[DML] Re: High Idle

["Harold McElraft" <hmcelraft@xxxxxxx>]

Are you ABSOLUTELY SURE the throttle plates are closed????? A vacuum 
leak is possible but at that speed - unlikely. Have you disconnected 
the idle speed motor while the engine is at "idle" to see what 
happens?

Harold McElraft - 3354


--- In dmcnews@xxxxxxxxxxxxxxx, Woody <BePositive2000@xxxx> wrote:
> 
> I'm stumped. Car insists on running at 2400-2600 rpm. 
> 
> I've diagnosed the idle circuit by removing the ECU plugs and 
doing all
> the tests. I did not have the temp curve for the thermistor but the
> resistance variation approached that of a chart I had for a Volvo 
B28F.
> Nothing seems to be binding in the linkage, throttle plates are 
closed
> at idle, air metering plate not binding.
> 
> 
> 
> I tried checking the frequency valve with a dwell meter attached 
to the
> orange wire on the diagnostic plug, but not sure I was reading the
> dwell correctly.  One book says read dwell on 4 cylinder scale, 
other
> books, including the Delorean manual do not say what scale so I 
assume
> they mean the 6 cylinder scale. I don't have a gas analyzer and 
cannot
> find anyone around that will check CO who knows the engine.
> 
> This car had been in storage for 5-7 years so I removed & cleaned 
the
> tank, cleaned the lines, and replaced the pump, cold start 
injector,
> control pressure regulator, injectors and fuel distributor with 
those
> from my wrecked D which had most of these components replace in the
> past 2 years.  Installed new accumulator, as well.
> 
> In addition, I installed a new thermistor, replaced most of the 
vacuum
> lines, checked for vacuum leaks in the system and did not find 
any.  
> 
> The past 2 days I've also noticed a new possible problem.  The car
> starts hard after sitting for several hours.
> 
> Thanks in advance for any suggestions or sites to look for 
answers.  I
> thought had troubleshot about every conceivable problem with the
> injection system but this one has me stumped.
> 
> Woody
> 
> 
> 		
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