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Need to get to b1s1 (pre-cat) sensor on 2005 audi a4 3.0.
Need to get to b1s1 (pre-cat) sensor on 2005 audi a4 3.0 … read more
vwtech0405
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2009 A4 2.0t, Rough, low idle, misfires. Runs fine above
2009 A4 2.0t, Rough, low idle, misfires. Runs fine above 2000 rpm. Intake manifold was replaced and PCV has been replaced. N obvious vacuum leaks. When I disconnect the intake hose to the PCV and plug… read more
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2006 audi a4 2.0T, have had a P0171 lean on idle code i have
2006 audi a4 2.0T , have had a P0171 lean on idle code i have been chasing , replaced PCV , O2 sensor ond purge valve with no luck . Am thinking the intake runner flap is damaged / dislodged from the … read more
gomi_otaku
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Audi A4 Quattro: o have a 2001 audi a4 1.8t the check
Hello o have a 2001 audi a4 1.8t the check engine light came on with miss fires all cylinders p0507 p0171 and idles like crap. So far I've changed in the last couple months throttle body, plugs, crank… read more
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gomi_otaku
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Audi A4 Quattro Cabriolet: I have 8 fault codes P0300, + 4
I have 8 fault codes P0300, + 4 cylinders mist fire, P1136, P1138 + P0507 2004 Audi A4 Quattro 3.0L AVK soon I cleared the codes I have some motor rattles ! I changed the air pump, and the solenoid pu… read more
Chris (aka - Moose)
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Audi A3: I have an 06 A3 2.0t with a P2187 and a slightly rough
I have an 06 A3 2.0t with a P2187 and a slightly rough idle. Pcv assembly is new and you cannot blow through the check valve into the valve cover. Have smoked the induction system and found no externa… read more
gomi_otaku
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Audi A4 Quattro: 2003 B6 A4 3.0 Quattro Tiptronic with 86,000
2003 B6 A4 3.0 Quattro Tiptronic with 86,000 miles. Rough and sporadic idle which smooths out to normal when the oil filler cap is removed. No check engine light. Lately, smells like rotten eggs outsi… read more
AudiDoc
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Audi A4 Quattro: Hi, I am throwing a p0171 code on my 2002
Hi, I am throwing a p0171 code on my 2002 audi a4 1.8 t. I originally thought it was a vacuum leak so I smoke tested the car and pressure tested the pcv system as well as checked for a boost leak. Whe… read more
vwtech0405
vwtech0405
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Audi A4: I have an Audi a4 1.8l turbo. 2002. A week ago I
I have an Audi a4 1.8l turbo. 2002. A week ago I had a new turbo installed, a valve job, and the head machined this all due to. due to a really bad oil leak, and smoking. car runs great, but the probl… read more
iauto8
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Audi TT Quattro: I nave a 2002 Audi TT ALMS QUATTRO AMU engine
I nave a 2002 Audi TT ALMS QUATTRO AMU engine and it keeps throwing a CODE PO171B - I have taken it to a mechanic and have replaced the MAF sensor and plug, the O2 sensor, checked the fuel filer and i… read more
iauto8
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2003 A4: vacuum pump..Hatchback..run rough..fuse out somewhere
I replaced a vacuum pump after my 2003 A4 Hatchback after it started to run rough. I think there is a fuse out somewhere. I cant get power to the new part. I cant get a voltage reading or continuity w… read more
gomi_otaku
gomi_otaku
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Audi TT: mile engine starts but seems to have a misfire..cylinders
Audi TT 3.2 Start from cold ok switch of after 1/4 of mile engine starts but seems to have a misfire on three cylinders. ok high revs but pulling away impossible (auto) temp sensor seems ok multiple m… read more
janoboy
janoboy
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2000 Audi A4 quattro: 1.8T..hesitation..rough idle..110,000 miles
I have a 2000 Audi A4 quatro 1.8T which has a hesitation and rough idle problem. The car has 110,000 miles on it. It has had this issue since I bought it 2 or 3 years ago. I have take it to the Audi d… read more
AUDI TECH RS4
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99 audi A4 quatro, 2.8, auto, Codes P1196 and P1129. The
99 audi A4 quatro, 2.8, auto, Codes P1196 and P1129. The car sat for a year. changed plugs and gas and started up but surges up and down rapidly above 1200 rpm and will not idle if I take my foot off … read more
Dan
Dan
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Audi A4 Quattro: 3.0L..a PCV Valve Assembly 06C..Lexus..idles..shakes
The Audi service advisor says my Audi A4 Quattro 3.0L needs a PCV Valve Assembly 06C 103 245. Another Audi mechanic who now works for Lexus says I should unplug the Mass Airflow Sensor and if the symp… read more
AudiGuru
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2004 a4 quattro: 1.8 litre and the MIL came..factory warranty..rough
I have an 2004 a4 quatro 1.8 litre and the MIL came on. Brought it into dealer to check because 94k is out of factory warranty. Complain is rough at idle. Diagnostic according to the audi shop is to c… read more
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Davie
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Meet the Experts:

AudiDoc

AudiDoc

Independent Audi Shop Owner

1,709 satisfied customers

I've been working on Audis since I was 18 and own an independent Audi repair and performance shop

Matt

Matt

Engineer

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Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing

Chris (aka - Moose)

Chris (aka - Moose)

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16 years of experience

Mike Kelly

Mike Kelly

Audi Mechanic

264 satisfied customers

17 years experience as a auto mechanic, foreign and domestic.5 years running my own repair business.

Tim Mohr

Tim Mohr

ASE MASTER TECH

250 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Michael Miller

Michael Miller

ASE Certified Technician

241 satisfied customers

ASE Master Technician. Audi certified, including R8 and TDI (clean diesel).

Quattro King

Quattro King

Technician

140 satisfied customers

ASE Master Certified, 20+ yrs European experience

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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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