Advice? 2007 DB9 cranking but not starting, no code.
Discussion
Thanks for your attention,
THE PROBLEM:
2007 manual DB9 with 40,000miles, well maintained by independent shop. Everything electrical appears to operate normally, the engine cranks over vigorously, but the engine will not fire up and start. I return ignition back to OFF and try again, the status display runs through it's "checking" routine and comes up with no codes. Try starting and it's the same thing; it cranks over but not firing.
THE BACKGROUND:
My 2007 DB9 went dead on me this week after I parked it in the garage and forgot to turn the ignition switch completely off.
The battery went dead, but I used the (+) terminal under the bonnet and the alternator bracket for a (-) and recharged it with a battery charger. Now it behaves like it's all charged up, except for not starting.
CHECKING THINGS:
- I searched here for "dead battery" threads, and "not starting" threads and nothing quite matches my situation. There was one thread about a yellow battery reset switch under the seat, but that was a situation where everything electrical was dead after a depleted battery.
- Status Display: The status display shows no trouble codes (other than the seasonal "Regular Service Required" which came up last week).
- Spark plugs/coilpacks; I cannot get to them to see if there is spark to the engine. Is there another way to check?
- Fuel/mixture; I'll check the throttle bodies and see if I can detect whether they are actuating, but I got a code on these once before and cleaned their actuators. It was a far more graceful failure and I'd expect a Code.
- Fuses: I'm going to check all fuses, haven't gotten to that yet.
- ECU: I would think a fried ECU would show a Code..?
Has anything like this this happened to anyone here?
Cheers,
- Art
THE PROBLEM:
2007 manual DB9 with 40,000miles, well maintained by independent shop. Everything electrical appears to operate normally, the engine cranks over vigorously, but the engine will not fire up and start. I return ignition back to OFF and try again, the status display runs through it's "checking" routine and comes up with no codes. Try starting and it's the same thing; it cranks over but not firing.
THE BACKGROUND:
My 2007 DB9 went dead on me this week after I parked it in the garage and forgot to turn the ignition switch completely off.
The battery went dead, but I used the (+) terminal under the bonnet and the alternator bracket for a (-) and recharged it with a battery charger. Now it behaves like it's all charged up, except for not starting.
CHECKING THINGS:
- I searched here for "dead battery" threads, and "not starting" threads and nothing quite matches my situation. There was one thread about a yellow battery reset switch under the seat, but that was a situation where everything electrical was dead after a depleted battery.
- Status Display: The status display shows no trouble codes (other than the seasonal "Regular Service Required" which came up last week).
- Spark plugs/coilpacks; I cannot get to them to see if there is spark to the engine. Is there another way to check?
- Fuel/mixture; I'll check the throttle bodies and see if I can detect whether they are actuating, but I got a code on these once before and cleaned their actuators. It was a far more graceful failure and I'd expect a Code.
- Fuses: I'm going to check all fuses, haven't gotten to that yet.
- ECU: I would think a fried ECU would show a Code..?
Has anything like this this happened to anyone here?
Cheers,
- Art
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