Help! After motor swap, no start problem

[JKL]

I replaced a motor and it's not starting. 1990 turbo awd 5spd. The head was refinished/milled and everything in place. mls head gasket. used block w/80k. All sensor and plugs in place. ecu was checked and it's good. power transistor, coil pack checked, MPI relay is good. timing belt is correct. CAS seems to work. triggered the fuel pump (brand new 190) when rotated. spark in all cylinders and getting fuel but no start.

Turned out i had the plugs for the injector resistor and ISC/TPS mixed. Now the car starts but dies immediately and shows a code 41 fuel injectors. I've checked the injector coils for resistance and it shows 2.5 ohms across. I'm now guessing it's the resistor pack. I checked resistance of the resistor pack harness and it's 12 ohms across pin 2 to pin 1 &3 on the sides w/the 3 pins and 6 ohms on the two pin 1 &3 side. Not sure what that means but I'm guessings its the resistor pack and not injectors. I recently swapped the tps/isc plug and resistor pack plug and cranked many times w/o knowing.

I got another problem. Once I swapped the connectors to the correct ones I cranked the car for couple seconds and it tried to start but then died. I turn the igition off then turn it back on but the ecu wasn't on. I had it back in the off position for a few mins then back on but ecu didn't turn on right away. There was a delay of a few mins before the ecu turned on w/ the igition in the on position. Everytime the key is taken out and put back in the ecu would delay a few mins before it turned on. At times it doesn't even turn on even after waiting few mins. I'm looking @ the stock boost gauge and cel for ecu on. It seems okay now but any thought why that happened?

I need help. spent too much money and time to let this sit. thanks

 

[JKL]

I've double checked all my connections; 2g mas hard wired to 1g wiring. I even swapped out the ecu. In the end I disconnected my HKS SAFR which was the cause for my no start. So now the car starts and stays running but it has a poor idle. It sounds like it'll stall out soon and spews out massive amounts of black smoke and liquid out the exhaust pipe during idle. As soon as I give it gas, the engine stalls when the rev comes down. Also, there's constant smoke rising from the manifold area. There's a leak coming between the exhaust housing of the turbo and the O2 housing. I also get the codes 12, 13, 14. Any thoughts as to what my next step should be?

 

[Quasimondo]

12 - MAS
13 - Intake Air Temp sensor (inside of MAS)
14 - TPS (also includes the closed throttle switch)

Check the hardwiring between the 2G mas and your harness wiring.

The MAS wire(Green/Blue Stripe) should mate up with blue/yellow stripe on the 2G plug.

The IAT wire (green/orange stripe) should mate up with red/blue stripe on the 2G plug.

The Idle pos switch (Green/white stripe) should mate up with red/white stripe on the 2G plug.

The ECU you swapped, was it pulled from a 91-94? The pin connections for 9 and 14 (air flow sensor & closed throttle switch) are reversed from a 90, that could cause a CEL also if you didn't swap the pin connections. Check the connections at the MAS to make sure you have it wired up correctly, put the 90 ECU back in, and see what happens.

 

[JKL]

Both are 1990 turbo m/t ecu. I tried both ecu's. With one ecu there's no black smoke during idle and gives the code 12 & 41. With the other ecu there's alot of black smoke and gives the code 12, 13, 14. With both ecus the car will stay running @ idle but once acceleration is pressed, it stalls out and dies while the rpm is coming down from the rev. I've checked the 2g mas to 1g wiring and it's correct. A Bad mas?

 

[Quasimondo]

It's a possibility. Wire up your old 1G mas and see if that changes anything. When you were putting the new engine in, did you damage any part of the harness?

 

[JKL]

sold the 1g mas. The only possible damage I can recall is when the tranny mount was pushed against the wire bundle. I'll have to check around that area for any wire exposer or brakage.

 

[JKL]

No wire damages. All the wires seem good. What should I look to test or replace? help

 

[Kash]

check your plugs now, chances are they are fouled out and need replaced, atleast thats what happend when i rebuilt my motor.