Need help, Car jerks on acceleration - AudiForums.com



B6 Models Please discuss all 2002 - 2005 B6 A4 topics here...

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-04-2011, 01:30 PM
1st Gear
Thread Starter
 
Join Date: Mar 2011
Location: Lancaster, CA
Posts: 11
Default Need help, Car jerks on acceleration

I have no idea what this could be. When i take off from a stoplight my car starts jerking, loses power, but only in 1st gear or 2nd gear. No lights pop up on the dash. At first i thought it could be the ignition coils going out again, but i just had them replaced abut a month or 2 ago (around 6,000 miles ago). Could the coils be going out already? The jerking happens when im going around 25-30mph, but after i go faster the jerking stops, and the car is smooth. Has anyone had this problem before? Btw i have a 2003 A4 1.8t fwd with 82,000miles. Someone mentioned to me that there could be a leak in the turbo or vacuum? But i don't know much about that.
Reply With Quote
  #2  
Old 07-07-2011, 06:08 PM
1st Gear
 
Join Date: Mar 2010
Posts: 5
Default Acceleration problem ...

i have the same problem in my 1997 A4 1.8L no turbo no nothing just 1.8L. when i accelerate it feels like the cars is dying then it suddenly speeds up and accelerates. i scanned it so many times but nothing!! even on the dash board there are no sensor lights signaling anything!! the rpm is also normal !! and SOMETIMES when i reach speeds 60-80 km/h it feels like the engine is cutting off and on quickly example: like when u run out of gas. And always when i want to to turn the car on i have to press on the gas peddle to start.


PLZ HELP ANY IDEAS??????
Reply With Quote
  #3  
Old 07-08-2011, 09:34 AM
jdahlen24's Avatar
2nd Gear
 
Join Date: Nov 2010
Location: Rochester, MN
Posts: 695
Default

Clogged fuel filter? That's a relatively cheap item to replace and see if that helps.
Reply With Quote
  #4  
Old 07-08-2011, 11:46 AM
pa4ul's Avatar
4th Gear
 
Join Date: May 2007
Posts: 3,413
Default

do u hear a whine from your rear seat. Thats a sign of filter pump going bad. I would visually inspect the vac lines first to see if their might be a small crack somewhere in a line.
Reply With Quote
  #5  
Old 07-08-2011, 05:36 PM
1st Gear
 
Join Date: Dec 2010
Location: San Marcos, CA
Posts: 11
Default

I'm not sure if its the same problem as i had butttttt... when i would accelerate around 2-3000 rpms my car would hesitate a bit, kind of like you are saying. I got my timing belt changed, water pump, thermostat etc, everything that goes along with a timing belt change out and i have yet to encounter this problem again. I wouldn't say do something drastic like that first off, but 85,000+ is pushing for a stock TB.
Reply With Quote
  #6  
Old 07-08-2011, 06:56 PM
1st Gear
 
Join Date: May 2011
Location: North Dallas,TX
Posts: 25
Default

same problem. tons of $$ into new parts..MAP Sensor, coils, plugs, MAFs(3), fuel filter, timing belt, water pump, tensioner, ECT sensor, etc. them turbo went out. time to upgrade for me. maybe this was the problem from the beginning for me. with MAF plugged in i could not get above 3k rpms...with it unplugged it runs (decent) but does not feel like it should. says it boosts to 13psi...and eventually it will drop into safe mode... ran it like that for about 3 months.,.then turbo went bye bye
Reply With Quote
  #7  
Old 07-09-2011, 01:32 PM
1st Gear
Thread Starter
 
Join Date: Mar 2011
Location: Lancaster, CA
Posts: 11
Default

yeah Ive been hearing a whining noise for a few weeks. I just bought the fuel filter. hopefully that fixes it. ill let you know if it does or not. thanks for the help guys.
Reply With Quote
  #8  
Old 07-16-2011, 08:18 AM
1st Gear
 
Join Date: Mar 2010
Posts: 5
Default

Quote:
Originally Posted by ChrisJz View Post
yeah Ive been hearing a whining noise for a few weeks. I just bought the fuel filter. hopefully that fixes it. ill let you know if it does or not. thanks for the help guys.
plz do tell if it works .... tk for the posts everyone...
Reply With Quote
  #9  
Old 07-17-2011, 10:09 PM
1st Gear
Thread Starter
 
Join Date: Mar 2011
Location: Lancaster, CA
Posts: 11
Default

So i installed the new fuel filter and the problem is still there. Ive also heard that the MAF sensor could use a cleaning, so i took it out and cleaned it. The car has more power but the jerking is still there when accelerating. I can't see any cracks or leaks either. Guess ill be taking it to the dealership and have them look at it.
Reply With Quote
  #10  
Old 07-19-2011, 11:21 AM
pa4ul's Avatar
4th Gear
 
Join Date: May 2007
Posts: 3,413
Default

take ur car to autozone and have it scanned. That might give someone a better idea of whats not working right on ur car. Cuz autozone is free to scan and dealerships arent.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
My Audi A6 jerks at low gears and has delayed acceleration dc_la Audi A6 3 12-14-2013 07:21 PM
99 AEB Jerks in boost NO CEL. lanoiA4 B5 Models 6 08-18-2012 02:10 AM
CAR JERKS? helpp jasko315 Audi TT 2 04-20-2011 10:11 AM
Car jerks on take off... wpv123 Audi A4 11 07-21-2007 08:29 AM
jerks PandaXpress Off Topic 29 04-05-2007 02:10 PM


Tags
05, 2004, a4, audi, belt, bucks, car, change, changed, dash, gear, gears, jerks, light, stop, tensioner, timing

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Advertising
Featured Sponsors

All times are GMT -4. The time now is 02:04 AM.


© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.