More codes... help? - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 03-23-2014, 06:10 PM   #1
Registered Member
Regular
 
antnvlz1294's Avatar
 
Join Date: Nov 2013
Location: Mount Laurel
Region: New Jersey
Posts: 212
Unhappy More codes... help?

I have an 88 mustang 5.0 lx. I previously had a code which was stating that my right side O2 sensor was running lean. I checked and the sensor was wiggling around. Now today (a few weeks later) I went to autozone and bought two of the same Bosch Oxygen sensors (both were same kind and model number) for 39.99 to install on my mustang. I put both of them in with the battery cables off, and decided to run my coder to make sure that the previous code went away. My car was warmed up when I did the koer test and I code two codes.

Code 44: problems in thermactor air control system

and

Code 94: thermactor air system - problem on the right bank (passenger Side). or, Transaxle problem - shift solenoid 1 (ss1) circuit failure.

What exactly is my issue here, what do I have to replace?
antnvlz1294 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-23-2014, 07:55 PM   #2
Registered Member
Regular
 
ALMOST STOCK's Avatar
 
Join Date: Jul 2012
Location: Prunedale
Region: California
Posts: 366
Code 44 RH side air not functioning.
Code 94 LH side air not functioning.



If you have eliminated your TAB and TAD solenoids you will get those codes.

The computer uses the change in the O2 sensor readings to detect operation of the Thermactor control valves. When the dump valve opens, it reduces the O2 readings in the exhaust system. Then it closes the dump valve and the O2 readings increase. By toggling the dump valve (TAB), the computer tests for the 44/94 codes.

Failure mode is usually due to a clogged air crossover tube, where one or both sides of the tube clog with carbon. The air crossover tube mounts on the back of the cylinder heads and supplies air to each of the Thermactor air passages cast into the cylinder heads. When the heads do not get the proper air delivery, they set codes 44 & 94, depending on which passage is clogged. It is possible to get both 44 & 94, which would suggest that the air pump or control valves are not working correctly, or the crossover tube is full of carbon or missing.
ALMOST STOCK is offline   Reply With Quote
Old 03-23-2014, 08:07 PM   #3
Registered Member
Regular
 
antnvlz1294's Avatar
 
Join Date: Nov 2013
Location: Mount Laurel
Region: New Jersey
Posts: 212
Quote:
Originally Posted by ALMOST STOCK View Post
Code 44 RH side air not functioning.
Code 94 LH side air not functioning.



If you have eliminated your TAB and TAD solenoids you will get those codes.

The computer uses the change in the O2 sensor readings to detect operation of the Thermactor control valves. When the dump valve opens, it reduces the O2 readings in the exhaust system. Then it closes the dump valve and the O2 readings increase. By toggling the dump valve (TAB), the computer tests for the 44/94 codes.

Failure mode is usually due to a clogged air crossover tube, where one or both sides of the tube clog with carbon. The air crossover tube mounts on the back of the cylinder heads and supplies air to each of the Thermactor air passages cast into the cylinder heads. When the heads do not get the proper air delivery, they set codes 44 & 94, depending on which passage is clogged. It is possible to get both 44 & 94, which would suggest that the air pump or control valves are not working correctly, or the crossover tube is full of carbon or missing.
So I don't even know what tab or tad solenoids are? As for fixing this issue what do I clean or replace? You said something about tubing getting clogged? What exactly are you referring to? I don't understand what I have to do?
antnvlz1294 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-23-2014, 08:46 PM   #4
Registered Member
Regular
 
ALMOST STOCK's Avatar
 
Join Date: Jul 2012
Location: Prunedale
Region: California
Posts: 366
Tab and Tad solenoids are on the back side of your passenger side tower strut

The cross over tube is attached to the back of the heads and a good possibility that it could be clogged with carbon.
What I did to clean my cross over tube was to run a semi- stiff wire through one end of the tub and out other. If you see a lot of carbon come out of the tube you could use something like carburetor cleaner poured in the tube and let it sit overnight.

More than likely the cross over tube is stopping you from being able to mount your ground cable to the engine block because it's in the way.

You'll need to remover 2 bolts to and disconnect the to remove the cross over tube.
ALMOST STOCK is offline   Reply With Quote
Old 03-23-2014, 08:55 PM   #5
Registered Member
Regular
 
antnvlz1294's Avatar
 
Join Date: Nov 2013
Location: Mount Laurel
Region: New Jersey
Posts: 212
Quote:
Originally Posted by ALMOST STOCK View Post
Tab and Tad solenoids are on the back side of your passenger side tower strut

The cross over tube is attached to the back of the heads and a good possibility that it could be clogged with carbon.
What I did to clean my cross over tube was to run a semi- stiff wire through one end of the tub and out other. If you see a lot of carbon come out of the tube you could use something like carburetor cleaner poured in the tube and let it sit overnight.

More than likely the cross over tube is stopping you from being able to mount your ground cable to the engine block because it's in the way.

You'll need to remover 2 bolts to and disconnect the to remove the cross over tube.
So Disconnect the tube run a thick wire through it and spray/soak the inside with carb cleaner, leave for a night and then put it on?
antnvlz1294 is offline   Reply With Quote
Old 03-23-2014, 09:06 PM   #6
Registered Member
Regular
 
ALMOST STOCK's Avatar
 
Join Date: Jul 2012
Location: Prunedale
Region: California
Posts: 366
Quote:
Originally Posted by antnvlz1294 View Post
So Disconnect the tube run a thick wire through it and spray/soak the inside with carb cleaner, leave for a night and then put it on?
That's it........You want to clean the tube so that there is no carbon blockage is what you're trying accomplish.
ALMOST STOCK is offline   Reply With Quote
Old 03-23-2014, 09:11 PM   #7
Registered Member
Regular
 
antnvlz1294's Avatar
 
Join Date: Nov 2013
Location: Mount Laurel
Region: New Jersey
Posts: 212
Quote:
Originally Posted by ALMOST STOCK View Post
That's it........You want to clean the tube so that there is no carbon blockage is what you're trying accomplish.
Alright I'll post what happens in a few days.
antnvlz1294 is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT

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 On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help please!!! Eng codes!! Dgerow12 Pre-2005 V6 Mustang 7 09-13-2011 05:07 PM
My gt is throwin codes help Jamesgt08 1996-2004 Mustang GT 4 03-26-2011 12:03 AM
2 Codes Need Help tigerfan2771 Pre-2005 V6 Mustang 12 04-05-2010 10:42 PM
Need Help: Codes P0135 and P0155 96Mustang0250 Pre-2005 V6 Mustang 7 01-27-2010 05:11 PM
help reading gear codes! Sublime782 Pre-2005 V6 Mustang 9 05-26-2005 11:29 PM

» Members Mustangs

Spectre

bigmac3

JM

blue
Add your Mustang
» Like Us On Facebook



04:46 AM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.