[s-cars] Codes

[Ernest Seow]

Also, to test the induction system, you must block off all breather hose 
attaches to the inlet tract. I know on 1.8T, if you don't, you will have oil 
pushed into the combustion chambers, and it smokes for a long time. I test 
the systems right at the turbo inlet, not from the inlet hose. The hose is 
not supposed to see positive pressure, unless you have a good aftermarket 
inlet hose. The VAG tester is from the G-60 Corrado. It uses a 2 gauges on a 
leakdown gauge setup. You set the inlet pressure, then open the line to 
pressure the system. You also have to set the engine at a certain timing 
mark, depending on your cams. VW Corrados were 3 teeth retarded from TDC to 
get complete valve closing.  I will dig one of these units up and test my 
system sometime this week.


>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
>
>