Code 44 - help and a few other questions
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Joined: Aug 2000
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From: Richmond, CA
Code 44 - help and a few other questions
I had also posted this message in the computer tuning section as well. Mainley because at some point I will put a chip or programmer in. This problem that I am having is starting to be very frustrating.
I keep getting code 44 durring the KOER test. One of the definitions in the manual states that the Oxygen sensor signal indicates Rich - Excessive fuel, Restrictive air intake - or - Inoperative Thermactor System. And another one states Thermactor air system fault.
I had just replaced the o2 sensor last night hopeing that this would get rid of this code. But it did not. EGR valve is two years old and not even 6,000 miles on it. The engine itself has about 4,500 miles on it now.
The engine runs fine and it drives fine. Until I try to get it above 3,000 rpms. At that point the engine starts spuddering, like it's sucking air or missing. I have replaced the fuel pump, fuel filter, fuel regulator, MAP sensor, ignition module, distributor, and the O2 sensor.
I have been using 87 octane fuel. But now, with all the mods that I have done already to my rig,
1) Should I switch to 91 octane?
2) Should I get a new computer?
3) is there something that I may be missing?
4) Or Should I add a chip or programmer?
Basically the only 3 mods that I haven't done yet is a set of headers, a chip or programmer, and a complete ignition upgrade(I do have the MSD coil, though). I have done pretty much every thing else. I installed Edelbrock intake manifols and throttle body, K & N air filter system, a mild cam, rebuilt motor bored .30 over, Flowmaster after cat with dual output, rebuilt the tranny twice, rebuilt the transfer case, and rebuilt both deferrentials with limited slip and 4.10 gear ratio. This weekend I am going to try to see if there is a low voltage in the wiring for the fuel pump sytem. At one point, last week, I did pull a code of 95 which is Fuel pump secondary circuit fault. But this code has not come up again since. The fuel pump is new. Just replaced it when I started to have this problem.
Any help or suggestions would be greatly apreciated.
Thanks
Kimball
I keep getting code 44 durring the KOER test. One of the definitions in the manual states that the Oxygen sensor signal indicates Rich - Excessive fuel, Restrictive air intake - or - Inoperative Thermactor System. And another one states Thermactor air system fault.
I had just replaced the o2 sensor last night hopeing that this would get rid of this code. But it did not. EGR valve is two years old and not even 6,000 miles on it. The engine itself has about 4,500 miles on it now.
The engine runs fine and it drives fine. Until I try to get it above 3,000 rpms. At that point the engine starts spuddering, like it's sucking air or missing. I have replaced the fuel pump, fuel filter, fuel regulator, MAP sensor, ignition module, distributor, and the O2 sensor.
I have been using 87 octane fuel. But now, with all the mods that I have done already to my rig,
1) Should I switch to 91 octane?
2) Should I get a new computer?
3) is there something that I may be missing?
4) Or Should I add a chip or programmer?
Basically the only 3 mods that I haven't done yet is a set of headers, a chip or programmer, and a complete ignition upgrade(I do have the MSD coil, though). I have done pretty much every thing else. I installed Edelbrock intake manifols and throttle body, K & N air filter system, a mild cam, rebuilt motor bored .30 over, Flowmaster after cat with dual output, rebuilt the tranny twice, rebuilt the transfer case, and rebuilt both deferrentials with limited slip and 4.10 gear ratio. This weekend I am going to try to see if there is a low voltage in the wiring for the fuel pump sytem. At one point, last week, I did pull a code of 95 which is Fuel pump secondary circuit fault. But this code has not come up again since. The fuel pump is new. Just replaced it when I started to have this problem.
Any help or suggestions would be greatly apreciated.
Thanks
Kimball
