Fuel infection woes

[tberk@mindspring.com (T Berk)]

ian Butler wrote:
> 
> On Wed, 7 Aug 2002, Elijah R wrote:
> 
> > Well I am about at wits end with my car stuttering @2800 Rpm. I can't seem
> > to get my finger on the cause, new pumps, new injectors, new ignition, new
> > filter, new vacume lines, re-timed a dozen times.
<snip>
> 
> Elijah,
> 
> If this is a CIS-E car, as I think all 16v models are, I have one possible
> thought.  I don't know if CIS-E does this, but with Digifant on my bus, the
> idle switch will shut off the injectors above something like 2500rpm to save
> fuel (like if you're coasting down a hill and using the engine to brake.)
> If the idle switch is stuck on, it'll always think you're idling, and cut
> off fuel at 2x00 rpm, turning Happy Fun Bus into Doesn't Go Anywhere Bus.
> 
> I know CIS-E can't shut off injectors, but maybe it can lean out the mixture
> enough at the distributor to cause that problem?
> 
> ian "$100 for a service manual?  I'll just wildly guess" Butler / ian@hplx.net
> '88 Scirocco 16v, '87 Syncro GL
> 


This is really funny because I am diagnosing the hybrid 81 w/ CIS-e &
K/S. The WOT switch is testing OK, but the idle switch is not. Looks
like you may have helped both the slight bog AND the high idle.

E-man, I know it might seem comforting to switch to carbs, and if you
want more power to ya, but diags exist to solve your problem. In my case
my existing manual doesn't cover the year of the donor and I am awaiting
the new one.

Tough it out. I think the F/I is a better way to go, most of the time.


TBerk