Engine power loss and sputtering
It seems like I have a loss of power when accelerating and driving around 50-60 mph at ~2k rpm. The car also sputters and rpm begins to fluctuate while driving. Is the fuel injector bad or clogged and how would I clean/replace it? I want to fix this myself but I'm quite the car newbie. Thanks!
Dear PoppaQ-- I could list 25 reasons why your car is sputtering while driving, but let's start with the most simple solutions first. It may be your fuel injectors. Buy some fuel injector cleaner at a parts store. Run a tank of gas with that and see what happens. I would also check my airfilter. If it is clogged or dirty it could be contributing to your trouble. If neither of these work we may have a clogged fuel filter, some spark plugs or spark plug wires in need of replacement or even a bad fuel pump. Start with the easy cures and let me know how you do. Good luck from Bovan.
I tried filling the tank twice with 93 ultra/premium gas and a bottle of fuel injector cleaner each, it still sputters and loses power when accelerating at first. When the weather clears up I will pop the hood and check the air filter. I think I just replaced it last year...
I have a 2008 Pontiac Torrent. While traveling home on the freeway at 65mph the engine began to stutter, especially when trying to go up any type of grade. I slowed down to 50mph before the "stutter" went away. I had a similar problem while traveling in Florida. At that time it was determined to be a "blown" spark plug, whatever that means.
I have a 2003 grand prix and recentl went on a road trip. I got worse than normal fuel mialage so I change my fule filter. It was fine for the drive home but I now get the sputtering when taking off until I get up to higher rpm's. Is it possible that I am sucking in air through the fuel filter connections? Or could changing the filter have caused any other problems with my car such as the air intake sensor (not sure what its actually called.
My 1999 GTP experienced the sputtering problem at 28,000 miles and it was the result of a defective wiring harness. I assume this to be very unusual but it can be the cause. Best of luck.
did u have loss of power with the sputtering...because i do big time...i have a 99 gtp 2dr coupe and it has 180000k on it..if im at a dead stop and i punch it the tires wont spin and its sputtering....so many people r trying to tell me bull shit and that i need a new engine...i dont know what 2 do...and it feels like i can only trust a some one with a gtp that went threw the same thing.....
hey man im going threw the same thing and tried the same things....im lost....did u find out what the problem was...if so let me know what it was..because im lost...people r trying to say i need a new engine...
My 3.8 Supercharged engine created about the same horsepower that you would expect from a YUGO automobile until the wiring harness was replaced. The same sputtering and shaking that you report. My engine had only 28,000 miles on it at that time and now has 122,518 miles and runs smoothly and produces a bunch of power. I still enjoy owning it.
are you throwing a CEL? because if your car is running like this im guessing it is. go get it scanned and see what it is.
For all you PONTIAC folks,Google pontiac problems,you will be sent to a Grand Am site,heck im even on their.lots of great info on pontiacs.a lot of guys their really know their stuff about theses cars.
go to auto zone, they'll throw it on a scan tool for you for free. that should tell you the issue, or at least point you in the right direction. most likely in my opinion? MAF sensor. when that goes, the computer doesn't know how much fuel to put into the engine so it repeatedly switches from too rich, to too lean causing the engine to run like garbage while trying to maintain a steady rpm, and have insufficient power under accelleration.
my 99 gtp dies out when the temp gets to around 200 but it will idle till its hot as hell but it wont drive. u have to wait for it to go back down below 200. while ur driving feels like its not getting any gas but the lights flash so i think its electical. hooked it to a scanner and it wasnt throwing any codes my first car and already replaced fuel tank pump. tried fuel injector cleaner exaust system.
Since you have stated on repairing and working on the car by yourself, I can assist you further on this count. I too like tinkering with my cars ( a Seville and an Outback) but did not know the details of car maintenance. I regularly look up these http://www.automotix.net/autorepair/diy/ which are very easy to understand and enable you to perform skillful tasks on the car.
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