Re: [DMCForum] Crappy running still...
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Re: [DMCForum] Crappy running still...

We had a customer with very similar problems yesterday. I fitted a new
coil and a new RPM relay, as well as repairing a damaged pin on the
idlespeed thermistor and replaced the full throttle microswitch and
vacuum advance solenoid with a broken pin, all of which were compounding
the problems by exhibiting poor starting and a lumpy idle. All of this
made it a lot better but he was getting serious hiccupping at about
4000rpm unless he backed off the throttle, which would then make it
red-line smoothly.

We fixed it.

I suggested we look inside the distributor - I know I suggested this to
you too, and you confirmed you'd cleaned and re-lubed the bob-weights.
When we pulled the dizzy out of this car, the bob-weights were fine
_but_  one of the springs that tensions the weights was missing. Don
Steger told me once that most DeLorean dizzys only have one spring. I've
seen it before and that time, as this, no evidence of a broken or
dislodged spring was found. However, by hooking up a spring from a spare
dizzy, the problem disappeared completely, and our customer rang today
to thank us for "transforming the car" and making it far better than he
ever imagined it could be.

I wonder if the timing being too far out can bugger up the ignition ECU
which in turn cuts the RPM relay - our customer's problems were not
fixed, but appreciably altered by trying different RPM relays (by a
previous garage)

It could be worth a try.

Best Wishes


cruznmd wrote:

>I have no idea why my car ran so well after putting the new ignition
>coil in yesterday, but that was not the cause of my problem. The car
>still starts far easier than it did before but now, again, it runs
>Symptoms are exactly the same: After 1/2 pedal, the tach jumps all
>over the dial, the car bucks and farts and nearly tosses me out of
>the seat. I lose acceleration until I back off of the pedal.


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