C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Wiring diagram for 5-wire MAF?

Thread Tools
 
Search this Thread
 
Old 02-01-2010, 08:25 AM
  #1  
civlant
Racer
Thread Starter
 
civlant's Avatar
 
Member Since: Feb 2008
Location: Topeka KS
Posts: 410
Likes: 0
Received 0 Likes on 0 Posts
Default Wiring diagram for 5-wire MAF?

Anyone have a wiring diagram for the 5-wire MAF? I'm running an open loop speed density tune and I would like to remove my MAF completely but to do that I need to put in a seperate IAT sensor. Not sure which of the 5 wires actually go to the IAT inside my MAF right now. Any help would be much appreciated! Also anyone know where I can get an IAT sensor for cheap?
Old 02-01-2010, 10:57 AM
  #2  
clemsondave
Drifting
 
clemsondave's Avatar
 
Member Since: Mar 2006
Location: Richmond VA
Posts: 1,847
Likes: 0
Received 3 Likes on 2 Posts

Default

25036751 AC Delco IAT Sensor (threaded - you will need to weld in a bung for this one, which is what I did)
12102620 AC Delco Wire Pigtail

Name:  maf_pinout.jpg
Views: 44013
Size:  42.1 KB
Old 02-01-2010, 05:21 PM
  #3  
civlant
Racer
Thread Starter
 
civlant's Avatar
 
Member Since: Feb 2008
Location: Topeka KS
Posts: 410
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks Dave! I'm assuming the new 2-wire connector just uses the IAT signal and ground?

Last edited by civlant; 02-01-2010 at 05:28 PM.
Old 02-01-2010, 06:09 PM
  #4  
Y2Kvert4me
Race Director
 
Y2Kvert4me's Avatar
 
Member Since: Oct 2002
Location: Gone
Posts: 16,477
Likes: 0
Received 18 Likes on 15 Posts
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
Default

Purple and tan wires are IAT.

Purple is 5v reference, tan is signal to PCM. It doesn't matter which is which when splicing in the new sensor connector, as the sensor is not polarity sensitive.

Old 07-20-2015, 05:20 PM
  #5  
Ksths2
Pro
 
Ksths2's Avatar
 
Member Since: Jun 2008
Location: Oskaloosa Iowa
Posts: 575
Likes: 0
Received 9 Likes on 6 Posts
Default

Bringing an old thread back to life, this is great info. One question, I'm doing this exact thing right now can since I'm only needing the Purple/Tan wires what do I do with the others? Can I just coil them up back at the firewall?
Old 12-28-2015, 07:56 PM
  #6  
James Boomer Greene
1st Gear
 
James Boomer Greene's Avatar
 
Member Since: Dec 2015
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default 5 wire maf

I have a 6.0 ls1 in my 71impala... I got a maf from a 2004 Cadillac Deville that's actually the same as the one I need I cut off the plug with it but it is a 5 wire plug I do know that the pink is for ignition, the two black are for ground and the yellow for the maf to the Pcm but I don't know where the tan wire goes can ANYONE HELP

Get notified of new replies

To Wiring diagram for 5-wire MAF?




Quick Reply: Wiring diagram for 5-wire MAF?



All times are GMT -4. The time now is 09:28 PM.