Engine is running rough

dolomite205 · 06-16-2006

I am getting engine code 66 when engine off. Code 91 when engine is running. Does anybody know what the problem maybe?

speedytang · 06-17-2006

Usually is the MAF when you get a Code 66. What is your idle at and have you checked your your TPS to make sure it is not over .99volt at WOT.

dolomite205 · 06-18-2006

I did re-adjust the TPS senosor voltage to .999 and cleared code 66 by cleaning the MAF sensor and changed the O2 sensors and it code 91. However, I am now getting code 94 and 44. I think the reason for these is because I don't have my smog pump connected.

fastest95stang · 06-18-2006

Quote:

Originally Posted by speedytang

Usually is the MAF when you get a Code 66. What is your idle at and have you checked your your TPS to make sure it is not over .99volt at WOT.

.99 at wot?? I thought it was suppose to be .99 at idle? ill check it out but let me know if im wrong.

dolomite205 · 06-19-2006

At idle the tps was adjusted to .99vdc.

speedytang · 06-20-2006

Truth is you don't need to adjust it at all since it is a big myth anyways that is why they are not slotted during manufacturing. But when this topic starts up you get ever person in the world trying to say your wrong. LOL

meangreen92 · 06-20-2006

Quote:

Originally Posted by dolomite205

I am now getting code 94 and 44. I think the reason for these is because I don't have my smog pump connected.

That's correct. The 41 and 44 are on the right side, and the 91 and 94 are on the left. Maybe your old O2s were so trashed, that they couldn't tell the smogpump was gone.

dolomite205 · 06-20-2006

So, do I need a computer tune now in order to get rid of code 44?