air flow sensor wiring

carter · 12-08-2000, 05:47 PM

can anyone help me out with the wiwirng of the 4.6 air flow sensor? it is marked A B C D on the top. one is +12volts, one is ground, one is signal, and one is signal ground. can anyone let me know which is which? if by color that is fine also. thanks in advance!!

97snakedriver · 12-09-2000, 04:20 PM

If you look at the harness head on with the clip on the top, it goes (from left to right) REF(A), SIG(B), GND(C), B+V(D).

carter · 12-09-2000, 07:38 PM

thanks for your reply, but are you sure? according to chilton's it is A= power, B= ground, C= MAF rtn, D=MAF. not knowing what rtn means, nor is it referred to anywhere, nor does anyone else know what it means i am assuming that C= signal ground.where did your info come from? thank you.

97snakedriver · 12-09-2000, 09:28 PM

Whoops! I listed them backwards:

(D)Ref, (C)MAF signal, (B)GND, (A)B+V

You should probe across MAF signal and GND to determine if your MAF is working. Should be around 1.5-2 volts at idle. B+V is the battery possative terminal and should be 12V (with respect to GND).

MAF rtn is what you are looking for.

carter · 12-09-2000, 09:43 PM

so what does MAF rtn stand for? are you sure that you dont have C and D mixed up. I believe that C is the signal ground and D is the signal output but i may not be right, that is what i am trying to establish. I am using a 4.6 mass air sensor on another engine as a conversion and need to make sure that it is wired correctly. thank you for your replies.

12-08-2000, 05:47 PM	#1
carter Registered Member Join Date: Dec 2000 Posts: 3	air flow sensor wiring can anyone help me out with the wiwirng of the 4.6 air flow sensor? it is marked A B C D on the top. one is +12volts, one is ground, one is signal, and one is signal ground. can anyone let me know which is which? if by color that is fine also. thanks in advance!!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Trick Flow intake problems	shacar87	Windsor Power	9	11-14-2003 05:53 PM
Head and intake flow. Something to think about. :)	5ohCOUPE	Windsor Power	3	03-16-2003 08:52 AM
ported GT40P flow numbers, and pictures	fiveohpatrol	Windsor Power	16	12-12-2002 02:41 PM
Trick Flow Manifold Install	squid	Windsor Power	1	11-09-2002 06:24 PM
Exhaust Flow Numbers on Heads	95mustanggt	Windsor Power	6	02-04-2002 11:09 AM

12-09-2000, 04:20 PM	#2
97snakedriver Registered Member Join Date: May 1999 Location: Blacksburg, VA Posts: 1,526	If you look at the harness head on with the clip on the top, it goes (from left to right) REF(A), SIG(B), GND(C), B+V(D).

12-09-2000, 07:38 PM	#3
carter Registered Member Join Date: Dec 2000 Posts: 3	thanks for your reply, but are you sure? according to chilton's it is A= power, B= ground, C= MAF rtn, D=MAF. not knowing what rtn means, nor is it referred to anywhere, nor does anyone else know what it means i am assuming that C= signal ground.where did your info come from? thank you.

12-09-2000, 09:28 PM	#4
97snakedriver Registered Member Join Date: May 1999 Location: Blacksburg, VA Posts: 1,526	Whoops! I listed them backwards: (D)Ref, (C)MAF signal, (B)GND, (A)B+V You should probe across MAF signal and GND to determine if your MAF is working. Should be around 1.5-2 volts at idle. B+V is the battery possative terminal and should be 12V (with respect to GND). MAF rtn is what you are looking for.

12-09-2000, 09:43 PM	#5
carter Registered Member Join Date: Dec 2000 Posts: 3	so what does MAF rtn stand for? are you sure that you dont have C and D mixed up. I believe that C is the signal ground and D is the signal output but i may not be right, that is what i am trying to establish. I am using a 4.6 mass air sensor on another engine as a conversion and need to make sure that it is wired correctly. thank you for your replies.