I had the OIl changed about a week ago. Yesterday the car was running
sluggish, like only on 4 cylenders. (has 8) After i gained speed it would
pick up and run normal. At first i thaught it was a spark plug problem. I
look under the hood, and my oil fill cap is gone. I immediatley go get a
new on and put it on. The compression is a lot better when idling and
running in low gears. But sometimes it is still sluggish. It runs ok at
higher speeds... What could be the problem?
I thaught it was bad compresion from not having the cap on, cus when i put my hand over the hole it would idle better and at a higher RPM ...
I also thaught maybe a fuel problem, but it probably wouldnt idle at all, and studder when running due to lack of fuel...
any help? :screwy:
well i never hear it "backfire"
it is just sluggish when taking off... then all of a sudden it like, gains all its power again
sometimes when it idles (usually around 900 rpm) it will drop to 6 or 700 and thats when you know the problem is going to happen when taking off into 1st and 2nd gears
Run some fuel injector cleaner through it. Also, do a tune up.
Misfiring is where the car feels like it's running lower than the tach is
showing, because the spark or fuel isn't getting to the cylinder properly.
Backfiring is where the cat converter burns off fuel that doesn't burn in
the combustion chamber.
Sounds to me like an accesory problem. Do these problems still go into effect when you have the AC on?
and BTW - I shun you for paying 100 bucks to have your oil changed by 'professionals'
Just think of it as saving your gas mileage at a stop light or a lower rpm :laughing:
I had same problem in a z28 i owned....i went and got my Throttle body and fuel system cleaned and it stopped boggin out like u are talking.....go ahead and try that....it may do the trick :thumbs:
its not an AC problem, it happens all the time. It sounds like it is misfiring. feels lower RPM then it shows. and runs like its half power till i punch it.
I changed the plugs lastnight and nothing changed.
also, im very busy. so i had my oil changed on lunch break. :D normally i do it myself. (never have them do it again)
If you're sure it's misfiring, which I don't think is, as mis-firing really
goes into effect as rpms climb, then you need to check and clean the 3
components that make the piston head south. Air, fuel, and spark. I'm not
sure if the 97 gt was distributor-less or not, but try checking the spark
lines for junk on the end, if you;ve got a distributor, unscrew it, and
check the rotor and clean out any junk in there. This is going to be the
cheapest and fastest way of the three components. Fuel injectors, I've
never had to deal with, and I doubt that it's a oxygen problem. Try my
suggestions and get back to me.
and BTW - I was serious about the AC, I've seen that cause motors to idle too low and feel like it's mis-firing.
it does run like crap with the AC on..thats why i "haha"...
ive done all these steps. took it to my brother who works with our uncle as a machanic and he said it is the 02 sensor... its faulty, sometimes it works and soemtimes it doesnt... he 'THINKS' that is what it is anyways
Godlaus, you are wrong on many accounts, please stop giving out false
information...first off, a misfire doesn't necessarily "go into effect as
the rpm climbs". Second, misfiring is NOT "where the car feels like it's
running lower than the tach is showing" because even when it's missing the
tach will show it. Third, a backfire is NOT "where the cat converter burns
off fuel that doesn't burn in the combustion chamber" because it does that
all the time anyway...funny I don't hear cars backfiring 8,000-16,000 times
per minute. Also, why would cars not equipped with catalytic convertors
backfire also? Hmm...shoots that theory down.
THINK, TYPE, SUBMIT
As far as your problem...is the SES light on? If it is, it could be a number of things, i.e.-bad wires, collapsed plug(s), a valve cover gasket leak. If there is no SES light, I would lean more toward a possible intake leak...I believe that year GT was equipped with the black plastic intake that was prone to warping and cracking. Get back and let me know what's going on.
Well, got my ass handed to me. Was trying to help
Turns out it was simply an o2 sensor that was faulty. Sometimes it would
work and other times it wouldnt.
crazy how that little part can **** up your whole cars performance. hehe
thanks for the help guys :smoke: