Help - Lotus

[Brett Dikeman]

At 11:18 AM -0400 7/11/02, <moore01 at fuse.net> wrote:

>1.) While running at idle there is the click...click...click....
>sounding like a relay toggling.

Idle Stabilization Valve, maybe?  Where's the click coming from?


>2.) When coming totally off the gas there is a tendenacy to backfire
>like.  There is this economy mode, that apparently Lotus added, that
>is supposed to cut off all fuel delivery when one comes completely
>off the throttle at speed.  Does seem to be doing that, hence the
>backfire like condition.

This is in most of the CIS systems out there...pretty common.

Check the idle switch on the throttle and what is usually called
something like "deceleration fuel shutoff valve".

Take it for what it is(suggestions from an Audi guy, not a Lotus guy
:-) and what it cost(nothin'!), but I hope it gets you in the right
direction.


>3.) The guy would really like a book or service manual for this
>Bosch system, aka the "Bible" showing and describing all pins outs
>associated with the ecu.  Seem to remember someone mentioning that
>sort of thing here for a Bosch system.

Bosch Fuel Injection, by Probst(sp?)  Picked my copy up at Borders, I
think.  Front cover is a picture of a MAF sensor with the wire
glowing.  It covers CIS and EFI theory of operation in detail, but
won't have anything specific to your friend's car.  It is good for
understanding how and why things work in CIS.

   Factory repair manual is probably your best bet for wiring diagrams
and such; if your friend balks at the cost, he shouldn't be driving a
Lotus ;-)

  BTW, I could swear I've seen a Lotus Espirit Turbo mailing list
somewhere...poke around with Google and see if you can find
anything...if such a group exists, they'll be a lot more helpful than
us Audi folk! :-)

B
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