Re: 98 Contour Chokes when Accellerating
On Tue, 01 Mar 2005 12:25:57 -0500, Tom Adkins
>> 1998 Ford Contour SE, 2.0L 4-Cylinder DOHC
>> Ok, hereís a quick run-down of the past 2 weeks or so:
>> Problem 1) Check Engine Light: Bad O2 Sensor
>> Symptons) Slightly jerky driving
>> Solution) Replaced both O2 sensors
>> Problem Fixed!
>> Problem 2) Check Engine Light: Misfire Cylinders 3 & 4
>> Symptons) REALLY jerky driving
>> Solution) Replaced all 4 spark plugs AND wires
>> Problem Fixed! Runs better than ever!
>> 3-4 days later...
>> Problem 3) Check Engine Light: Ignition System Malfunction or Misfire
>> Symtpons) When accelerating from a complete stop, RPMs drop to almost
>> nil, sometimes (becoming more frequent) stalling out. Also, on the
>> interstate when I hit around 75ish, I begin slowing down. If I try to
>> punch the gas, it drops in RPMs, then when I let up a little, it
>> downshifts and accellerates. Also, when giving it gas, it has a much
>> louder/deeper roar/moan than it used to.
>> And since Iím not very car-litterate, Iím gonna try hard to describe
>> this next symptom... When I start my car, it seems like the engine is
>> about 1/2 second off from everything else. I can here the starter
>> finish itís thing, but donít actually here the engine immediately.
>> The guy at auto zone said the engine code was a generic manufacturer
>> code that could mean anything. He suggested something about my
>> ignition coil and come ind of controller something-or-other.
>> Any clues? Thanks!
> I would suggest having someone other than the "guy at Auto Zone" diagnose your car.
>Those folks are not technicians.
you dont have a ticket either
> My suspicion is that your catalytic converter is plugged (either causing, or caused
>by a rich fuel condition). I suspect this initially caused the "bad O2 sensor code".
>The sensor was likely not "bad". It was reporting the rich fuel condition. The plugs
>became fouled due to the rich condition and the new ones masked the problem
>temporarily. This is not a diagnosis, but a hunch based on your description.
> It could be that your misfire is caused by a plugged converter which is in turn
>causing the rich condition, or that the misfire is causing a rich condition and loss
>of power. It could also be something as simple as a plugged fuel filter causing a lean
>condition, misfire and loss of power.
> Before you throw any more parts at the problem, have it properly diagnosed.