Service Engine Soon Light

2003 pontiac grand am check engine light on, obd2 reading code PO300, and bad smell coming from car

Burning smell and pipe just past resonator is getting red hot

Engine idles rough for about 10-15 seconds after a cold start. I can hear the engine and exhaust speeding up and then back down, and the car shakes a little during the rough idle. I replaced the spark plugs a couple months ago along with the spark plug cables, put in a new air filter, and have tried different gas additives such as marvel mystery oil and seafoam. None of that has worked.

I'm having the same issue. Code is multiple cylinder misfire. Have done fuel pressure regulator, fuel filter, MAP sensor, MASS air flow and air filter.

01 Grand am 3.4l

2003 Pontiac Grand Am 4 cyl 107301 miles

I drove my car yesterday and had no problems. It was really cold last night so I decided to let the car warm up but this morning when I went to start it the "service engine soon" light came on. When I started my car it had a slight burnt smell and then when I started driving my car hesitated when I tried to accelerate and when I came to a stop sign it would vibrate. Just now when I started it I could smell fuel and it sounds like something is rattling. What could this be?

I have a 2003 Grand Am with a 4cyl auto - over the last several weeks the car has been running like chit, I parked it downtown ran into a meeting returned 15 minutes later it wouldnt start - seemed to be a fuel issue, called for a tow, went back out 45 minutes later and it started like new.

SES light came on P0171

car runs great if it sits for 1 hour - not 59 minutes. If I attempt to start it before 1 hour I have to pump the crap out of the gas pedal to get it to start, then to keep it running same thing, after about 3 minutes it will drive normal again. BTW while it is trying to start during this process it often stops running with a 'thud' or 'clatter' very rough, once it starts I am good to go.

Replaced fuel pump, cleaned MAF sensor, replaced fuel sending unit, fuel filter, plugs, changed service stations for gas.

Nothing is working, I work downtown portland oregon and have to move the car several times for my job, its a bitch to constantly deal with this - I have seen several folks talk about MAF, PCV, O2 sensor - any advice would be appreciated.

I have a 2003 Grand Am with a 4cyl auto - over the last several weeks the car has been running like chit, I parked it downtown ran into a meeting returned 15 minutes later it wouldnt start - seemed to be a fuel issue, called for a tow, went back out 45 minutes later and it started like new.

SES light came on P0171

car runs great if it sits for 1 hour - not 59 minutes. If I attempt to start it before 1 hour I have to pump the crap out of the gas perdal to get it to start, then to keep it running same thing, after about 3 minutes it will drive normal again. BTW while it is trying to start during this process it often stops running with a 'thud' or 'clatter' very rough, once it starts good to go.

Replaced fuel pump, cleaned MAF sensor, replaced fuel sending unit, fuel filter, plugs, changed service stations for gas.

Nothing is working, I work downtown portland and have to move the car several times for my job, its a bitch to constantly deal with this - I have seen several folks talk about MAF, PCV, O2 - any advice would be appreciated.

I took my 2003 Grand Am GT to the shop and got it hooked up to a machine to find out what was wrong with it because my "Service Engine Soon" light came on. The code that the machine gave me was P0446 with the definition as follows:
EVAP (evaporative emission system) purge/vent solenoid circuit condition
Explanation:
The solenoids and system wiring are monitored for opens or shorts
Probable Causes:
1. Purge or vent solenoids defective
2. Check connector & Wiring
3. Fuel saturated vapor canister
4. Failed EVAP vent solenoid

My question is what can I do to fix this? What exactly could the problem be? What could cause this problem? What parts do I need to fix the problem?

Loses some power ive had it for 3 yrs never gave it a tune up or changed any sensors check engine light came on a while ago and I put a new gas cap on the light went off lately ive been driving long distances and I give it oil changes when its due and air filters just started making noise have some ideas just need a pros advice

I have a 2003 Pontiac Grand Am. I been having it for 3 years. It has 209000 miles on it give or take a few. Recently it has been making some awful putting noises coming out of the exhaust pipe, also I have noticed fluid coming out of the pipe as well. It hasn't cut off on me, when I drove it to work every time I stopped it sounds like it is going to cut off. Also the check engine light flashes when I'm driving it, and stops once I stop at a stop sign or a street light. Would like to know what could be causing the trouble and is it expensive to fix? Also I sometimes feel like it is shaking, if that makes any since. Thank you and looking forward to hear from you.