[Shotimes] 95 MTX failing in high heat

[Edward Mazurek]

Hi Jonas,

Yes thanks. The problem is the hood only has to be open for a minute or
two and the car will start. That's why I was thinking it maybe is the DIS
since the crank sensor is buried and wouldn't cool that quickly.

Anyone knows if DISs are available from Advance or AZ?

Thanks,

Ed

Jonas Diener wrote:
> Seems like it could be the DIS module.
> 
> The next time it fails, you can do a test to determine if it's a problem
> with ignition or fuel delivery.
> 
> When it's in it's failure state, pull one of the ignition wires off it's
> plug, and insert a metal key into the end of the wire.  Rest the key so it's
> near the metal intake, but not touching it.  Then have someone crank the
> engine while you watch the key closely.
> 
> If you see a spark jumping from the key to the metal intake, then the
> ignition system is doing it's thing and firing the plugs.
> 
> You can also check for fuel pressure by sticking your key into the schrader
> valve on the fuel rail.  Do this with the ignition in the "run" position.
> If fuel sprays out, then you have fuel pressure.
> 
> (Do the spark test first.  If you do the fuel test first, the ignition spark
> might ignite any fuel that has sprayed out.)
> 
> 
> On 7/22/08 11:59, "Edward Mazurek" <emazurek at cisco.com> wrote:
> 
>> Hi James,
>>
>> Since I had already replaced the crank sensor and the water pump
>> I was really hoping it wasn't that. The DIS is just so accessible!
>>
>> Would you know what code I would expect for the crank sensor failure?
>>
>> Any chance it's the DIS???? :)
>>
>> Thanks,
>>
>> Ed
>>
>> James White wrote:
>>> Classic crank sensor failure.
>>>
>>> Replace the waterpump at the same time.
>>>
>>> regards, Jim White
>>> (still not on the new list)
>>> '95MTX - 270k
>>>
>>>
>>> At Tuesday, 22 July 2008, Edward Mazurek <emazurek at cisco.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> My 95 MTX just started failing when it's hot outside. It was 100F
>>>> here yesterday and once I got off the highway the engine starts
>>>> stumbling and then dies. It cranks then but won't start. If I open
>>>> the hood, even just for a minute or two, it starts and will run
>>>> again for a while.
>>>>
>>>> I haven't run the codes yet but I'm thinking DIS. The car has 185K on
>>>> it and at around 120K I did all the 60K maintenance including replacing
>>>> the cranks sensor and cam sensor. I haven't replaced the DIS or
>>> the coil
>>>> pack at this point so they are original.
>>>>
>>>> What codes would I expect if the DIS was failing?
>>>>
>>>> Are those available at advance or autozone or do I need a Ford part?
>>>>
>>>> Thanks in advance for any help.
>>>>
>>>> One interesting point is that this car has been very reliable overall.
>>>> Even the AC is still factory cold and the only thing I've done to it
>>>> is remove a clutch shim a year or two ago.
>>>>
>>>> Thanks!
>>>>
>>>> Ed Mazurek
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