No spark cyl 1-4, Replaced cas, coil, power trans HELP PLEASE!

[fpgreen]

I have no spark in cyl 1-4. Tac says car is idling at 400rpm and no CEL. Replaced almost everything I can think of. Anybody's advice would greatly be appreciated.

 

[luv2rallye]

Check/clean wire connectors and check for broken wires on the coils & power transistor. If no go, reseat ECU connectors (disconnect battery first).

 

[fpgreen]

If no go, reseat ECU connectors (disconnect battery first).

What is involved in doing this? I have already replaced the connector to the power trans and checked the conn between the coil and it is making good contact. Would the capacitor going bad kill the spark to only one coil??

 

[open]

sounds to me like the ecm went dead.

 

[PropXprt]

Never mind what I said; you have a 2g

 

[luv2rallye]

What is involved in doing this? I have already replaced the connector to the power trans and checked the conn between the coil and it is making good contact. Would the capacitor going bad kill the spark to only one coil??

The ECU is behind the radio (have to remove center console). Pull connectors off, check them, make sure all pins are clean and locked in place, put back on. Your ECU may be bad. Check inside it for leaking capacitors also (or rotten egg smell). It provides separate signals for cyl 1-4 and 2-3 power transistors (on the 26 pin connector pins 10 (black/blue wire)and 23 (brown/red wire) respectively). If coils and power transistors are good, about the only thing left is wiring and ECU.

 

[fpgreen]

Well when I replaced the wiring connector I was about an inch short of finding where there was a break in the wire. No wire was exposed or any puncture marks, but after I cut it off i could feel how soft it bended in one spot. It was the trigger (-) wire for cyl 1-4. Thanks for everybody's feedback and help.

 

[luv2rallye]

Your welcome and thanx for posting what fixed your problem. Too many never do that. It helps everyone to know the result.