Re: [DML] more issues with ignition

["content22207" <brobertson@xxxx>]

4.5 volts into coil isn't going to cut it. 6+ is probably minimum, and
I'd shoot for 8. Voltage problem precedes coil. Blue/Yellow wire to
ballast resistors is primary ignition feed, so your problem goes back
even further. Check white wire (or main brown wire) from ignition
relay (closest to seats) to see if you can get 12 volts there.

Just run a wire from jump start post to positive side of coil and car
may well start (assuming you've got 12 volts there). Won't hurt short
term, but will eventually cook ignition module if you leave it. 

You want a blue or white spark. If your plugs are high resistance,
probably aren't firing.

Forgot all about that inertia switch (PO permanently grounded my pump
somewhere).

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "Henry" <henry@xxxx> wrote:
> 
> I still can't get the car started. Here's the info I have so far..
please help if you can:
> 
> First, the ignition coil is "questionable". Out of the car/cold,
measuring the resistance between terminal 1 (-) and terminal 4 (the
secondary winding) I get 9.5 k ohms. I get the same 9.5 k ohms
resistance between terminal 4 and terminal 15 (+ primary coil
winding). John Harvey measured a known good coil and got the exact
same measurements. The "Delorean Technical Information Manual" from
Rob Grady says that the primary winding should be 0.95-1.4 OHMS, and
the secondary should be 5.5k-8k ohms. I don't know which is correct
or if my coil is good or bad.
> 
> Second, according to the DTIM, I should have 6-8 volts on terminal
#15 of the coil when the ignition switch is on the "run" position. 
I'm getting 4.6V.
> 
> Third, according to the DTIM, I should have 0.5-2 volts on terminal
#1 of the coil when the ignition switch is on the "run" position. I'm
getting 2.5V.
> 
> According to John Harvey, I should be getting 10-11 volts on the
Blue/Yellow wire at the compensating resistor during cranking. I'm
getting about 9.5 volts. On the other side, I'm getting about 7-8 volts.
> 
> The battery has about 12.6 volts.
> 
> When I pull the spark plug wire on the drivers side (cylinder #6)
and crank the engine, I get a small yellow/orange spark.
> 
> I've tried jump starting the car with another during these tests,
and the Delorean still won't start. I get more than 13 volts when the
cars are jumped. It cranks very strong when jumped and cranks pretty
well when not jumped.
> 
> I've checked the inertia switch and connector, and it looks fine.
> 
> Interestingly, I'm NOT getting the frequency valve buzzing when the
car is in the "run" mode but not started. I AM getting a moderate
hum/buzz from the idle speed motor which I hadn't noticed before.
> 
> And as you all know, I've just replaced the pick-up coil and
distributor cap.
> 
> Any suggestions would be most helpful. Thanks in advance.
> 
> -Hank