I have to turn the key n hold it so its turning over. Pressing on the gas continously or won't start or stay started. I then throw it into drive. Get up speed n does it again.. plz help!

coming up the mountain I hear loud noises likes its coughing it sometimes stalls and it putters aand backfires home

its just a coil pack it doesn't have a distributor it sounds like it has a cam and I don't have a computer to hook up to it.

You can hear the fuel pump. I actually unhooked the fuel line from the fuel filter cleaned it out. Its new, turned the key and gas came out of the fuel line. I could blow through the filter easily. Most ppl tell me its the cost. One car guy says the brain. I don't have a lot of money to put into the car so I'm trying to narrow it down as close as i can before i start throwing parts in it.so i don't know if i should replace the brain, or the sensor, ?

or so it will start. We live in Las Vegas NV and the temp. has been 105 to 110 degrees. The temp. but the temp. light doesn't come on.

What else can I check

the rough idle is from start to warmed up. when accelerating it surges? unless floored. recently it developed a large coolant leak. i cant tell exactly where its coming from be it seems to be from behind the water pumps pulley. the surge has been there since i bought the car. has 243k miles. 3.1 v6 chevy lumina euro. got map and maf codes saying bad compression or bad reading. vague code.

OBD code 35. I have already replaced the IAC, this seemed to work for a few days. Now, the code 35 is showing again and it idles extremely high. When I start the car with the IAC disconnected, there is no change. I can hear a vacuum leak, but, can't find it. Any suggestions?

if not how do the coils come off

so when im driving the car it drives good but when i get to a stop light or stop sign the car sputters and the car sounds like it wants to shut off. the rpms bounce at 500 and some time drops to 400 when at a stop.
and when the the rpm gauge drops the dash lights dim a little.
i replaced the IAC sensor, cleaned the throttle body, did a idle reset, put some injector cleaner in, and problem is still there. if anyone has any ideas PLEASE HELP

when im driving the car its good but when i stop at a traffic light, the idle rpm's will drop to 500 then shut off. but if i hold the brake and put a little pressure on the gas pedal the car stays on.and when i got it home i let it idle for a little with it still in drive and it was fine, but the rpm gauge was bouncing just a little, like it wanted to die. I did alternator check(good) load test on battery(good), and the spark plugs look good also. so what could it be?

I have a 93 chevy lumina the check engine light came on someone told I needed a tune up. Well before I could do it the car started then died out now it won't start. It will crank but not fire I recharged the battery got the spark plugs n wires oil change. Nothin now I was told that the engine module could b bad. I cant go to the shop one it doesn't drive n for two they said they only check when the check engine light comes on not the service light. So I need to know how I could check myself if one of the coils r bad.