Thread: Black smoke

While driving my car (2005 grand prix gtp) suddenly shuts off at the light then the check engine light came on then the rpm needle start moving all crazy the engine moves back and forth the headlights flicker saw black smoke from exaust, a message on the screen say reduce engine power (i appolgize for saying reduce engine tempature before) when the car did start their was power in the gas peddle now the car will not even turn on the car have under 120,000 miles if anyone have any idea what could be wrong please help

What car, year etc etc.


If its saying reduce engine temp, was it starting to overheat???

You said the check engine light came on, so its thrown a code. You'll need that code(s) to help figure out whats wrong with the car.

have you checked for fuel and spark?

the fuel rail has a valve on it, push it in see if fuel sprays out, it will spray, cover it with a rag, then push the pin.

then pull plug wire off the coil, hold or prop it 1 inch or less over the coil, then crank the engine, you want to see a spark jump to the plug wire from the coil.

if you can gat it run again, get it scanned asap, the code will tell a lot of the story and lead you in the right direction.

reduced temp maybe a bad temp sensor, its under the t stat. where the upper rad hose meets the engine.

what year is the car? is it n/a or s/c?

Originally Posted by cease1981

(2005 grand prix gtp)

sry guys he did put what it was in the first line haha

Originally Posted by Fivefingerdeathpunch

What car, year etc etc.


If its saying reduce engine temp, was it starting to overheat???

You said the check engine light came on, so its thrown a code. You'll need that code(s) to help figure out whats wrong with the car.

That is what i don't understand, starting the car the engine was cool within seconds the message pop on the engine started jerking then it shut off and would not start

Originally Posted by ericspecullaas

sry guys he did put what it was in the first line haha

He edited his first post..........

ur tooooooo slow.