New problem. Dies out of idle?

[xaero_81]

Just got done swapping a 1997 OBD2 Aspire motor into my 1993 Festiva. I swapped everything over from the Festiva just to make sure that there wouldn't be any problems. The only problem that I came about with swapping parts is that the crank pulleys have different timing marks. Almost 90 degrees off!!!

Just last night we got it idling smoothly after timing it. The problem now is that it cuts out under load, or in higher rpms. CEL pops on when it cuts out, and most of the time it will stay running. Tried a different VAF, just in case and it didn't help. Also just double checked the timing. Coil seems to click when it cuts out but has good spark when in idle. Can rev it in neutral too without it cutting out too.

Anybody have any ideas?

Thanks,
Donny

Edit:
#1 Injector seems to be leaking fuel on rail side. I'll try a new O-ring.

[iceracerdude]

You need to check the timing marks on the top sprocket for the timing belt, you know, the 12:00-3:00 marks, in relationship to the external pully. Also, I didn't see any mention of the crank position sensor.

[bhazard]

Crank sensor was removed. All the OBD stuff is gone, its basically a stock festy. The timing cover for the aspire has the "finger" in a different spot than the festy cover, therefore the timing marks on the crank pulley are in a different spot too. We got the cam timing straight. It idles great and all, just craps out under any load.

[xaero_81]

Update:

Put new O-ring on injector.
Fiddled with CPS.
Replaced O2 sensor.
Tried different plug wires. (1-3-4-2 right?)

No fix.

Another thing that I forgot to mention was the airbox "mod"
Seems to make VAF "flap" noise really loud.

[Team Lightning]

The VAF could be the problem. What kind of "mod" was performed on it?

[bhazard]

He just drilled the holes in the bottom of the airbox.

[bhazard]

I haven't ruled out the thought of a vacuum leak. He did swap intake manifolds around and something may have happened in that process. It did seem to idle well though.

[xaero_81]

The VAF could be the problem. What kind of "mod" was performed on it?

I tried a different VAF. Didn't seem to do anything. Anybody think that the belt might be bad or be stretching somehow? Makes me wonder because it can free rev fine but not when under load.

Again, any help is greatly appreciated.

Thanks,
Donny

[shadetree]

Sounds like iac plumbing to me . Could you have missed a hose or maybe the previous engine had an idle screw adjustment . I have to go through all that on a rering so might start there . Just trying to help.

[btaylor]

Yeah its a tough one, I want my other car back Just gotta keep going through stuff, prob something minor but not sure at this point...

[FestYboy]

swap out your coil, ones in their way out can exibit your symptoms.

[xaero_81]

Update:

Replaced coil with working one from green car.
Replaced Spark Plugs.
Wiggled more connectors.

Drove it around today, realized it pulls fine regardless of engine load. Just intermittently cuts out except for in idle. Thinking it may be fuel pump but I don't know how to check that while driving it. I replaced the fuel filter about 10,000 miles ago too.

Any other ideas?

Thanks,
Donny

[bhazard]

Pull the Capri pump and try it.

[iceracerdude]

You can do this: put some vice grips on the return line and see what happens at idle.
Now take it for a ride and see, This will tell you something about the pump, and PR. I'm still thinking the advancing is wrong. Had one that didn't want to advance and it acted just like this, would fall on it's face. In my case it was a gummy mechanical advance. In your case, you've got skewed timing marks.
You may be too far advanced already or not advancing enough.

[btaylor]

well could be pump, we will have to try a few things tomorrow. I may be able to assist after that person comes by to test drive a car. So it just randomly cuts out under load or not if its in gear?