need help with codes on a fox - Northern California Ford Owners

This is topic need help with codes on a fox in forum Tech Talk at Northern California Ford Owners .

To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=022812

Posted by GT302PONY (Member # 6658) on :

i put my 1990 ford mustang gt on a scanner and it gave me code 15 44 33 and i ran a cylinder check to and it said to check cylinder 2and 1 where d i go to get info on the codes thanks

Posted by GT302PONY (Member # 6658) on :

Ttt

Posted by Blind (Member # 3052) on :

EEC-IV Self-Test Codes (Diagnostic Trouble Codes)
http://www.my5oh.com/forum/viewtopic.php?f=36&t=919

EEC-IV Codes Troubleshooting Database
http://www.my5oh.com/forum/viewtopic.php?f=36&t=1326

Posted by Venomousnotch (Member # 8695) on :

Code #15-EEC battery powered keep alive memory (KAM) test failed...

Code #33-EGR valve opening not detected...

Code #44-Thermactor air injection system inoperative...(Right Side)....

Hopefully this will help you out.... [patriot]

Posted by GT302PONY (Member # 6658) on :

code 33 does that mean i need a new egr valve and code 44 is it a problem with the injectors

Posted by Venomousnotch (Member # 8695) on :

quote:
Originally posted by GT302PONY:
code 33 does that mean i need a new egr valve and code 44 is it a problem with the injectors

I would recommend a new egr valve and also the thermactor pipe is the pipe that goes from one head to the other...Its probably clogged with carbon...LMK

Posted by Blind (Member # 3052) on :

for 33 you should clean the EGR and test again, 44 I wouldn't worry about.

I had a 33 on my `91 and replacing the EGR didn't fix it, the EVR was the problem, the EVR is the sensor on the passenger side strut tower, the top of the 2 mounted there, it controls the vacuum signal sent to the EGR telling it to open up.

44 means the tubes are probably clogged up, but again not really a worry as it doesn't effect the CEL and it won't really cause a failed sniffer test.

Posted by SPECIALTY15 (Member # 2978) on :

44 will not set a light only continus memory most foxs have that code due to the tube or heads being glogged with carbon most likely cause the egr aint opening u should test for vacum to it before you go buying new parts hook a vacum guage to the vacume line and run it out side of the hood near windsheild i normaly put it under the wiper.. shut hood and drive vacume should be present under load...if so then change vavle if not trace vacume line down to switch on strut tower and back up to intake if good replace vacume switch

Posted by GT302PONY (Member # 6658) on :

I also checked it with scanner and ran a test that checks the balance in the cylinders and it told me to check cylinder 1 and 2

Fueled by Ford Mustang Owners
on CaliforniaFords.com