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I have an air I take code along with a MAF/MAP sensor code
I have an air I take code along with a MAF/MAP sensor code causing the car to run lean in banks 1&2. When I unplug the MAF and the MAP sensors the car runs and files as it always has. What could be th… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
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Where & what do I check for code PO171 TO MUCH AIR NOT
Where & what do I check for code PO171 TO MUCH AIR NOT ENOUGH GAS . & PO174 LEAN ON 1998 CADILLAC DEVILLE… read more
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I have a 2005 Cadillac STS 4.6 L V8. The check engine light
Hi, I have a 2005 Cadillac STS 4.6 L V8. The check engine light is on with P0171 and p0174. I tried clearing them, but they come back. The short-term fuel trim on both Banks is -0.78, it is steady at … read more
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2008 Cadillac sts 4.6L codes P0174, fuel trim lean bank 2
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Have P0171 and P0174 Codes...Car also has a crazy lunging
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Cadillac DeVille: , I have a 2000 Cadillac DeVille with the
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Pete
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Cadillac Deville DTS: I have a 2003 Cadillac Deville DTS and
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pm151: also surges at stop lights if that helps..po171
getting a po151 code car also surges at stop lights if that helps if this is connected also getting a po171 and 174 if thats also connected… read more
Paul M ASE Master
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2004 Cadillac DTS: 25,000 miles..rough..service engine light came on
I have a 2004 Cadillac DTS (4.6L Northstar) with 25,000 miles. Other than maintenance (lube, oil) it has never required any shop work. A few months ago the engine idled rough and the "service engine" … read more
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2003 Cadillac: recall..the replacement of fuel tank presure..PO171
I was told there was recall on 2003 Cadillac for the replacement of fuel tank presure sensor. I called Cadillac they said my car was replaced. A retired Cadillac person said if I had a problem with th… read more
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2000 Cadillac: northstar..rough..idels codes p300 po171
I have a 2000 Cadillac with northstar engine it idols rough and sounds like it loops only when idels codes po300 po171 po174… read more
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2002 cadillac deville: coil pack..vacuum leak..is still runing..po171
I replace bank one and two sensors, also front and back coil pack, machine check for vacuum leak. My 2002 cadillac deville is still runing lean. The lean codes are po171 and po174. My problems begin w… read more
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2001 cadillac deville: smooth..DTC PO171..manifold..check engine light
i have a 2001 cadillac deville and just spent 1540.00 at the dealer ship cause my car idol wrong and when i drive it smooth for a little while the it will start idoling wrong again almost like losing … read more
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Cadillac deville dts: the auto scanner is pickig..cylinder misfire
I have a cadilac deville dts 2003 and the auto scanner is pickig up this code p0300 and it says random / multiple cylinder misfire detected what can I do or what is wrong wit it.… read more
BOBBYSS
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my 2003 deville 4.6 idles idles very high especially in park.
my 2003 deville 4.6 idles idles very high especially in park. It also runs very rough when idle or at driving speeds. This problem became worse once I changed my plugs. I get these OBD codes PO101 cur… read more
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Engin..i changed plugs, changed one side of core pack
I can get the check engin light to go off. its saying multiple cylinder misfire. i changed plugs, changed one side of core pack. what else shoul i check. i looked for air leak and i dont see none.… read more
goodwrench9124
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98 cadillac deville: 2 days ago check engine light came..p0171..p0174
Hello i own a 98 cadilac deville and 2 days ago check engine light came on with codes p0171, p0174 and po300 so i had the cleared , in the mirning came back on the veh chegged a little and the same co… read more
Dan
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2001 DTS: check engine light..the Mass Air flow Sensor..light came
My 2001 DTS has the check engine light on and the code says it is running lean. I think it is a P1173 code. I replaced the Mass Air flow Sensor, but the light came on again.… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
19,206 satisfied customers
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Meet the Experts:

Jerry Newton

Jerry Newton

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Gm Tech (Cam)

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Chris (aka- Moose)

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George H.

George H.

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Don - Mo Lurch

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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