Need help with fuel issue?
Thread Starter
Audiworld Junior Member
Joined: Jun 2009
Posts: 15
Likes: 0
From: Overland Park, KS
Need help with fuel issue?
Ok this is a bit of a long explanation, but hopefully one of you will take the time to read it and help me out a bit.
I have a 98 2.8 B5 and when the car is cold started (like after around 6 hours or so or overnight) it has a somewhat of a rough start at idle (around 1200-1400rpms) for around a minute or two and then goes down to 750-800rpms afterward. This has been going on for a while now, but since last week I've started to hear a high pitch noise from the front right-hand corner under the hood. It's coming from under the air intake where the A/C pipes seem to connect to the compressor?? I'm not quite sure what's causing it, but it goes away when the engine gets done with the rough idle phase.
Also, since yesterday, out of no where the car suddenly stalls when I shift to idle while driving (not all the time, but it happens quite often).
Here are the codes I got from VAG-COM. I'm guessing it's something to do with my fuel system (but that doesn't explain the noise). Would really like to get some input if some of you have experienced something similar to this.
I really appreciate any help I can get. Thanks guys!
I have a 98 2.8 B5 and when the car is cold started (like after around 6 hours or so or overnight) it has a somewhat of a rough start at idle (around 1200-1400rpms) for around a minute or two and then goes down to 750-800rpms afterward. This has been going on for a while now, but since last week I've started to hear a high pitch noise from the front right-hand corner under the hood. It's coming from under the air intake where the A/C pipes seem to connect to the compressor?? I'm not quite sure what's causing it, but it goes away when the engine gets done with the rough idle phase.
Also, since yesterday, out of no where the car suddenly stalls when I shift to idle while driving (not all the time, but it happens quite often).
Here are the codes I got from VAG-COM. I'm guessing it's something to do with my fuel system (but that doesn't explain the noise). Would really like to get some input if some of you have experienced something similar to this.
17645 - Fuel Injector for Cylinder 1 (N30): Open Circuit
P1237 - 35-10 - - - Intermittent
17646 - Fuel Injector for Cylinder 2 (N31): Open Circuit
P1238 - 35-10 - - - Intermittent
17647 - Fuel Injector for Cylinder 3 (N32): Open Circuit
P1239 - 35-10 - - - Intermittent
17648 - Fuel Injector for Cylinder 4 (N33): Open Circuit
P1240 - 35-10 - - - Intermittent
17649 - Fuel Injector for Cylinder 5 (N83): Open Circuit
P1241 - 35-10 - - - Intermittent
17650 - Fuel Injector for Cylinder 6 (N84): Open Circuit
P1242 - 35-10 - - - Intermittent
17549 - Load Calculation Cross Check: Implausible Value
P1141 - 35-00 - -
17537 - Fuel Trim: Bank 2 (Mult): System too Rich
P1129 - 35-00 - -
17535 - Fuel Trim: Bank 1 (Mult): System too Rich
P1127 - 35-00 - -
17545 - Fuel Trim: Bank 1 (Add): System too Rich
P1137 - 35-00 - -
17547 - Fuel Trim: Bank 2 (Add): System too Rich
P1139 - 35-10 - - - Intermittent
P1237 - 35-10 - - - Intermittent
17646 - Fuel Injector for Cylinder 2 (N31): Open Circuit
P1238 - 35-10 - - - Intermittent
17647 - Fuel Injector for Cylinder 3 (N32): Open Circuit
P1239 - 35-10 - - - Intermittent
17648 - Fuel Injector for Cylinder 4 (N33): Open Circuit
P1240 - 35-10 - - - Intermittent
17649 - Fuel Injector for Cylinder 5 (N83): Open Circuit
P1241 - 35-10 - - - Intermittent
17650 - Fuel Injector for Cylinder 6 (N84): Open Circuit
P1242 - 35-10 - - - Intermittent
17549 - Load Calculation Cross Check: Implausible Value
P1141 - 35-00 - -
17537 - Fuel Trim: Bank 2 (Mult): System too Rich
P1129 - 35-00 - -
17535 - Fuel Trim: Bank 1 (Mult): System too Rich
P1127 - 35-00 - -
17545 - Fuel Trim: Bank 1 (Add): System too Rich
P1137 - 35-00 - -
17547 - Fuel Trim: Bank 2 (Add): System too Rich
P1139 - 35-10 - - - Intermittent
AudiWorld Member
Joined: Aug 2006
Posts: 256
Likes: 0
Because you said the noise goes away when it idles down, then that means its your secondary air injection (SAI) pump. Its an emissions component and if it just started making noise then its possible its not yet bad enough to throw a CEL or code. Search for more info on it. The only harm it will do is throw a CEL and affect a state inspection depending what state you're in but there's way around that.
I can't think of a relationship between the SAI pump and those fuel codes.
I can't think of a relationship between the SAI pump and those fuel codes.
Last edited by xsrfsno225x; Apr 12, 2011 at 01:35 PM.
Thread Starter
Audiworld Junior Member
Joined: Jun 2009
Posts: 15
Likes: 0
From: Overland Park, KS
yes it does sound a bit like a vaccum cleaner.. and the noise does go away when the car idles down.. is there anyway to check the secondary air pump? i'll google that as well.. and do you think it has any connection to the car stalling when shifting to idle? thanks a lot for your reply!!
Thread
Thread Starter
Forum
Replies
Last Post
JP19640_0
A8 / S8 (D3 Platform) Discussion
10
Sep 23, 2011 10:24 PM
Audi mit Höchstgesch
Audi 90 / 80 / Coupe quattro / Cabriolet
2
Jul 15, 2002 03:56 AM
