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Discussion Starter · #1 ·
On a newly rebuilt engine, the engine will not run for more than 3 seconds. It starts every time though. The only code that the ECU throws is for a water temperature sensor, which is physically broken. It just seems like at first the rpms go up to around 2000, then drop to about 1000, and then all of a sudden it just stalls. Any ideas?
 

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Could be a vacuum leak, which includes the engine oil dipstick. Do a good job of inspecting vacuum lines for routing and leaks.

See: http://www.mr2-tech.com/bgb/mechanical/volume1/emission_control_system.htm


Or, Fuel pressure or volume. There may be enough at start up to get the engine cranked, but not to sustain the fuel flow at the injectors. This reminds me of an old carburated engine that will feed off of the fuel in the float bowl, but there wasn't filling enough volume flowing to keep it full. So, I'd check for low pressure (indicating a bad/weak fuel pump) or low volume (bad pump OR plugged line/filter).

You can find the info to check the fuel pressure at:
http://www.mr2-tech.com/bgb/mechanical/volume1/efi_system.htm
 

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Discussion Starter · #7 ·
Since you brought the issue of fuel up, I should mention that I have a third of a tank of gas in the car. It is about 1 year old. Could that be the issue? Should I fill the other 2/3 with fresh 87 octane, or should I even put 93 octane, just to mix it?
 

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clawhammer said:
Since you brought the issue of fuel up, I should mention that I have a third of a tank of gas in the car. It is about 1 year old. Could that be the issue? Should I fill the other 2/3 with fresh 87 octane, or should I even put 93 octane, just to mix it?
oh yeah... that could do it. depends on the conditions and all, but yeah you should throw some fresh fuel in there. fuel goes stale pretty quickly. definitely do that.
 

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I had a similar problem after a swap. I think my issue was caused by vapor lock in the fuel rail. (air in the fuel rail). I had to start the car and keep spraying starter fluid in the throttle body. After a while it sputtered then ran on its own.
 

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Discussion Starter · #10 ·
I added 6.5 gallons of 89, so now it's about half old half new. I glanced under the car, and noticed that the intake manifold was wet. I had my mom smell it because I can't smell things, and she said it's gas. So, looks like I have a gasoline leak.

I will keep you guys updated. I'll definetely try the starting fluid in the throttle body as well.

Another thing, tonight I started it up, it stalled, and then I couldn't start it again. I'm almost positive that it's fuel related.
 

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More than likely you checked this already, but when the AFM connector is not connected properly (or just plain disconnected) the car will tend to start, but drop rpms and then die.

Whatever the problem is, let us know when you've fixed it.
 

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Discussion Starter · #17 ·
Going back to the thread, I need help asap.

I have the mechanic at my house now, and he fixed the fuel leakage issue. One of the O-rings was put in wrong, and it was leaking. However, the car still dies after a few seconds.

Here's what he observed: If the car cranks for a few seconds, then the starter will stay engaged and that is what is causing it to die. However, if it only cranks once or twice, the started will not stay on. Any ideas that he could look at while he is here?
 
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