[DML] High Idle

[Woody <BePositive2000@xxxxxxxxx>]

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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