adg016

Well, we finally got our swap done, tried to start the car. It cranked but wouldn't start. We tested for spark, no luck at any of the plugs OR at the coil. We've tried 4 coils, 2 power transistors, multiple cables, and gone through endless diagnostic testing all the way back to the ECU: continuity, resistance, voltage, etc. As a point of reference, there is good voltage at the harness that connects to the bottom of the coil, so the ECU is sending a signal that is reaching it. We're baffled.

HELP!!!

 

ssnh

what diagnostics made you try 4 coils?

Will

What about the Ignitor chip?

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adg016

The procedure that has you test resistance between the pin on the coil harness and the top of the coil. We were getting an OL reading. Went to the running SE-R, and we got the appropriate resistance. Swapped in the known good SE-R coil, got the correct resistance, thought it would start, and...nothing.

adg016

If by that you mean the power transistor, then yes, we tried two.

SENTRASER

Checked the distributor yet? It houses the CAS, and if it was bad, the car wouldnt start.

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93specv

grounded?

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adg016

We can put another one in, but we're not getting spark from the coil, which is of course before the dist.

adg016

Which one? We tested for ground and it appears to be ok.

adg016

Could there be an incompatibility of JDM/USDM pieces (distributor, coil, transistor) in the ingition system and how they communicate with one another?

mickeyj36

whats the resistance of the primary wire??

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adg016

You mean on the coil?

SENTRASER

I think you have to swap the USDM distributor orver, IIRC.

ssnh

i did not when i did a ga16 to sr20.

adg016

I GOT IT STARTED (intermittently) WHEN I TOOK A BREAK FOR LUNCH!

I decided to try to swap the O2 and the distributor connectors as Mike K. suggested. On our car, that would actually be physically impossible, as the O2 is a 3-wire and the distributor is a 2-wire. The connectors are totally different shapes. That said, the little black rubber insulator fell out of the distributor connector and so I hooked everything back up, and VOILA, it fired right up! It started 3 times, but then didn't on the fourth try. I unplugged and plugged the harness back in, and it made a clicking noise and then I was able to start it again. I'll futz with the connector/distributor some more now that I have identified the exact area.

Thanks to all that tried to help.

SENTRASER

So yes, I was correct, it was a distributor problem.

SENTRASER

Glad you got it started, now get some silicone lubricant(the stuff you use on spark plug boots) and put some inside the electrical connector. Or you could use some dielectric jelly, or contact oil even! Just get sometihng in there to promote connection.

adg016

Haha, yeah the distributor...sorta Was planning on spraying some electrical cleaner and yeah doing a bit of electrical lube. Thanks!