90' V8Q surging under acceleration...

Thread Tools
 
Search this Thread
 
Old 10-31-2009, 08:05 AM
  #31  
AudiWorld Newcomer
 
Bruravah73's Avatar
 
Join Date: Oct 2009
Location: United States
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Default 90 V8Q surging under acceleration

uhh that plug is for when you are checking the level of the fluid, it is not to be any higher then that level of the plug. if your car is running it will just spit it out all over you... check your manual
Old 10-31-2009, 01:10 PM
  #32  
AudiWorld Member
 
Vilpo's Avatar
 
Join Date: Aug 2009
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Bruravah73
uhh that plug is for when you are checking the level of the fluid, it is not to be any higher then that level of the plug. if your car is running it will just spit it out all over you... check your manual
I'm sorry, but what plug are you talking about?
Old 11-01-2009, 06:16 AM
  #33  
AudiWorld Super User
 
Kneale Brownson's Avatar
 
Join Date: Apr 2003
Location: Full-time Utah skier now
Posts: 3,741
Likes: 0
Received 2 Likes on 2 Posts
Default

I'd guess the thermostat paramaters address coolant warmup concerns.
Old 11-23-2009, 04:39 AM
  #34  
AudiWorld Member
 
Vilpo's Avatar
 
Join Date: Aug 2009
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

Ok, i just thought to mention something i dont know if its meaningful but i've noticed that my coolant temp gauge never reaches the second line, only like half way between first and second the best. And also my oil temp gauge usually only goes a little bit above the first line..
Old 11-24-2009, 04:28 AM
  #35  
AudiWorld Member
 
Vilpo's Avatar
 
Join Date: Aug 2009
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

Does anybody have the reisistance specs for the coolant temp sensor for V8? So i can see what it should be at 80 celsius.
I mean the rear one. So i can check that too and see if my engine reaches the right temp. Thanks for any help.
Old 11-26-2009, 01:38 PM
  #36  
AudiWorld Member
 
Vilpo's Avatar
 
Join Date: Aug 2009
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Kneale Brownson
I'd guess the thermostat paramaters address coolant warmup concerns.
Thanks, this was the cause. I just replaced t-stat and it warmed up much higher than ever before and even stayed there. So i guess no need to blame the rad. fan. Thanks again for all the help.
Old 01-03-2010, 01:03 PM
  #37  
AudiWorld Member
 
Vilpo's Avatar
 
Join Date: Aug 2009
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default Surging with O2 connected/mixture

Ok, i think i found something related to this issue i posted here about. I noticed when i was replacing my spark plug wires, that my spark plugs are all very white. Now i've been told that they are supposed to have a slight tan colour on the center electrode.. But mine are bright white.. Also i've noticed that the engine heats up rather quickly for a V8 (in my opinion). So i'm thinking that am i running lean for some reason->that's causing O2 trying to compensate->that's causing the surge when i have O2 sensor connected? Also this could explain the bad mileage?
I've already tried spraying crc around the intake to check for vacuum leaks but didn't find any that way.. Is there another way to check them? Thanks for any help..

Last edited by Vilpo; 01-03-2010 at 01:07 PM.
Old 01-04-2010, 05:02 AM
  #38  
AudiWorld Senior Member
 
V8QinNJ's Avatar
 
Join Date: Sep 2006
Posts: 1,140
Likes: 0
Received 0 Likes on 0 Posts
Default

Hopefully that CRC was MAF safe.. otherwise I can "guess" why you are having surging issues..
Old 01-04-2010, 02:06 PM
  #39  
AudiWorld Member
 
Vilpo's Avatar
 
Join Date: Aug 2009
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by V8QinNJ
Hopefully that CRC was MAF safe.. otherwise I can "guess" why you are having surging issues..
Ok, thanks for the input but i doubt it's the MAF since i didn't find any leaks where it would've suck that in there and secondly i've tested MAF output voltage to be relatively well in spec(idle/wot).
Old 01-12-2010, 05:22 PM
  #40  
AudiWorld Member
 
Jairek's Avatar
 
Join Date: Jan 2010
Location: Colorado
Posts: 205
Likes: 0
Received 0 Likes on 0 Posts
Default

Cant you take the maf out and clean it with crc its made for maf sensors it says on the can


Quick Reply: 90' V8Q surging under acceleration...



All times are GMT -8. The time now is 04:00 PM.