2&3 not firing

jserman · 11-20-2007, 05:45 PM

OK

I have a 97 GST with a 1G swap... car has all 2G timing gear and harness...

well one day my car stop runing..

I have replaced all plugs and wires coil and transitor pack.. thought I had it figured out and it as the cam positin sensor.. replaced that and Iam still not getting spark from 2&3...

I am a DSM noooob but pretty car smart... I need some ieas on the problem I totally stumped..

thanks for the help

Talesin · 11-20-2007, 07:36 PM

Have you checked your coilpack? 2&3 are on one coil, as are 1&4. Grab a multimeter and check the impedance, your coil may have blown open internally.
Also, did you get the RRE plug-and-play 1G CAS harness adapter, or did you chop up your stock harness to make it work? If the latter, you might want to take a look at your wiring job... might have come loose, if you're certain it's the CAS causing the problem.

jserman · 11-20-2007, 07:40 PM

have tried multiple coil packs and it doesn't seem to mater and car has 2G cas with 2G harness...

NN4S · 11-20-2007, 08:15 PM

Let's clarify; you have a 1G engine in your 2G but you're still using the 2G sensors? You installed the 2G crank sensor on the 1G engine? The crank sensor signal controls the fuel & spark signals for 2&3, IIRC. The 2G CAS signal only triggers the spark for 1 & 4; the 1G CAS produces both signals and eliminates the crank sensor. Besides that, getting the crank signal from the 1G CAS gets that fragile sensor away from the crank nose and being whacked by the trigger plate in the event of a little thrust bearing wear.

I believe your best bet is to use a black-top (hall effect) 1G CAS for both signals; the wiring swap is straightforward and proven.

jserman · 11-20-2007, 08:28 PM

I did not do the swap I got he car in a trade... but yes it is a 1G motor in a 2G.. with all 2G harness and timming gear...

so is it possible that my crank angle sensor went bad???

I have looked into doing a 1G cas but I don't know where to get one....any help would be greatly apprecaited....

THANKS....

NN4S · 11-20-2007, 08:44 PM

You should be able to find the CAS in the classifieds or on Ebay without any trouble. The following link has the wiring info you'll need to hook it up:

RRE Instructions

jserman · 11-20-2007, 08:46 PM

yea I have looked into the wiring looks prety easy and straight forward.... just to clairfy I need a 93-94 CAS right?????? cause thats what I have been looking for....

NN4S · 11-20-2007, 08:56 PM

93-94
MD184529
Black lid, Hall Effect Type, Plug Harness

It is the preferred one to use for the swap since the hall effect sensor presents less of a chance of a missed signal triggering a CEL.