Help! Which wire on the MAF harness is sensor ground? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


ECUs and Tuning Discuss Engine Management, Tuning, & Programming

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 04-25-2009, 05:02 PM   #1
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Apr 2006
Location: Northern Michigan
Posts: 898
Total Cats: 0
Default Help! Which wire on the MAF harness is sensor ground?

I am ready to start it up with my tuner and of course I screwed up the wiring and grounded my MAP to the chasis ground at the ecu instead of sensor ground. Which wire on the 90 - 93 MAF harness is the sensor ground?

The 94+ is black with a blue stripe but I dont have a wire like that.
rotaryjunky is offline   Reply With Quote
Old 04-25-2009, 06:04 PM   #2
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Apr 2006
Location: Northern Michigan
Posts: 898
Total Cats: 0
Default

I stupidly wired the Air intake temp sensor ground to chassis ground also but it is reading the correct temperature. It just goes to show that just like parenting, anyone can do it even if they probably shouldn't...
rotaryjunky is offline   Reply With Quote
Old 04-25-2009, 06:29 PM   #3
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Apr 2006
Location: Northern Michigan
Posts: 898
Total Cats: 0
Default

Does is matter which Sensor ground the Air intake temperature sensor and MAP sensor are hooked up to? 2C or 2D?
rotaryjunky is offline   Reply With Quote
Old 04-26-2009, 08:55 PM   #4
Senior Member
Thread Starter
iTrader: (3)
 
Join Date: Apr 2006
Location: Northern Michigan
Posts: 898
Total Cats: 0
Default

I checked the MAF harness and found ;

2P, ?, All four ecu grounds (2C 2D 2A 2B), ?, sensor ground 2D, Chassis ground 2A, 2A

I hooked the AEM map sensor to sensor ground 2D and it reads 1.61 volts at "0" psi, no vacuum, which is what it should be.

Yeah. For now.
rotaryjunky is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM
wiring wideband ground to battery terminal btabor ECUs and Tuning 10 09-28-2015 06:33 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:11 AM.