AudiWorld Forums

A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Can a bad N75 valve cause hesitation under WOT?

Thread Tools
 
Search this Thread
 
Old 02-27-2005, 09:23 AM
  #1  
New Member
Thread Starter
 
Nickoli's Avatar
 
Join Date: Dec 2004
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default
Can a bad N75 valve cause hesitation under WOT?
Nickoli is offline  
Reply Like
Old 02-27-2005, 09:32 AM
  #2  
Member
 
bitjockey (bum)'s Avatar
 
Join Date: Dec 2000
Posts: 14,909
Likes: 0
Received 0 Likes on 0 Posts
Default
Check your DV... but even after replacing mine with a 710N I still get hesitation around 3k
bitjockey (bum) is offline  
Reply Like
Old 02-27-2005, 09:35 AM
  #3  
New Member
Thread Starter
 
Nickoli's Avatar
 
Join Date: Dec 2004
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default
DV already changed w/ 710N... same problem
Nickoli is offline  
Reply Like
Old 02-27-2005, 09:35 AM
  #4  
AudiWorld Senior Member
 
Eddie3dfx's Avatar
 
Join Date: Aug 2004
Posts: 771
Likes: 0
Received 0 Likes on 0 Posts
Default I replaced mine with a 710n as well, but now I'm chipped and thinking to upgrade
There is a little bit of hesitation at around 2.75-3k, could this be from the dv?
Eddie3dfx is offline  
Reply Like
Old 02-27-2005, 09:40 AM
  #5  
AudiWorld Senior Member
 
Eddie3dfx's Avatar
 
Join Date: Aug 2004
Posts: 771
Likes: 0
Received 0 Likes on 0 Posts
Default Whats a good dv to upgrade to, keep in mind
all I'm doing is exhaust/chip.
It's an auto so I want to retain the reliability without damaging the transmission/engine.
Eddie3dfx is offline  
Reply Like
Old 02-27-2005, 09:41 AM
  #6  
New Member
Thread Starter
 
Nickoli's Avatar
 
Join Date: Dec 2004
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default
Anyone have an answer to my original question?
Nickoli is offline  
Reply Like
Old 02-27-2005, 09:49 AM
  #7  
New Member
Thread Starter
 
Nickoli's Avatar
 
Join Date: Dec 2004
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default
do you have hesisation in low RPM at WOT?? i.e. 20MPH in 3rd @ WOT
Nickoli is offline  
Reply Like

Trending Topics

Old 02-27-2005, 10:23 AM
  #8  
Elder Member
 
Audi2ptzero's Avatar
 
Join Date: Sep 2002
Posts: 14,366
Likes: 0
Received 0 Likes on 0 Posts
Default What type are you talking about.
Because at 20 mph in 3rd gear the rpms would be well too low for you to make boost, which means you are just causing the car to lug.
Audi2ptzero is offline  
Reply Like
Old 02-27-2005, 10:29 AM
  #9  
New Member
Thread Starter
 
Nickoli's Avatar
 
Join Date: Dec 2004
Posts: 119
Likes: 0
Received 0 Likes on 0 Posts
Default Well my car is hesitating in situations like this...
If I feather the throttle until about 3K and then punch it I have no hesitation and normal boost. If I just punch it from about 2500-3000 RPM I get hesitation through most of the RPM. I vaged my car about a week ago and got N75 Open Circuit error and cleared it, but it hasnt come back and wsa wondering if a faulty N75 valve could cause hesitiation problems. (I've only heard about surging problems which I dont believe I have) I am on stock ECU right now.
Nickoli is offline  
Reply Like
Old 02-27-2005, 12:35 PM
  #10  
Member
 
Devious27t's Avatar
 
Join Date: Jul 2003
Posts: 4,614
Likes: 0
Received 0 Likes on 0 Posts
Default
yes.
Devious27t is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
EPC Light/Irregular Boost problem completely fixed....WooHoo!
Craigito
A4 (B5 Platform) Discussion
1
02-17-2009 02:20 AM
Why does my wastegate valve duty cycle stay at 0%.....
MYTTS
S4 / RS4 (B5 Platform) Discussion
4
07-16-2006 11:50 AM
Figure this out. I thought my DV went south last week after I got some noises...
Solaris
A4 (B5 Platform) Discussion
15
09-17-2005 01:39 PM
Replaced N75 valve and still go into limp mode pulling on low rpm's. What gives? Wat else could it b
twoquattros
A4 (B6 Platform) Discussion
1
07-29-2005 05:30 PM
what does it mean when yur car is surging? have any of you tried n75 valve yet?
juttin
A4 (B5 Platform) Discussion
4
10-20-2002 08:25 PM
Tags
Back to Subforum
A4 (B5 Platform) Discussion
View Next Unread
how much would a used 2000 a4 silver driver's door cost?




Advanced Search
Quick Reply: Can a bad N75 valve cause hesitation under WOT?


Reply Closed Thread Share

All times are GMT -8. The time now is 08:13 PM.