Just Finished my upper 60K and now have code 54

[jkichline]

Like the title says. I just finished my upper 60K (thanks SHOBILL1) in my 91 MTX. That definitely fixed the problems I was having. But now the CEL is on and its telling me "Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal high. This is definitely from something that I did as there were no codes when I started this project. I looked over things pretty good and it looks like everything is connected but I'm thinking I must have missed something. Anybody have any ideas? I'm going to continue looking. Thanks.
-Jason

 

[Rockledge]

The sensor at the bottom of the air filter box is the IAT. Is it plugged in?

 

[somedude_001]

The sensor at the bottom of the air filter box is the IAT. Is it plugged in?

damn it you beat me to it. yep thats sounds like the winner for you

 

[jkichline]

You guys both beat me to it. A light bulb went on while I was in the shower thinking about it. I went out and found it. Sure enough that was it. The CEL light is out and I'm good to go. Thanks a lot for your help!