For the last few days my 20B has been running pretty rough. My water temps started going up, and after checking the cooling system I put a timing light on the plug wires to verify their operation.



Five of the six wires gave me a good reading. The L1 was showing no light at all. I swapped the connectors on the L1 and T1 coils to verify whether it might just be a bad coil, but the coil with the L1 connector still wasn't firing. We hooked a meter up to the wires to check for power, ground and continuity across the length of the harness and everything checked out fine.



We then stuck a plug in the plug wire and turned the car over. Oddly, there was a spark; however, when we put everything back together the car still idled roughly. Being the end of the day, I started off for home, and the car would ;bog down under load unless I was VERY gentle with the throttle. I pulled over and double checked the connector to the coil, making sure that it was fully seated. The car seemed to be a bit smoother, and it didn't give any trouble when I pulled back out into traffic. About a mile or so up the road, it bogged down yet again under more load and throttle.



My questions are this:

1) Is it possible that even though everything spec'ed out on a meter, I'm still getting an intermittent spark or signal at the coil?



2) Is there a specific or known problem that might give me spark when I'm turning the car over but not under load?



3) Is it more likely that it's the control unit itself?



FWIW, my setup is the E11 running to a set of LS-1 coils. It has run fine since I got it from j9fd3s up until now. The car ran fine before I pulled the manifolds to get them powdercoated, and nothing was touched or changed in the interim.



Does anyone have any thoughts or insight? I don't want to have to send the ECU off except as a last resort, especially if it turns out to be something much simpler.



Thanks!



Reese

maybe its a coil?

[quote name='j9fd3s' date='May 31 2005, 09:40 AM']maybe its a coil?


[/quote]



"I swapped the connectors on the L1 and T1 coils to verify whether it might just be a bad coil, but the coil with the L1 connector still wasn't firing. "





No dice. The coil that wasn't firing fired just fine with the T1 harness connected to it. Any other thoughts?



Reese

i guess it could be the harness, have you looked at the pins in the connector?



you might wanna look in the software too, maybe some setting isnt right, or try a different firmware?