[urq] Cold start, thermo time switch, Frequency valve

[urq]

On my car the balky OXS Freq Valve was resolved with a replacement ECU ...
my car would start and idle, but then would cough and die if you tried to
apply any throttle.  

After I got the MC2 installed it was running just fine with the OXS Freq
Valve disconnected.  Unfortunately you can't just unplug the OXS Freq Valve,
you'll get a 4k PRM cut out ... you need to jumper the freq valve signal to
the aux air regulator ... I think ... if you want to do this let me know and
I'll look up my notes.  I did post the details as well ... 

Steve B
San Jose, CA (USA)

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
Of Gary Brown
Sent: Sunday, March 16, 2008 11:07 AM
To: urq at audifans.com
Subject: [urq] Cold start, thermo time switch, Frequency valve

 Guys -

 This is driving me crazy.

My cold start valve still isn't firing even though all of the wiring and
physical tests of all parts found all systems go.

Also, it takes forever for the frequency valve to buzz, although sometimes
it will buzz during warm up when the fan kicks on, then stop as fan turns
off.

I had all of this sorted out before the paint job. The car would fire right
up and be driveable no matter how cold.

Now, after 20 minutes or more, the FV starts to buzz. I'll set the duty
cycle, car will run great!

Then, after a brief cool down, no more FV buzz, then over night, car will
not start with out a few cranks of the air plate screw.

No vacuum leaks at all either.

Am I missing something simple?

Thanks

Gary

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