Re: [doc] To Lambda or not to Lambda, that is the question.

[Martin Gutkowski <martin@xxxxxxxxxxxxxx>]

Hi John

Just removing the lambda system by capping off the port won't get you 
the advantages a non-lambda engine will give, it all comes down to 
ignition timing, and the curve on the Volvo dizzy is quite different.

Since we've started, I must've seen 5 cars come in with the wrong relay 
in the lambda "hole". FWIW you don't need to buy a Bosch one for about 
£12, we have generic ones for £2.50. My own car had the wrong relay in 
it when it arrived.

I'm surprised we didn't pick up on the non-buzzing frequency valve when 
your car was in, John, though both Dave and I thought it was a pretty 
quick DeLorean to begin with, and a non-functioning lambda system will 
make the car much worse than yours, in my experience (with my own!).

Let me guess: The car responds much better with the accellerator on the 
floor? That's because of a little white microswitch on the throttle 
spool which makes the lambda system go "a bit rich" - that will create a 
noticable improvement.

Seen plenty of those switches broken too :-)

Best Wishes

Martin

jchapelhow wrote:

> All.
> 
> OK, first an admission. When I first picked up my car I bought the
> relay update kit. I also purchased a 'standard car relay' so that my
> heater panel only came on with the lights. As a result I ended up
> with a 'spare' relay. Due to my error I incorrectly fitted one of my
> new 40amp relays into the Lambda socket.
> 
> Since then the car ran well, a tune-up by DMUK and lots of gentle
> driving and many miles later everything was great. A recent visit by
> a fellow member suggested that my car was running rich, but it ran as
> well as I thought could be expected.
> 
> Last week I finally corrected this error and put a new Bosch relay
> back in, I assume that this finally enabled the Lambda circuit, but
> as ever I stand ready to be corrected :-)
> 
> My what a difference. Once the engine is upto speed my mid range
> acceleration is massively improved.
> 
> Since the RHD cars don't use the Lambda system at all, and my car
> already has the CAT bypass, I am interested in opinions for or
> against the Lambda system.
> 
> I am VERY happy at the moment. I am not planning on changing anything
> on my car (why fix something that isn't broken...)
> 
> It may be topic one of our experts can explain, articles on DMCNEWS
> include a 'how-to' on eliminating the Lambda but not really what
> effects that should have on the car, or indeed what to look out for
> if yours isn't working.
> 
> 
> John Chapelhow
> DOc 19 : 'Boeing' #0737
> 
> 




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