3 wire SOHC MAFS to 4 wire CA harness Q

[TruckFortySX]

Anyone have experience wiring this setup? The SOHC MAFS has a blk/wht, blk, and a wht wire. The blk/wht is obviously 12v, the blk is a ground reference, and the wht is ground signal. From what I can tell from the 3/4 wire CA diagram below, I should be blk/wht to blk/wht, blk to blk, and wht to grn/blk but I am getting a very erratic signal. Do I have this wrong? Does the gren/yel need to be tied in?

Experience please!

http://i129.photobucket.com/albums/p206/fourdoordrift/IMG_1220.jpg

http://i129.photobucket.com/albums/p206/fourdoordrift/IMG_1221.jpg

http://i129.photobucket.com/albums/p206/fourdoordrift/ca18_mafs_wire.jpg

http://i129.photobucket.com/albums/p206/fourdoordrift/ca18_mafs_wire.jpg

http://i129.photobucket.com/albums/p206/fourdoordrift/ca18_mafs_trouble.jpg

http://i129.photobucket.com/albums/p206/fourdoordrift/ca18_mafs_trouble.jpg



THANKS GUYS!

[superJoy]

KA24E --> CA18DET
black --> black
black/white --> black/white
White --> Green/black
***Green/yellow don't connect

However, KA24E MAFs and CA18DET MAFs are not the same. See here in this voltage to airflow chart:

http://media.impactblue.org/ecu/maf-comparison.gif

Use of a KA24E MAF on a CA18DET will cause the engine to constantly run lean. Towards the top end, there's a nearly 20% difference in voltage. Many of the "cold start" problems associated with CA's are caused by use of the incorrect MAF.

The engine will run on the KA MAF, as many have done over the years, but to get it running to full potential you need to socket the ECU and use RomEdit to insert the KA voltage map into the CA table.