o.k here is the deal my 88 sse now has 76,875 original miles and ran great for the last 2 years i had her. but for the last month or so i've noticed a change in her power getting worse day by day. but i just had a baby boy who is now 3 mnts old so i had no time till now. when im at a red light and it turns green i can put my gas pedal to the floor and she will take off quick but feels like a 4 cylinder. it then takes about a min to get up to 50 60 mph., i was even passed by a hot girl in jetta on the high way who waved
(i think bye) to me. so now im here asking for help from you guys.

here is some things i did to bonnie in the last 8 months..

new spark plugs and wires, new filters all over entire car, new m.a.f.*, new radiator, new transmission fluid lines and brake fluid lines on entire car, a full 6 point tune up, oil change, i had my exaust fixed as i bottomed out and the pipe slit into 2 so i had it overlapped with a sleeve and clamped twice on both sides of sleeve but it still sounds a lil loud like a honda civic hatchback.

and when i hook up my digital code scanner it reads everything is fine.?
could it be a bad 02 senser?

exhaust fixed meaning you replaced your cat? are you getting any intermittent codes from this?

i did replace the cat and the header pipe at the same time, and no im not getting any intermit codes, i even unplugged the battery and computer and then plugged it back in and tried again but no codes, im dumb founded by this one. i even have the original gm shop service manual from 1989 for my 1988 sse... its bigger then a phone book but dont help with this problem

id say to check the fuel pressure, and maybe try running fuel injector cleaner threw it to see if that helps at all

as far as i know, the o2 sensor wont really cause for there to be a very large loss of power..what kind of gas mileage are you getting?

and my gas millage seems good i guess. i put $20 a week to 8 miles a day at $2.69 a gallon. i i always use fuel injector cleaner atleast every 2 weeks... how do i test the fuel pressure?

if those numbers are right, that would mean youre getting 8 mpg this is with filling up each time right? not just throwing $20 worth of gas in?

you need to get a fuel pressure tester, which i believe are for sale at most auto parts stores. heres an example of one http://www.actron.com/product_detail.php?pid=16174



when was the last time that the fuel filter was replaced?

no i dont fill it up i wait for the tanbk to hit a quarter mark and then i throw $20 every week.

oh, well then my calculations are off. i suggest just filling it up each time gas goes down