EJ20G Swap - Cam sensor getting 3 signals (instead of 4)

[BoostAddict]

Hey,

We're still trying to isolate the problem, that's causing my ECU to get 3 ignitior signals instead of 4 in my EJ20G.

Since it seems that the cam sensor is only getting 3 signals (instead of 4), we're starting to wonder if it might be a faulty cam sprocket. The right-top cam sprocket (closest to the cam sensor) has 4 notches, whose position the cam sensor picks up. What if one of those notches was somehow bent and the sensor wasn't receiving the signal.

Could this be THE problem?


Thanks,
P.

[BoostAddict]

...After reading a couple of posts, I came accross this one:

http://bbs.legacycentral.org/viewtopic. ... m+sprocket

It makes me think that we might've screwed up one of the notches on the crank sensor during the timing belt installation.

Could I use a USDM 2.5 RS DOHC crank sprocket on my JDM EJ20G?


P.

[BoostAddict]

...any suggestions? If someone could suggest what this "missing spark" on 3rd cylinder could be caused by, it'd be great

I really hope that it'll fire up on all 4 after we replace the crank and driver-side cam sprockets.


Thanks,
PC

[ej22t]

Hi Pete , sorry that I keep busy to reply back to you.
For your problem, have you check the ignitor ?
Have you sure you are using the correct ignitor for your coil since its from SVX, you may have to use the SVX one to make it work!!!
I haven't use any of the coil pack from the EJ20G since I using the stock EJ22T wiring, I didn't have any missing spark problem.

Eventhough I swap to EJ20H engine, I still using the EJ22T wiring and it seems no problem after 5 weeks of driving in all condition in Toronto!

Ben

[BoostAddict]

Ben,

We've checked the ignitor on all channels (it's got 6 and we only need 4). It seems like the ECU isn't getting the signal to fire the 3rd ignition channel. Any ideas on what could be causing that?


Thanks,
PC

[Matt Monson]

Pete,
I too have been too busy to reply to your PM. Can you post pictures of your ignitor wiring? My first thought is that maybe you mis-wired it?

I do actually have a spare SVX ignitor that I could send you if you want to try that. We could work something out for it. I paid through the nose for it, but that was 2+ years ago during my first swap and I'd let it go for freight plus a few $$$....

[BoostAddict]

Hi All,

Thanks for all your replies
I've got the '98 2.5 RS crank and cam sprockets ready to be installed. Unfortunately I didn't get a chance to work on the car this weekend, but the next time I'm at the shop I'll take pictures of the Ignitor wiring and I'll whip-up a wiring diagram for everyone to verify.

In the meantime, if anyone else has any ideas on what else could be causing the ECU to be sending out signal on 3 out of 4 ignition channels, please share.


Thanks,
PC