1997 Crown Vic with a miss.

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bob_in_stpete - 04 Apr 2007 15:12 GMT

I recently developed a miss in the number 4 cylinder.I have changed
the plugs,and wires.Still has the miss.I have checked the Fuel
Injector and the coil pack both are good.The check engine light stays
steady at idle but blinks when the car goes over 40mph.Any ideas what
else it might be?

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jfrancis311@gmail.com - 04 Apr 2007 18:05 GMT

you say you checked the coil pack and injector. How did you do it?

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bob_in_stpete - 05 Apr 2007 14:42 GMT

On Apr 4, 1:05 pm, jfrancis...@gmail.com wrote:

> you say you checked the coil pack and injector. How did you do it?

The coil pack was checked with a voltmeter and the injector was
replaced with a new one.

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aarcuda69062 - 05 Apr 2007 15:15 GMT

In article
<1175780537.399125.179470@y80g2000hsf.googlegroups.com>,

> On Apr 4, 1:05 pm, jfrancis...@gmail.com wrote:
> > you say you checked the coil pack and injector. How did you do it?
>
> The coil pack was checked with a voltmeter

Inadequate test.

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bob_in_stpete - 07 Apr 2007 23:39 GMT

Seems it isnt the coil packs or the injector.I have no compression
from the #4 Cylinder.All others are reading at 150.

> In article
> <1175780537.399125.179...@y80g2000hsf.googlegroups.com>,
[quoted text clipped - 5 lines]
>
> Inadequate test.

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Scott Dorsey - 05 Apr 2007 19:04 GMT

>On Apr 4, 1:05 pm, jfrancis...@gmail.com wrote:
>> you say you checked the coil pack and injector. How did you do it?
>
>The coil pack was checked with a voltmeter and the injector was
>replaced with a new one.

Do you mean a voltmeter or an ohmmeter?

Does this car have multiple coil packs so you can swap 'em around and
see if the problem moves.

The coil pack really is suspect here.
--scott

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"C'est un Nagra. C'est suisse, et tres, tres precis."

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