CIS Lambda to straight CIS conversion

[jdbubb at verizon.net (Dan Bubb)]

I'm betting not.
On cars I've seen where the frequency valve isn't working, if you adjust it 
to idle the fuel mixture is all wrong for top end (engine won't pull past 
4500) or vice versa.
The frequency valve controls the pressure in the lower chambers of the fuel 
distributor and adjusting that pressure varies the amount of fuel flowing to 
the injectors.
In regular CIS the lower chambers run at system pressure (about 70 psi IIRC) 
and I would imagine the springs in the metering chambers are quite a bit 
stronger to compensate for the much higher pressure.

Did you check the little relay for the frequency valve to make sure it's OK?
Also, I have a valve for cheap (off an 84, but I would assume they're the 
same) if you should need it.
Dan

----- Original Message ----- 
From: "Cris Carpenter" <ccarpen@earthlink.net>
To: <scirocco-l@scirocco.org>
Sent: Monday, July 11, 2005 12:04 PM
Subject: CIS Lambda to straight CIS conversion


> Question for those with this kind of experience:
>
> The frequency valve in my 81 quit. I want to just do away with the 
> feedback system so it works like an old plain CIS system. Can I somehow 
> get rid of the frequency valve without replacing the fuel distributor with 
> an earlier non-Lambda one?
>
> Thanks,
> Cris
>
>
>
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