Check Engine

[R Harris]

I have a check engine light. Codes P0171, P0174. 2001 ST Job 1. I have looked for the "elbow" with no luck. Saw where Job 1's don't have the "elbow". Just my luck. Where else might I have a vaccum leak or any other suggestions?

Thanks



Additional Info: Rough idle. Rough starting.

 

[scott r]

You might want to do a quick visual inspection of your vacuum lines/hoses to make sure that there aren't any noticeable defects. I get to do the same thing here as soon as it stops raining. If I find anything, I'll post it in the "update on the supercharged trac" forum feed, but chances are that my problem won't be the same as yours. Good Luck.

 

[Kevin Palmer]

Job 1's have always been an issue with this code. Most use some sort of a spray like a carb cleaner or raw propane and work it around the hoses and intake gaskets. It is the best way I know to find the issue(s).

 

[Kevin Palmer]

Sorry, double post.

 

[EddieS'04]

Another way I have found vaccum leaks...I use a spray bottle of water and spray the vaccum hoses and connections one at a time, with the engine running. The water will be sucked into the engine and it will stumble...

 

[Chris Joyce]

I also have an 01 ST job 1. It's your IAC motor. replace it.

 

[carl strawther]

You could also have a mass air flow sensor out of range