Im getting trigger system errors when attempting to start my car.
What could cause this?
88 rx7 TII. newly rebuilt engine, new cas.

 

Does it always throw code or just once in a while?

 

Always. Am unable to get it to start.

 

I would start with checking your wiring.

 

I'm going to re-checking that.. I have a new cas from Atkins, so I'm assuming that's ok. Any other areas I should check?

 

"New" from Atkins. I'm going to say that could definitely be an issue. Sounds like your first start on a new build? Yea, wiring.

 

Did you put the CAS in correctly? (Setting the e-shaft at 5 deg ATDC, and aligning the worm gear with the casting before putting it in)

 

Y, CAS stabbed correctly.

 

Can you put your old CAS in and test it?

yeah sounds like a wiring issue.

 

Going to see what results I get with the old cas.
Also, the harness that came with the ECU used shielded wiring. Was only a couple of feet long, so
I had to extend it with my own wiring and the wiring was unshielded. I routed so that it does not go near the alternator, but possibly the fact that it's unshielded cld cause an issue.
So, I'll try rewiring the extension with shielded wiring to see if that makes a difference.
I used insulated spade connectors so that I wldn't have to hack the wiring if a swap was necessary. Also my wiring is a slightly heavier gauge-but I dont think either wb an issue.

 

If you cant even get it running yet Id surprised that your issue. But regardless you have to shield it, normally the EMI from the spark can be the bigger issue. you will be chasing gremlins for years,so just do it now.

what haltech model. Its very easy to pull the pins from the harness point and just run a new sheilded cable the correct length (I added 4 new sheilded lines to my 1500 setup, was easy as)

 

I've got an Elite 1500. What gauge wiring did you use?

Also wondering if maybe the pinout connection from the ecu connector to the wire is faulty. I'll need to check that also.

 

You realize you could have checked wiring in 5 min. Did you check it? Any gauge up to 22ga is fine. You dont need fancy shielded cable. If it's causing problems, just wrap it with copper tape and ground it to chassis on ecu side

 

as stick said the gauge can be anything. its just a signal not passing current

 

Understood. Sorry for the newbie q. Frustration is causing me to grasp at straws here.
I checked the pins in the connector--looks good. The wiring seems sound. Gonna try my old cas tomorrow to see if makes a difference.

 

I just wanted to make sure you knew what we meant when we said "check wiring". It doesn't mean whether wiring and pins look good. It means checking whether correct pins on the ECU harness is contiguous with the 4 pin CAS harness with a multimeter. Sorry if you already have done that. It sounded like you just looked at the wiring superficially.

Attached are 2 pictures. One is your FC harness side. Another is ECU side. Make sure they are terminated correctly before continuing.

 

Y, thanks for the attachments but I had already done this. In fact had haltech walk me thru it to make sure I had it setup correctly. -- but I appreciate the help.

So, yesterday I got a 2nd "new" CAS, installed and cranked it with no trigger errors.
Today, got it started and idled it for 20 mins or so with no errors. So, it seems that my previous "new"(rebuilt) CAS was faulty.

 

Good to hear

on a side note once you get all tuned up would be good to see your map. Keen to see what everyone else's 1500 map ends up looking like

 

That's Atkins Rotary for you!

 

Between my RX7 and RX8, I've dropped alot of coin with them.
Outside of maybe Mazdatrix, any suggestions for parts?