[s-cars] Car runs like crap under load

[Paul Gailus]

You could also check the hose to the fuel pressure regulator
which tees off from a tap on the intake manifold.
If this is leaking under boost then you won't get the required
increase in fuel pressure.
Since you're swapping parts, you could also try swapping the
regulator itself if all the hoses look good.

Paul

-----Original Message-----
>From: calvinlc at earthlink.net
>Sent: Jan 20, 2007 7:17 PM
>To: Jason Butler <jwbutler at wispertel.net>, chris chambers <fastscirocco_2000 at yahoo.com>, s-car-list at audifans.com
>Subject: Re: [s-cars] Car runs like crap under load
>
>Something I just came across.  Here is a pretty cheap setup for an
>electrical fuel pressure gauge ($110 for sensor and gauge).  For
>troubleshooting purposes you could calibrate the sender against an analog
>gauge and then just have the sensor and us a DVM to troubleshoot when you
>had problems.
>
>http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=381/prd
>381.htm
>

>--Calvin
>
>-----Original Message-----
>From: s-car-list-bounces at audifans.com
>[mailto:s-car-list-bounces at audifans.com]On Behalf Of Jason Butler
>Sent: Saturday, January 20, 2007 8:40 AM
>To: chris chambers; s-car-list at audifans.com
>Subject: Re: [s-cars] Car runs like crap under load
>
>
>The way the car runs it does not react the same as a boost leak, I have had
>numerous ones of these before.  It will creat full boost for a bit then miss
>a little and get worse from there until the engine cuts out completely then
>it will fire again the cut out then fire and so on.  Almost like the fuel
>pump can't keep up.  Could this be from a failing coil that is dumping
>unburned gas in the exaust causing the O2 sensor to lean out the engine and
>cause further cylinders not to fire? Thus making the exhaust even richer and
>so on.  I have my wifes S6 so I will be swaping parts today.  Thanks all for
>the advise
>
>Jason