You have the wiring diagramm from SOOB, there you can see pin B8 is coming from A/C pressure switch. Try to give it a minus signal alternatively a plus signal, if you are lucky, rpm will rise a bit!
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You have the wiring diagramm from SOOB, there you can see pin B8 is coming from A/C pressure switch. Try to give it a minus signal alternatively a plus signal, if you are lucky, rpm will rise a bit!
[QUOTE=1project2many;74246]I'm sorry, but I seem to be having trouble seeing the relay or any of the wires attached to it. Maybe you have a wiring diagram and can match up wire colors?
Sorry about that, On the firewall there are two relays, the one on the left is the Fuel Pump Relay. It was already removed so that photo only showed what I believe could be the TH400 relay. Here are two photos, one showing the Fuel pump relay on the left which was removed and the relay in question.
I cleaned up the wires, the colors are a little faded, but it looks like orange, tan/blk, red/blk, brwn/blk?
Attachment 13823
Attachment 13824
I do not have a complete wiring diagram of such a car, but normaly ecm is controlled by minus signal (earth, ground). If the A/C pressure switch will ground that wire, you may do that manualy (by a switch) thus rpm could rise up these rpm`s you need even when engine is idling. Somebody mentioned this earlier in that thread.
"AHWZ",is that your memcal? what is XUZA?
Thank you! I'll do some more research on the AC Signal, I don't want to guess and fry my ecm. ;-)
AHWZ=
Attachment 13826
XUZA is the name of the rig. :-)
The A/C on signal is +12VDC off the cycling switch.
Hello, i fear you have to set rpm manualy by a choke.
I opened AHWZ.bin ( you can find it here on the forum) with the $42.xdf
Wenn looking to scalars I found that there is no acceleration for A/C.
Off course can you give the eprom to s.b. here on the forum to change this setting!
I have bin AMUS for my 7747 ECM, it has IAC RPM added to Desired Idle with A/C on in Scalars, read the comment for setting this.Quote:
Hello, i fear you have to set rpm manualy by a choke.
I opened AHWZ.bin ( you can find it here on the forum) with the $42.xdf
Wenn looking to scalars I found that there is no acceleration for A/C.
" S.B.? is that a member on the forum? "
a lot of them : somebody . lol