Poor running 3B

[kneale at knitknacks.com]

I don't have my Bentley here, but I seem to recall Scott Mockry having a
MAF test.  

Since it starts/idles OK, maybe a fuel pump providing inadequate pressure???

Original Message:
-----------------
From: HJS group44_us at yahoo.com
Date: Fri, 12 Nov 2010 04:37:14 -0800 (PST)
To: b.benz at charter.net, 200q20v at audifans.com
Subject: Re: Poor running 3B


I will be pulling the ECU codes this weekend. I did check wiring back to
the 
ECU, and its all good, Ill check bently for charts on the sending units. I
dont 
recall one for the MAF though, so Im still not sure how to test that.




----- Original Message ----
From: Bernie Benz <b.benz at charter.net>
To: HJS <group44_us at yahoo.com>
Cc: 200q20V mailing list <200q20v at audifans.com>
Sent: Fri, November 12, 2010 12:43:45 AM
Subject: Re: Poor running 3B

I haven’t looked recently but Bentley may have some procedures. They are 
thermistors, I think B may have temp / resistance charts. Do continuity
checks 
back to the ECU.
Have you pulled the ECU’s fault codes?



On Nov 11, 2010, at 6:49 PM, HJS wrote:

> Thanks Bernie. Do you have any procedures on how to test these?
> 
> 
> 
> 
> 
> ----- Original Message ----
> From: Bernie Benz <b.benz at charter.net>
> To: robert weinberg <centaurus3200 at yahoo.com>; HJS <group44_us at yahoo.com>
> Cc: 200q20V mailing list <200q20v at audifans.com>
> Sent: Thu, November 11, 2010 6:44:17 PM
> Subject: Re: Poor running 3B
> 
> If previously running good, starts easily, and no recent screwing with
timing,
> not likely a distributor issue.
> Check engine temp and intake air temp sensors to ECU.
> 
> On Nov 11, 2010, at 3:29 PM, robert weinberg wrote:
> 
> 
>> distributor issues?
>> 
>> 
>> 
>> 
>> ________________________________
>> From: HJS <group44_us at yahoo.com>
>> To: 200q20v at audifans.com
>> Sent: Thu, November 11, 2010 3:21:48 PM
>> Subject: Poor running 3B
>> 
>> HI Everyone. I have a 3B in my UrQ and it ran great for quite a while.
> Recently
>> its not running well at all. Car starts right up and idles, but VERY
rich and
> a
>> good amount of exhaust smoke at idle (from being so rich). Driving along
its
>> just OK but as soon as I hit boost, its like turning off the key. It
pops and
>> sputters and damn near dies until I let off the gas, then it comes back 
again.
>> At idle, if I go WOT instantly, it acts similarly, pops..sputters etc
until I
>> let off, then it goes back to idle.
>> 
>> 
>> Things Ive tried: New ECU, no change. New MFTS, no change. Checked,
double
>> checked and triple checked all my powers and grounds to the ECU and they
are
>> good. Up next is MAF, but not sure how to check it.
>> 
>> Any other things Im missing? Thanks for any tips!
>> 
>> 
>> 
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> 
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