Thanks for that info, that is a new one.
<NoOption5L@[EMAIL PROTECTED]
> wrote in message
news:fa4750d6-acb2-4695-84df-4c8e2fbef774@[EMAIL PROTECTED]
> On Feb 21, 9:30 pm, Michael Johnson <c...@[EMAIL PROTECTED]
> wrote:
>> It makes sense because the module needs to be tight against the
>> distributor to keep it from over heating. It would probably heat up
and
>> then fail and cool off and work correctly.
>
> So that's their purpose? Do you think it could have caused the
> ignition module any damage... do you think it would be worth replacing
> now?
>
> Patrick
>
>
>> NoOptio...@[EMAIL PROTECTED]
wrote:
>> > On Dec 30 2007, 4:19 pm, NoOptio...@[EMAIL PROTECTED]
wrote:
>>
>> > I hope you remember the story. (If not, you can refresh your memory
>> > below.) You will NOT believe what the cause of the problem was! You
>> > know those two little screws that attach the ignition module to the
>> > distributor, they take a Torx wrench to tighten/loosen? The one
>> > closest to my thermostat housing had worked its way lose. How, why I
>> > don't know. While hunting/searching, again, all my vacuum lines for
>> > leaks, I just happened to notice the little screw lying in the
>> > [screw's] deep mounting hole in the ignition module. The screw was
>> > blocked from completely falling out because the end of it would bump
>> > into the thermostat housing. I twisted the distributor around and
>> > tightened the screw, not knowing what effect it would have on the
>> > car. Then took the car for a little test drive afterwards and the
>> > idle problem didn't appear, and it has been a couple weeks now and
the
>> > car has run perfectly -- not a single hiccup in the idle. Just a
>> > coincidence? At this point, I'd bet the house it's not.
>>
>> > Okay, now who's going to claim these screws being loose was their
>> > second guess? :-)
>>
>> > Patrick
>>
>> >> Patient:
>>
>> >> 1993 Cobra/125,000 miles -- stock except: shorty headers, advanced
>> >> timing, 73mm C&L mass-air meter and an A9L processor.
>>
>> >> This combo ran solid for a number of years and the symptoms suddenly
>> >> -- no mods or changes were made -- just appeared.
>>
>> >> The symptoms have gone on now for about 1 1/2 years.
>>
>> >> The frequency of the symptoms has slowly increased from maybe once a
>> >> week to almost every day. But despite the symptoms, the car
performs
>> >> well without any popping, missing, stalling, gassy smells, or
smoking.
>> >> -----
>>
>> >> Symptoms:
>>
>> >> Reved-up idle. Sometimes. Some days, the car will run fine all day
>> >> long, or for a couple days. Other days, the reved-up idle will
>> >> continue to happen.
>>
>> >> Idle speed varies, but generally sticks -- doesn't roll -- somewhere
>> >> between 1600-2200 rpms. Never goes above 2200.
>>
>> >> Generally, I get the reved-up idle a few minutes -- 3-4 minutes --
>> >> after a cold start AND after I dip into the throttle a little bit.
>>
>> >> But frequently I get the reved-up idle when/after the motor is fully
>> >> warmed up.
>>
>> >> Miles and miles of driving -- 20-30 -- even at highway speeds,
often,
>> >> won't alter the reved-up idle.
>>
>> >> Running the car hard, even really hard, doesn't change the idle (if
>> >> anything, it often makes it go higher up in the 1600-2200 range).
>>
>> >> Normally, running the car hard will trigger the reved-up idle.
>> >> -----
>>
>> >> Complications:
>>
>> >> Shutting the car off and restarting _always_ fixes the idle, at
least
>> >> for a while.
>>
>> >> No codes have _ever_ popped up in the computer.
>>
>> >> Sometimes the idle will just fix itself while driving.
>>
>> >> And a few times _while reved up_ I've had it just fall to the normal
>> >> idle speed and stay there. And a few times, after falling to a
normal
>> >> idle, I've had it return to the reved-up idle -- like someone is
>> >> controlling it by remote.
>>
>> >> A scan tool was run once while the idle was reved up and, for some
>> >> unknown reason, the reved-up idle didn't return for nearly 4
>> >> months. Also, a few minutes _after_ the [scan] tool was
>> >> _unplugged_, the idle dropped to normal and then a few minutes later
>> >> it reved back up. Coincidence? My mechanic, and he's extremely
good,
>> >> was at a loss, but thought the processor might have some issues.
>> >> (Note: My mechanic drive my car home that night and the car ran
>> >> PERFECT for him. It's about a 40-mile loop for him to drive to and
>> >> from work.)
>> >> -----
>>
>> >> Recent developments:
>>
>> >> A few weeks ago, I noticed on two occasions, a missing while
driving/
>> >> cruising at highway speeds. The missing has since gone away.
>>
>> >> Also, after a cold start leaving work one day, a few weeks ago, the
>> >> idle went below the normal idle speed and the car acted like it was
>> >> going to stall. After a few minutes of driving the problem went
away
>> >> and hasn't returned since.
>> >> -----
>>
>> >> Treatments used so far, in this sequence:
>>
>> >> 1) Fuel filter
>>
>> >> 2) New TPS
>>
>> >> 3) New Air-Idle Control valve
>>
>> >> 4) New Mass-Air sensor (the actual sensor unit in the mass-air
meter)
>>
>> >> 5) New A9L Processor
>>
>> >> Each treatment was used independently, but nothing has
helped/worked.
>> >> -----
>>
>> >> Besides a gun, does anyone know of a cure?
>>
>> >> Patrick
>
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