S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Surging and Hesitation PLEASE HELP!

Thread Tools
 
Search this Thread
 
Old 07-24-2009, 05:50 AM
  #11  
AudiWorld Member
 
CTAudiDriver's Avatar
 
Join Date: Feb 2009
Posts: 137
Likes: 0
Received 0 Likes on 0 Posts
Default

As for a shop in the washinton/VA area, put a post up in the regional forum, I'm sure someone there will help you out.

Take a look at the sensor first, if thats not it, it sounds like you have a boost leak which is harder to diagnose.

This is how you do a pressure test, the write up is for a allroad which has the same motor
http://www.allroadfaq.com/downloads/...re_testing.pdf
Old 07-24-2009, 07:28 AM
  #12  
AudiWorld Member
Thread Starter
 
Dookie's Avatar
 
Join Date: Jun 2007
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Default Thank you all for the help

I have a little under 100k miles now. Chip was mapped by AutoThority. I have never seen the temp guage do anything out of the ordinary. I will start with replacing the temp. PITA pain in the ***, i like and don't feel so stupid now. Another question for all of you whop have chips, What kinda of PSI are you getting at full throttle. How much is too much. Am getting probaly a little more than double of the factory setting. I dont want to kill my stripper. Thank you all again!
Old 07-24-2009, 07:54 AM
  #13  
AudiWorld Member
 
CTAudiDriver's Avatar
 
Join Date: Feb 2009
Posts: 137
Likes: 0
Received 0 Likes on 0 Posts
Default No prob, let us know what you find

most K03 chips boost to 1 bar ~ 15 psi
Old 07-24-2009, 01:23 PM
  #14  
AudiWorld Member
 
shawnoc2003's Avatar
 
Join Date: Aug 2007
Location: Michigan
Posts: 375
Likes: 0
Received 0 Likes on 0 Posts
Default

For what its worth, mine was chipped (GIAC) at 101,000 and shortly thereafter it started to fall on its face under full load. Turns out the spark plugs were the original plugs and the gap had eroded to ~0.080". Everything worked much better with new plugs. (Still get the occasional misfire detection, but seems to run fine except for a part throttle tip in issues which I'm assuming is the chip)

Don't want to over simplify, but if the plugs haven't been changed, you may want to start there. Clear all your codes and see what comes back.
Old 07-24-2009, 08:25 PM
  #15  
AudiWorld Member
Thread Starter
 
Dookie's Avatar
 
Join Date: Jun 2007
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Default

Sensor and pressure test thread links are way helpful. I haven't fully read though the pressure test yet but have a question about the temp sensor installation. When finally installing the new sensor after cleaning the receptacle that the sensor fits in he notes to add a little water do avoid trapping an air bubble. It doesn't look like the sensor actually touches any coolant but sits in a bowl shaped (receptacle) that is not conformed to the nipple shaped brass tip of the sensor. Would also figure the sensor and receptacle getting some kinda hot would vaporize the water and create unwanted pressure and or moisture within the O-ring sealed sensor tip receptacle area.? Gonna see if I have the older black or new green sensor. Looks like a bitch to get to and out but for 15 bucks and a couple hours I'll try this one first. Many thanx
Old 07-25-2009, 08:02 PM
  #16  
AudiWorld Member
 
CTAudiDriver's Avatar
 
Join Date: Feb 2009
Posts: 137
Likes: 0
Received 0 Likes on 0 Posts
Default

Its actually really easy to do, just take the accordian hose part of the intake off, slide the clip out, remove and replace the sensor.

Should only take 20 minutes tops. just pour a little water water in if youd like, i dont think its critical and only the nipple at the end of the sensor is acutually in the coolant when installed.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Josh/AWE
Audi A3 / S3 / RS 3 MKII
5
09-26-2019 06:21 PM
Hours of Service
New Member Welcome Area
2
06-29-2017 05:07 PM
WillSav
Parts For Sale - Archive (NO NEW POSTS HERE)
1
03-19-2016 04:44 PM
acryan7377
Q5/SQ5 MKI (8R) Discussion
20
10-04-2015 08:02 AM
fixmya6
A6 / S6 (C6 Platform) Discussion
4
10-01-2015 02:00 PM



Quick Reply: Surging and Hesitation PLEASE HELP!



All times are GMT -8. The time now is 03:11 PM.