Acclesation Hesitation Need Help,

Audi Forums Audi Classifieds Photo Gallery Calendars Search Recalls TSB's Contact AF Sponsors
Audi Lineup Audi News Forum FAQ AF Decals Audi Timeslips Register Login

Acclesation Hesitation Need Help,

Printable Version

Audi Forum >> Audi Models >> Audi A6 >> Acclesation Hesitation Need Help,

Page: [1]

Message

<< Older Topic Newer Topic >>

Acclesation Hesitation Need Help, - 10/14/2007 2:58:47 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

Hi,
I own A 99' Audi a6 2.8 liter. 98t miles
I have A Problem With My car the Started for 2 Weeks.ago,
When My Car is hot i Always Have Acclesation hesitates, Missfiring. Idel goes up and down. But no code Service Lite is off. Is Changed Fuelfilter, Cleand the Maf Sensor, Changed Spark Plugs(White so i Think My car running to lean All 6 Spark plugs are White ).After i But New Spark plugs in a runns Fine for a Few Mile The The starts Again so i have to clean the spark plugs again.
How i Can find out What the problem is. Checked already For Vacum Leak But The Looks Fine.

I Hope Somebody Can Help me With my problem.

Thx
Sorry About my bad Engl.

Post #: 1

RE: Acclesation Hesitation Need Help, - 10/14/2007 3:01:05 PM

bleak17

Posts: 14
Joined: 10/14/2007
Status: offline

Maybe check your coil

(in reply to kairo77)

Post #: 2

RE: Acclesation Hesitation Need Help, - 10/14/2007 3:07:52 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

But i Wood have Mssifirng on maybe 1 or 2 zylinder not on all 6 all 6 plugs are white an when i replace the plug the the runns fine for but 100 miles.

thx Torsten

(in reply to bleak17)

Post #: 3

RE: Acclesation Hesitation Need Help, - 10/14/2007 3:08:24 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

How i Can Check The Coil.

Thx Torsten

(in reply to kairo77)

Post #: 4

RE: Acclesation Hesitation Need Help, - 10/14/2007 3:23:36 PM

auditech79

Posts: 4995
Joined: 2/24/2007
From: Sacramento, CA
Status: offline

Don't bother, change the CTS sensor. The CTS can cause everything from a hard start to miss-firing the engine without throwing a CEL. Its cheap and easy to do.

_____________________________

00 A4 1.8T

(in reply to kairo77)

Post #: 5

RE: Acclesation Hesitation Need Help, - 10/14/2007 3:33:30 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

Thx Auditech79,

I Will Try This Tommorw.

When i Drive Like This Can I Damage my Car?
Wher is A Good Place To buy Parte For audi .

Thx Torsten

(in reply to auditech79)

Post #: 6

RE: Acclesation Hesitation Need Help, - 10/14/2007 3:51:37 PM

auditech79

Posts: 4995
Joined: 2/24/2007
From: Sacramento, CA
Status: offline

You can drive it fine, the engine really isn't miss-firing, the faulty signals from the CTS is fooling the engine management into thinking there is a miss so it kinda stumbles a little bit.

_____________________________

00 A4 1.8T

(in reply to kairo77)

Post #: 7

RE: Acclesation Hesitation Need Help, - 10/14/2007 4:07:32 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

Audozone and Advance auto parts don,t have the cts Sensor

thx torsten

(in reply to auditech79)

Post #: 8

RE: Acclesation Hesitation Need Help, - 10/14/2007 4:12:24 PM

auditech79

Posts: 4995
Joined: 2/24/2007
From: Sacramento, CA
Status: offline

www.ecstuning.com
http://www.ecstuning.com/stage/edpd/pagebuild_v2.cgi/?imageID=7532&html=viewimage.html

< Message edited by auditech79 -- 10/14/2007 4:14:17 PM >

_____________________________

00 A4 1.8T

(in reply to kairo77)

Post #: 9

RE: Acclesation Hesitation Need Help, - 10/14/2007 4:24:30 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

thx i will order this sensor

thx

(in reply to auditech79)

Post #: 10

RE: Acclesation Hesitation Need Help, - 10/14/2007 4:31:56 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

where is this Sensor Located. And how i Change this Sensor.

Thx torsten

(in reply to kairo77)

Post #: 11

RE: Acclesation Hesitation Need Help, - 10/14/2007 6:12:09 PM

auditech79

Posts: 4995
Joined: 2/24/2007
From: Sacramento, CA
Status: offline

Behind the engine on the passenger's side, remove the intake hose and look straight down behind the motor and you should see it facing straight upwards towards you.
To change it pull the plastic clip out and pull up on the sensor, you will lose some coolant.
Just make sure not to take off the coolant resivior cap or you will loose most of your coolant.

_____________________________

00 A4 1.8T

(in reply to kairo77)

Post #: 12

RE: Acclesation Hesitation Need Help, - 10/14/2007 7:44:33 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

Thx i will try it.
i hope the will fix the problem.

thx

(in reply to auditech79)

Post #: 13

RE: Acclesation Hesitation Need Help, - 10/15/2007 6:11:54 AM

RIA6

Posts: 142
Joined: 6/25/2006
Status: offline

AUDITECH79

I have these sames symptoms...could this be the same for an 03 3.0? I did a search for the CTS sensor of an 2003 and no parts found.

(in reply to kairo77)

Post #: 14

RE: Acclesation Hesitation Need Help, - 10/15/2007 9:17:00 AM

Poor Person

Posts: 47
Joined: 9/13/2007
Status: offline

Pardon me. I am having a similar problemo with a 2004/V8/ 4.2L. She runs really good, but I do have the sporadic hesitation. I notice that it is more noticeable when I am just cruising, and out of nowhere she stumble and her speech is sssssssssssssssssssluuuuuuuuuuuuuuuuurred...

(in reply to auditech79)

Post #: 15

RE: Acclesation Hesitation Need Help, - 10/15/2007 12:58:08 PM

auditech79

Posts: 4995
Joined: 2/24/2007
From: Sacramento, CA
Status: offline

quote:

ORIGINAL: RIA6

AUDITECH79

I have these sames symptoms...could this be the same for an 03 3.0? I did a search for the CTS sensor of an 2003 and no parts found.

No the 3.0L engines don't really have problems with the CTS sensor, i would clean the throttle body valve with some carb cleaner, and perform a throttle body adaption. How you do a throttle body adaption is to leave the key in the ON position for about 10 minutes and the throttle body should adapt itself.

_____________________________

00 A4 1.8T

(in reply to RIA6)

Post #: 16

RE: Acclesation Hesitation Need Help, - 10/15/2007 1:00:27 PM

auditech79

Posts: 4995
Joined: 2/24/2007
From: Sacramento, CA
Status: offline

quote:

ORIGINAL: Poor Person

Pardon me. I am having a similar problemo with a 2004/V8/ 4.2L. She runs really good, but I do have the sporadic hesitation. I notice that it is more noticeable when I am just cruising, and out of nowhere she stumble and her speech is sssssssssssssssssssluuuuuuuuuuuuuuuuurred...

You need to do the same thing as i said above, but 4.2L engines are prone to carbon build up on the intake valves, so have someone floor the engine and you spray carb cleaner into the intake right at the throttle body until the can is empty. That should get rid of most of the carbon.

_____________________________

00 A4 1.8T

(in reply to Poor Person)

Post #: 17

RE: Acclesation Hesitation Need Help, - 10/15/2007 1:28:04 PM

RIA6

Posts: 142
Joined: 6/25/2006
Status: offline

Auditech79

great thank you. After doing a quick AF/AW/google search i was unable to come up with a location of the throttle valve body.

I am pretty handy with classic cars, but modern cars intimidate me. I don't want to go pulling apart things that don't need to be.

Any help would be much appreciated.

(in reply to auditech79)

Post #: 18

RE: Acclesation Hesitation Need Help, - 10/15/2007 1:32:01 PM

auditech79

Posts: 4995
Joined: 2/24/2007
From: Sacramento, CA
Status: offline

Um it can be a PITA to get to the throttle body on the 3.0L engine, its behind the motor. Follow the hose out of the air box to the back of the engine, you will see a large plastic "air horn" as we call it bolted to the throttle body. If you don't wanna take that off, take off the hose going into the air horn and do the spray carb cleaner into the engine trick. Spray it directly into the air horn so it pulls it into the engine while someone else floors the motor up and down. Once the can is empty, perform the throttle body adaption like i told you.

_____________________________

00 A4 1.8T

(in reply to RIA6)

Post #: 19

RE: Acclesation Hesitation Need Help, - 10/16/2007 5:03:39 AM

RIA6

Posts: 142
Joined: 6/25/2006
Status: offline

Thanks again. I greatly appreciate your time an help.

(in reply to auditech79)

Post #: 20

RE: Acclesation Hesitation Need Help, - 10/19/2007 2:49:46 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

hi Auditech79,

I can't5 find the Coolant Tempatur Senor. Im looked on back Passenderside but this switch looks diverent. i orderd the green senor. but in need the blue sensor.
i go Tomorrow to the audi Dealer hope the have it in stock.

thx kairo

(in reply to RIA6)

Post #: 21

RE: Acclesation Hesitation Need Help, - 10/20/2007 8:05:08 PM

kairo77

Posts: 20
Joined: 6/26/2006
Status: offline

Hi I Switch the Cts(blue). But still the Same.
I bought the USB vag-com and The Show 2 Codes 16684/16688 What u Think What The problem is. The Engiene Still running to Lean. in Think.
Maybe O2 Sensor.

Thx Torsten

(in reply to kairo77)

Post #: 22