no start after swap Options

[wvuguy]

I swaped 7AFE in my 94 celica ST. Now the only way to start is to spray some throttle body cleaner in intake and it starts right up. I changed the fuel filter, verified there is spark when cranking and fuel injectors fire. Changed out the temperature sensor. Double checked all wiring and vacuume lines.
One thing is noticed is once the engine is running, the rpm will flicker if I turn the headlights on. Also If I put the car in drive, it shuts down. It will run in reverse though.
Any idea? thanks.

[wvuguy]

Thanks rave2n. I am gonna do that once I swap the manifold. I just put new NGK plus and wires, new dist cap and rotor. Still needs a spray in intake to start but idles very smooth now. While it was on I hit the OD button on shifter and it bogged down and turned off. I am leaning towards an electrical problem or short.

[rave2n]

Thanks rave2n. I am gonna do that once I swap the manifold. I just put new NGK plus and wires, new dist cap and rotor. Still needs a spray in intake to start but idles very smooth now. While it was on I hit the OD button on shifter and it bogged down and turned off. I am leaning towards an electrical problem or short.

See I don't think its electrical because you have spark. The car can run and idle.

The reason I think its something on the manifold, not actually the manifold itself, is because there are many controls on the manifold. You can most likely use the new manifold, but swap out all the components off the old one. I cant recall everything that resides on the manifold, but I know its quite a bit.

Have you tried resetting your ECU just for S&Gs?

When I had a problem simliar to this, it was the distributor itself was shot, which is why I said timing earlier, but you've confirmed that is correct, which is why I fall back on some sort of sensor or control on the manifold, being you said you used the new one. Now you said you used the old MAF sensor, but that resides on the firewall so I expected that =)

We know its got fuel, or it wouldn't run, we know it has spark, or it would start at all. Originally I thought it was not enough fuel, but now it would appear the fuel/air is getting where it needs to, just not correctly, which is why I feel its something from that new manifold.


Was this 7a out of a Corolla?