I have 93 that basically had nothing left in the engine compartment. 2.5 years later, everything is together with the single turbo modification. I started the car with the original ECU because I didn't have the Power FC yet. It started and ran, pretty rough, but it ran. The FC arrived, I installed, it started as before; I had it running for a while, but not very long. The next time I tried to start it, it would not run. It acts like it's going to fire up, but does nothing. It has good compression, spark, I've checked and rechecked the hoses and wiring. I swapped out the FC for the old ECU. Same problem. The weird thing is, I can get it running with the map sensor unplugged. I've been trying to figure this out for over a week now. I've checked all over the forum, and haven't found anything yet that has helped. Saw something similar with a couple 2nd gens, and they were push starting to get it going. Any suggestions, ideas would be very helpful, because I'm feeling hopeless that I'll ever be road worthy.

 

where are you located? there are plenty of indiana guys someone will probably be willing to come help.
-Nic

 

Bloomington - if someone's close and comes through this way, let me know!

 

do you have a shop manual? have you completely checked your wiring? it sounds like something is crossed... the map sensor runs on a brown wire w a white stripe and it is 5 volts. many of the sensors that tell the ecu what's going on run from this B/W wire. i would check w a multimeter that you have it wired correctly...

howard coleman

 

I'll be down at IU this weekend, I don't know everything but it may help to have another pair of eyes look at it. Shoot me a PM.

 

Do you have a comander for the PFC?

 

Try pulling the fuel pump fuse and turn it over. Maybe it's flooded.

 

Radkins - I do have a commander, but I haven't used it much yet. Is there something I need to look for with it? I'll check the fuel pump fuse.

Howard Coleman - I do have the manual. I think I've checked the map sensor wire, but I'll double check.

Here's what I have done:
*checked fuel pressure because when gas is injected in the maniford in the primary area it will fire up briefly, then die. I blocked the return line, checked max pressure which was 93 lbs. normal pressure is 37 lbs.
*crack angle sensore wiring is okay. I've checked the continuity on all the wiring. I've jumped relays - all are working.
* There are no vacuum leaks.
*Compression check shows 90 lbs.
Here are some issues I'm not sure about: I removed the solenoid for the twin turbo - anything special need to be done with the left over wiring?

I am using the stock injectors, and they have been cleaned - would they cause the problem if they are stopped up or shorted somehow?

I've unflooded so many times now I can almost do it blindfolded.

 

So you are saying it will fire with starting fluid, then die?

Look at the inj duty on the comander and make sure it is firing the injectors when you are cranking it. It should read 3-5% duty while cranking. I have seen problems in wiring where the PFC wouldn't fire the injectors, so it would read 0% while cranking. If it reads 0% check the wiring harnes at the PFC and look for broken wires.