[s-cars] Codes

[Robert Myers]

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