Cadillac: Sputtering Deville

When it drives, does the engine run mostly normal? It could be the firing
meck itself getting a bit worn and maybe showing it's age a bit.
Last Caddy I used was a 1984 so I am just guessing, that ones engine blew
totaly on me.


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"Cal" <net> wrote in message
news:f1iak2$1ep$netins.net... 

Cal <net> wrote:
C>I've got a 1999 Deville with 135,000 miles. In the last couple of weeks it
C>just started to misfire occasionally. It has new sparkplugs about 20,000
C>miles ago. Still has original plug wires which I'm suspecting... or maybe a
C>fuel injector??? Gas mileage doesn't seem to be affected.
C>
C>Any other ideas that I may be missing?

You are on the right track; after 100Kmi the plug wires should be routinely
replaced. An easy check would be to have the engine running, and in total
darkness, spray a mist of water over the wires. You might see some miniature
lightning under the hood.

BTW, misfires generally set a DTC, and I believe you can pull them to view. Try
pressing and holding the [Off] and [Passenger Warmer] buttons on the Climate
Control panel simultaneously until all tell-tale lights in front of you
illuminate; then watch the DIC as the DTCs are displayed, current or history.
It will start with PCM. Exit by pushing in the big A/C Temp dial button, or by
turning the ignition off.

On Sat, 5 May 2007 11:15:38 -0500, "Cal" <net> wrote:
 
You're due for wires anyway. After 8 years and 135K miles you got your
moneys worth out of those originals. I'd start there.
FWIW
YMMV

"Bela" <cc.emory.edu> wrote in message
news:f1mv5v$6iu$org... 

Thanks for the info... actually the only code I got was PZM Bo533 which I
think is referring to a short in the Fuel Sensor... is the sensor easy to
get at and easily replaced?