Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

2002 Saturn Vue P0171 & P0174 intermitten ?

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7 years 10 months ago #18419 by rob24chevy
Working on this car again. Couple months ago I had this car in shop for same codes and done COMPLETE intake gasket seal & valve cover gaskets. Now it`s back same codes. Partner erased codes before I could read freeze frame. I have drove it enough to get pending codes but they will not become active. LTFT both banks is staying @ 4 while STFT Is staying around -2 to 4 sometimes jumping quickly to 7 quickly back to 0 -2 I am losing it with this car. lol Any advice? was leaning toward MAF since it seems to be intermittent.

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7 years 10 months ago #18420 by Ben
Your 4 long term is that read at idle or driving?

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7 years 10 months ago - 7 years 10 months ago #18421 by rob24chevy
Replied by rob24chevy on topic 2002 Saturn Vue P0171 & P0174 intermitten ?
Driving and idle to if i remember
Last edit: 7 years 10 months ago by rob24chevy.

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7 years 10 months ago #18434 by Ben
Ok well we need to know when there going out of range check it at cold idle warm idle and driving at different throttle positions


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7 years 10 months ago #18436 by rob24chevy
Replied by rob24chevy on topic Re:2002 Saturn Vue P0171 & P0174 intermitten ?
Have been driving different times for days with Snapon Solus watching the data. Also have Verus Edge was gonna scope the MAF but not sure it would help since it seems intermittent.

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7 years 10 months ago #18439 by Ben
How many grams at idle and how many grams at wide open throttle does the maf read?

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