Darren111 Posted February 23, 2009 Report Share Posted February 23, 2009 my 92 deville 4.9 just started smoking real bad,and the smell of raw gas is unreal, smoke so heavy i will get a ticket if i drive her, i had 4 gal of gas in the car when i started it up in the morning, drove out the driveway but had to turn around because of the smoke and gas smell. when i pulled in and put her in park, the engine had a roll. and the speedometer kept going up 4mph 5,6,7,8 and down with the roll of the engine(like a tachometer) but i was at a dead stop, in park... i let it idle.. it did,, but with a little miss. checked all the vacume hoses, everything obvious, reved it up, let it idle down.. i did this for about 35-40 min, smoking the neighborhood up. then it stalled and would not restart, looked at the gas gauge and it read E.. i said no way i burned up 4gal of gas... i had exactly 2 gal in a gas can for my yard equipment, so i put it in. my gauge read 2 gal. turned the key, let the pump pick it up, it started, let it run, it still smoked when i reved it up and the smell of raw gas,, did this for about 4min or so, it stalled, looked at the gauge, E out of gas again. i checked the code's and 31 was in.. checked the book, map sensor... anyone ever have a problem like this?, the speedometer going up and down confusses me. the book say's the map sensor controls the air to fuel ratio and timing, this makes sense, but could it burn that much fuel? any help would be great, thanks, Darren Link to comment Share on other sites More sharing options...
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