stuck


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 25, 2012, 7:18 PM

Post #4 of 8 (5916 views)
Re: Engine starts and shuts off immediately Sign In

You don't need a fitting to test the fuel pressure. They have adapters for that. You need to test the pressure.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



nickwarner
Veteran / Moderator
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Oct 25, 2012, 9:11 PM

Post #5 of 8 (5890 views)
Re: Engine starts and shuts off immediately Sign In


In Reply To
I have changed all the sensors, intake, manifold....

For what all those sensors cost you could've bought a new fuel pressure tester kit that comes with all the adapters needed to tee into this system and give you a reading. Now you just have a money pit. Don't throw parts at it without being able to condemn them bad through testing. By no codes, do you mean the scanner says that the ecm has absolutely no codes stored or that it will not communicate?


Discretesignals
Ultimate Carjunky / Moderator
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Oct 26, 2012, 5:03 AM

Post #6 of 8 (5881 views)
Re: Engine starts and shuts off immediately Sign In

Just curious. Is this a reman, salvage, or new engine? Is the engine you replaced from the same year vehicle? Why was the engine replaced?





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Oct 26, 2012, 5:04 AM)


ron1128
New User

Oct 26, 2012, 5:54 AM

Post #7 of 8 (5868 views)
Re: Engine starts and shuts off immediately Sign In

it's a salvaged motor....i work at a garage and it's a customers car....i can't hook a pressure gauge to the fuel rail b/c there is no valve to hook a gauge to it...i have to make one....the engine was rapping b/c the customer ran the car out of oil and blew it....the sensors aren't brand new they came off the engine that i used to drive the car in there with....i just don't understand it's getting gas to start the engine but it wont run....how can it go bad from just sitting???


nickwarner
Veteran / Moderator
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Oct 26, 2012, 2:12 PM

Post #8 of 8 (5857 views)
Re: Engine starts and shuts off immediately Sign In

How long did this sit between the motor being blown and the new engine being put in? If more than a month or two the ethanol in the tank will be turning into pure crap. It has less than half the storage life of gasoline. That fuel pressure reading will really be needed.






 
 
 






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