I suspect you may have a clogged catalytic converter - but, the smells
before / after lead me to think the air pump bypass to it (I think it has
one) might be damaged, blocked, or not opening. I would think you would get
an error since there are so many O2 sensors nowadays but it's worth a look.
The other chance would be an injector - look at the wires to all of them
Some mechanics can tell how an injector is working by listening - they use a
wood dowel or a long screwdriver, touch it to the injector, then stick the
other end in an ear. If you get it just right, the stick will transmit
sound but it has to hit the right spot and also block the other sounds,
plugs up your ear. I tried it, I could hear the clicking but clicking or
not is about as skilled as my ears got. You could try it.
I did my 100k tune up on my 95 CV a couple of months ago. New plugs and
high quality wires. It seems very happy. Oh, I did the 60-70k cleanup of
the EGR passages, too. Easy. That's about it since I got it at ~55k...
Good luck -
Paul in Dayton
I own a 1995 Ford Crown Victoria. It got 98000 miles on it, with a tune-up
in the last year or so.
For the past 8 months, the smell from the underside of the car smelled like
rotten eggs. Or, rather, old egg salad. My feeling was that the catalytic
converter(s) were going bad and needed to be replaced. I'm not sure this
was the cause but I remembered others talking about similar situations.
Last week, when backing out of my driveway, my car lurched a little bit. I
don't know why it happened, but since then the car has not run right at all.
Later that day the check engine light came on. I had the codes read, and it
was P0303. Cylinder 3 was misfiring.
I checked all of the wires from the split distributorless arrangement. All
wires sparked. I pulled the sparkplug from cylinder 3 and it appeared to
look OK. It had a little carbon buildup on it but nothing I haven't seen
before in good sparking plugs. When I turned on the car and pulled the
wires off one at a time, the car's idle dipped slightly, so I am confident
that all plugs are firing normally. I am going to replace them just to make
sure, but I don't think the wires or the plugs are bad.
I replaced the fuel filter but that did not help. I also checked the PCV
value and there is vacuum, so that appears to be working correctly.
Since this incident, the rotten egg smell has gone away, and has been
replaced by a burning smell.
I have no loss in real power of the car. I can still accelerate rather
well, and shifting gears is smooth. The only difference I hear and feel is
when taking off and when idling.
College Station, TX
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