e to i swap - timing problems?

[1RowdyDawg]

I'll try to condense this. Picked up an 86 with a non-running 90 i motor / harness / DME with lots of other new stuff on motor. Finally got engine running after cleaning stuck injectors but she runs very rough and stalls at idle. Have gone through pretty much everything by swapping out known working parts from one of my daily drivers: air flow sensor, ICV, O2 sensor, plugs, injectors, DME, new fuel, and still she runs rough and stalls. Seems that we have a timing problem and am wondering if anyone has ideas for me. I am going to pull distributor cap and check rotor but that is all new stuff from the previous owner so I don't expect to find a problem there. Also plan to pull radiator, etc and get into timing belt to see if anything looks suspicious there. Any other ideas?

[jlevie]

You might try replacing the crank sensor on the lower front of the engine. Have you checked the fuel pressure?

Do check the timing belt. If it is off a tooth or two it could be the cause.

[Mr Deagle]

try checking if the spark plug wires are in the right spots

[Dibo718]

Does it start reving itself while at idle then stall out? maybe the ICV(idle control valve). just something to check.