[urq] I'm SO close to giving up...Anyone have a stick of TNT !!

[JP Chaplen]

I have checked the intake temp sensor and it is working within the
parameters of what the factory manual is telling me...And I have checked
all the connections are tight/snug for the unit

(forgot to put that on the list)

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On
Behalf Of Jim Haseltine
Sent: Friday, April 15, 2005 4:40 PM
To: Chaplen, John; Urq List
Subject: Re: [urq] I'm SO close to giving up...Anyone have a stick of
TNT !!

Does the WX have an inlet charge temperature sensor? On the WR it's
fitted 
in the inlet manifold just above the throttle body, on the MB it's
fitted in 
the outlet of the intercooler.

Broken, poor or intermittant connections to this sensor can give you
almost 
exactly what you describe. Feels like one or more cylinders are
'missing' 
but if you lift your foot slightly it clears. If you then s-l-o-w-l-y
press 
down again until you reach WOT the missing doesn't return until next
time 
you try to accelerate sharply.

It's common practice now in the UK to remove the soldered connections
from 
this sensor and crimp spade connections onto the wires.

Regards,

Jim Haseltine

----- Original Message ----- 
From: "Chaplen, John" <John.Chaplen at mercer.com>
To: "Urq List" <urq at audifans.com>
Sent: Friday, April 15, 2005 11:49 PM
Subject: [urq] I'm SO close to giving up...Anyone have a stick of TNT !!


Ok....basic problem...Under "WOT" and boost the car stumbles...back off
the throttle just a TAD and car starts pulling strong again...

What's been done...(not necessarily in this order)

1 New fuel injectors - all lines checked and cleaned
2 fuel Dist checked, but rebuild anyways (with increased flow) - all
retested..seems no problem with flow.
3 Volume test done - Ok'd
4 Pressure test done - Ok'd
5 Back flow from Exhaust - NP there
6 Checked for the small filter ...no problem there
7 checked WOT and IDLE switch..all fine there
8 new cap, rotor, spark plugs and wires...
9 Volt at coil is 13-14 volts
10 all grounds clean and tested
11 Compression check + - 10psi between all 5 cyl
12 Pulled all 5 plugs, they all look fine, no damage, they all look the
same too...clean and right color...(bosch tri-electrodes)
13 Swapped ECU with known good one...still same problem
14 checked Waste gate for torn diaphragm - no problem there
15 New fuel filters (twice)
16 Boost is NOT passing 14 psi (chipped by SJM)
17 checked all hoses and removed them, they are fine.
18 I have backed boost down to less than 9psi still same symptoms
19 removed full throttle cable (thinking it might be a full throttle
mode) nope..
20 new and checked the Freq valve for duty cycle looks correct and can
hear it working
21 rebuilt alternator to make sure voltage/amps were not a problem
21 car passes DEQ SUPER clean...

I guess my last question would be that I can think of, are there any
sensors that might be bad that would put the car into a reduced timing
mode?

I have had Scott Mockery drive the car, and it's NOT a fuel cut out
issue (4K cut out).

I just installed a fuel air meter box Wednesday, but have not had a
chance to run it...but from tests at idle with running WOT switch, it is
fully enriching as it should do...
and running and idle it's stoich? (sp)...I will be trying to drive it
this weekend to see if it's running too lean...But to me at this point I
feel like it's a timing issue?

(NOTE- I have done all of the above to try to fix this problem)

Any help would be so much appreciated!!!



John Chaplen CNE
Mercer Human Resource Consulting
Portland, OR 97204-3693





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