Question about 1999 Chevrolet Monte Carlo

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99 monte carlo 3.8. has trouble starting and smokes white .could be a sensor but which one? scared to take to get it scanned cause of smoke. does not smell like anti freeze.also can hear an air vacuumunder hood

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I doubt it is a sensor. It sounds more like a bad set of rings or stuck valve.

Posted on Sep 12, 2009

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2 Answers

My 2002 chevy monte carlo keeps cutting off while i'm driving whats wrong with it


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I have a 99 monte carlo 3.8,started to run bad smoked white.i beleive it is a sensor but not sure which one,any help


if you have a bad sensor the check engine light would come on sounds like a leaking head gasket

Sep 12, 2009 | 1999 Chevrolet Monte Carlo

1 Answer

PO171


P0171 - Fuel Trim System Lean Bank 1
YOU WILL NEED TO AVE THE DEALER TEST THE O2 SENSOR FOR PROPER SWITCHING, RIGHT NOW IT SHOWS ALWAYS LEAN, THIS MAY BE THE SENSOR OR THE ENGINE MAY REALLY BE LEAN ON FUEL AIR RATIO, AS FAR AS THE SMOKE GOES THE 2 ARE PROBABLY NOT RELATED, HOW MANY MILES ON CAR? IF THE MILES ARE HIGH THEN REPLACE THE O2 SENSOR ON THE CYLINDER BANK WHERE # 1 CYLINDER IS LOCATED, THE SENSOR IS THE ONE BEFORE THE CATALYTIC CONVERTER.

May 08, 2009 | 2000 Chevrolet Monte Carlo

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1998 chevy monte carlo ls 3.1 l , 6 cyl


That white cloud is caused by a blown head gasket, the knocking noise could be, a rod bearing, thrust bearing, somewhere in the valve train. Replace the head gasket and see if it still knocks, and change the oil and filter too. If it still knocks, than you have bigger problems.

Jan 31, 2009 | 1998 Chevrolet Monte Carlo

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1987 Monte Carlo


sounds like a heater core "antifreese" leak

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