Re: [DML] Re: Idle_Off-idle problem

["DMC Joe" <dmcjoe@xxxx>]

John,

Your DeLorean idle speed is 125 RPM's too fast. The factory specifications are 775 RPM +/- 50 RPM. The idle speed is controlled by the constant idle speed circuit and is non-adjustable. Any attempts at overriding this circuit will result in unsatisfactory results.

The section of the technical information manual that referees to "idle speed adjustment" is incorrect.

"We're here to help you"

DMC Help / De Lorean Services / <dmchelp@xxxx>
Web Site: <www.deloreanservices.com>

----- Original Message ----- 
From: John Hervey 
To: dmcnews@xxxxxxxxxxx 
Sent: Monday, July 31, 2000 9:55 PM
Subject: [DML] Re: Idle_Off-idle problem


Dave, 
My 11004,Jan. 82 Idles at 900, I have also noticed that even thought 
the books say idle can't be adjusted. In another part of the service 
manual it shows you how to adjust the idle.
John 
11004



--- In dmcnews@xxxxxxxxxxx, "Dave Swingle" <dswingle@xxxx> wrote:
> Thanks. The idle RPMs (750 vs 850) were estimated based on watching 
> the tach thru the back window, not with any fancy test equipment. 
> Strange thing to us was the difference between the two cars, one 
> going to 1200 and one (mine) going to around 900 by flipping the 
> microswitch. I did notice, though that it was impossible to make my 
> engine run at, say, 1000 rpm with the gas pedal, it was either 
above 
> or below. 
> 
> BTW - these two cars were within about 400 VIN of each other, both 
> 10/81 build.
> 
> So - I guess the other car has a 1200 rpm ECU and mine has 900. Any 
> idea when the spec changed? I'll bet it was 10/81 or one of these 
has 
> been changed. My car is the slightly later build date of the two.
> 
> Thanks!!
> 
> Dave
> --- In dmcnews@xxxxxxxxxxx, "DMC Joe" <dmcjoe@xxxx> wrote:
> > Dave,
> > 
> > There are two versions of the idle speed ECU both are set for 750 
> +/- 50 RPM when switched on and 900 and 1200 RPM when switched off. 
> Although the 1200 RPM sounds high the effect will null out as soon 
as 
> a load is placed on the engine.
> > 
> > BTW; your idle speed should be 750 RPM not 850.
> >
> > 
> > ----- Original Message ----- 
> > From: Dave Swingle 
> > To> Subject: [DML] Idle_Off-idle problem
> > 
> > either idle at 850 rpm (normal) or, as you tip-in the throttle, 
> jump
> > immediately to about 1200


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