hey guys here's the situation.

97 SE with about 111,000 miles on it. auto

between 1-3k rpms, the car is fine acceleration wise and whatnot.
above 3k rpms, i get a slight vibration in the gas pedal...the engine sounds a little too loud, and the acceleration is not as strong as it should be. it's not exactly slow or anything, but i guess it just doesn't feel like it's pulling smoothly.

last changed plugs at 70,000 mi. use only 93 octane from exxon/mobil. mobil 1 oil, changed every 5k miles. new suspension/tires/brakes/etc. no codes thrown by ecu

any ideas where to start with this one?

 

clean your throttle body

 

I also feel vibration in my gas pedal. ive started to learn to live with it. Don't reallyu know what it is. BUMP

 

Sounds like a slight misfire. It could be caused by a clogged fuel injector. Find a shop that does a fuel system & injector cleaning. The real thing, not an additive you put in your fuel tank. You could also have a weak coil pack, secondary side that fires the spark plug. A weak spark actually gets blown out under a load. The ECU may not be able to detect the secondary side fault in a coil pack because it doesn't see it electrically. Crank sensors POS and REF are there to help detect misfires from injectors and spark, but if the misfires are relatively small, once again the ECU will not be able to report the error.

I'd start with the fuel system cleaning, then look at your coil packs. A fuel system service is a good maintenance item & should run you about 100 bucks. It's cheaper to start there then the coils, because if that doesn't work you haven't thrown money away. Have your fuel filter changed with that service as well.

To check for a weak spark, remove each spark plug and very carefully look at the condition of each one. The coil that has the weak spark will most likely have more carbon build up and it's color will differ from the rest of the plugs.

Good luck!

 

cleaned it about a month ago....

 

hey do you know of any good shops by you? i'm out in staten island, so jersey is pretty much ok in my book to bring my car into. all the shops here suck and are pretty unreliable.

thanks

 

I have a 97 SE with 137,000 miles on it. I have similar issues as well but they come and go...sometimes the car runs perfectly fine and sometimes it runs crappy....with vibrations and loss of power...I think it has something to do with the outside temprature. I think as the car becomes older and engine parts become more worn out, it become more sensitive to temprature differences and tolarences. Bottom line...car is getting old, it will never run like the way it did when you bought it brand new.

-Ken

 

tell me it's not true!! i have the same symptoms.... but then again there are people on the org that have like 150,000 miles on their rides and it seems like they're fine.

 

well those people might live in area's which colder. Usally engine tend to run better in colder tempratures because air is more dense and so you get more power out of the car.

Sorry bro...age happens to us all!

Face it, your car is slowly dieing

 

ignition coils are a maintaince item. after 100,000 miles they do wear out. you should replace them as you replace the cap and rotor and wires, plugs on a distributer.

they are like 50 bucks a piece look to spend $300 on coils and $10-60 on plugs.