[s-cars] Codes

[Ernest Seow]

As for the testing, I have access to all VAG tools. As for the the O2 
sensor, just unplug it and see if the issue occurs. As have not tried 
installing new engine speed sensors, but at this rate, I might be installing 
new sensors everywhere if there are no leaks found. I am running MTM 1+ 
software with the MTM modded map. I have a 4 bar map, but I am waiting for 
more hardware before installing it. The other chioce I have is to install a 
1598 ecm harness and test the engine harness for opens or high resistance. 
The one thing I like with ODB II cars, is you can view and see MVB's while 
running. The older cars have binary numbers. Makes it a pain in the ass to 
diagnose.
Regards,
Ernest


>From: Robert Myers <bob at chips-ur-s.com>
>To: "Ernest Seow" <ezveedub at hotmail.com>, s-car-list at audifans.com
>Subject: Re:  Codes Date: Mon, 24 Jul 2006 23:16:12 -0400
>
>
>Ernest,
>
>This particular ECU has a Bosch 3 bar transducer but, IME, there is no 
>problem with the VMAP.  Either is fine.
>
>Except for one time the engine hasn't stopped.  If I get on the accelerator 
>a bit too much it just stumbles and feels like it isn't taking fuel.  If I 
>let off the loud pedal a bit it comes right back and runs quite acceptably 
>for cruising the highway at somewhat above legal speeds.  There has been no 
>"hitting the wall" type feeling.  It just sort of bogs down and doesn't 
>want to go anywhere and the speed falls off until I ease off the loud 
>pedal.  This car was new to me about a year ago.  It contains an OXS of 
>unknown age.  I have replaced the fuel pump and plugs.  OXS is next as soon 
>as the connector harness (on order) arrives.  Fuel filter is also of 
>undetermined age.  A new one is on order.  A can of Techron has been run 
>through the injectors.  The induction system has been pressure tested and 
>no leaks were found.  I have installed several different flavors of RS2 
>software into the ECU to see if any of those variations make a difference.  
>None found.  I have swapped a different ECU (containing a VMAP) into the 
>car.  No effect.  I'm fairly well convinced it is not a software problem.
>
>Tomorrow I plan on checking the throttle switch for proper operation.  I 
>may swap out the WGFV to see if the spare I have makes any difference.  I 
>may also swap out the BPV.  I will put the OEM coil-pack back into the car 
>to isolate any effect from the 1.8t coil conversion which I did a while 
>back.
>
>You can build your own pressure tester gadget.  Obtain about 4 inches of 3 
>inch PVC pipe.  You may need to use thin-wall stuff to get that diameter.  
>Fit a tire valve in a cap for that pipe and glue the cap onto the pipe.  
>Disconnect the hose from the MAF, insert the pressurizer gadget into the 
>hose and clamp it tightly.  You can now pressurize the entire system using 
>shop air.
>
>At 10:43 PM 7/24/2006, Ernest Seow wrote:
>>*This message was transferred with a trial version of CommuniGate(tm) Pro*
>>Well its seems we are in the same boat. What MAP sensor are you running?? 
>>VMAP right? I also need to pressure test my system. I need to borrow one 
>>of the VAG pressure testers and turn it up to about 1.5 bar and see what 
>>leaks if there are any. It feels like the vehicle goes into overboost and 
>>cuts. Its like hitting a wall. I really hate it! I am starting to wonder 
>>if the N75 is acting up. I want to try another Mass Air flow, but only 
>>have a new RS2 mass air flow meter for different software. I will have to 
>>run through all the hoses and make sure there are no leaks anywhere now. 
>>When your car cuts out, does it restart right away or do you have to wait?
>>Regards,
>>Ernest
>>
>>
>>
>>
>>--
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>
>
>Bob
>urS6 for sale: http://chips-ur-s.com/S6.html
>
>