My Sunfire is having a problem with accelerating. Started yesterday
with no power climbing a hill. More I would push down on the gas, the
slower I would go. As I left off the gas it would smooth out, then
when I would push down it would die down. after making it to the top
of the hill, it would smoth out. Made it home with no issues. But did
notice if i would push down on the gas, it was dieing out. As long as
I pushed down slow on the gas it was ok. When I got home, I put it in
park. Next I stomped on the gas, and it would pop and miss. Today I
changed the inline gas filter and the plugs. Also changed the Oxygen
sensor. This car has 136,000 miles on it. I have been reading my
service manual for this car. Could it be the EGR valve or the Throttle
position Sensor.I'm guessing! Could someone help?

"ford" <rauma (AT) mymail (DOT) emcyber.com> wrote

So - what happened after you changed the plugs?

--

-Mike-
mmarlowREMOVE (AT) alltel (DOT) net

This engine does not use an EGR valve.

Sounds like a coil pack to me.


"ford" <rauma (AT) mymail (DOT) emcyber.com> wrote

On Apr 7, 11:51 pm, "Scott Buchanan" <t12... (AT) pacifier (DOT) com> wrote:
After changing the plugs, their was no change. I even layed the coil
pack to the side and ran plug wires to the plugs, and checked each
plug with a test light as I gave it gas. The spark was strong on each
plug. I even took out the Injector regulator and checked the screen.
That was clean. It seems that the fuel pump is fine. I had a lot of
pressure. Also started right up after checking it.
Bob

"ford" <rauma (AT) mymail (DOT) emcyber.com> wrote

A stopped up exhaust can cause those exact symptoms. When it is a stopped
exhaust, you would hear a swooshing sound(as it exits tailpipe) while
accelerating & not gaining speed s

On Apr 8, 9:45 am, "sdlomi2" <sdlSPAMo... (AT) yahoo (DOT) com> wrote:

There is no check engine light on. If it's the Cat converter. How
do you check it? Could I take out the o2 sensor out before the Cat and
see if it runs better?

"ford" <rauma (AT) mymail (DOT) emcyber.com> wrote

convertors, sometimes by hand: bump on the COOL cat and if it rattles
inside, they know the insides are all to pieces and bad. Also, they check
difference in pressure going in relative to that going out, which can
determine whether it's good or bad. We generally out here in the field
don't have the tools to do this pressure-checking: we pretty much know from
'feel', and from the 'whooshing' sound under acceleration, and from
experience when one is bad. So we let the muff. shops verify and replace if
needed. s

"sdlomi2" <sdlSPAMomi2 (AT) yahoo (DOT) com> wrote

Usually if the converter is plugged the engine will run hot and smell hot.
And it gets worse quickly. Exhaust shops check the converter with an
infrared thermometer.

Al

On Apr 8, 2:58 pm, "Big Al" <s... (AT) qwest (DOT) net> wrote:
Al and All
I think we"re getting somewhere. I did notice it smells hot after
running awhile. So I took out the O2 sensor and started it up, Ran a
little better. So could I drop down the exhaust after the manifold,
and start it up. I have my ear protection ready! Will it breath better
to tell me that's the problem?
Bob

"ford" <rauma (AT) mymail (DOT) emcyber.com> wrote in message

If the converter is plugged and you drop the pipe the engine will wake up
instantly. If you find it is the converter, don't forget the muffler will
sometimes get plugged with media from the converter. If you're doing it
yourself, disconnect the converter where the hot exhaust won't burn
something nearby. It gets very hot very quick.

When you had the O2 sensor out, was the exhaust coming out of the hole with
a lot of force or pressure? If the converter is plugged it will.

Al