Question about 1999 Pontiac Grand Am GT

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1999 Pontiac Grand Am GT 3.4 Liter V-6

My Grand Am just all of a sudden started missing really bad and sounds strange from the exhaust. It also has a smell that is kinda wierd not gassy but like something is real hot but its not overheating. Any ideas?

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Clogged catalytic converter put your hand by the tail pipe there should be a noticable flow but it should not be overly hot

Posted on Jun 09, 2008


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Pontiac grand am I had a diagnostic reading at autozone for diagnostic codes po128,po440 and p1189 don't know what they mean for a 2003 Pontiac grand am gt 3.4 liter and v6 engine vehical

PO128 -- engine coolant low or thermostat not working
P0440 - EVAP system malfunction, gas cap loose - Cat convertors missing from car can cause this
P1189 - Engine Oil Pressure Switch Circuit -- CAT CONVERTORS MISSING FROM CAR can cause this.

Jan 28, 2015 | 2003 Pontiac Grand Am

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Pontiac Codes P0300 and P0133 when cold won't start unless you punch the gas

White smoke in the exhaust is a sign of water in the engine. What is the level of the radiator? You may need a new head gasket or heads.

Dec 12, 2013 | 1999 Pontiac Grand Am GT

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1999 Pontiac Grand AM 2.4 liter DOHC L4 VIN "T"


1999 Pontiac Grand AM 3.4 liter V-6 VIN "E"


Hope helps.

Apr 24, 2011 | 1999 Pontiac Grand Am GT

1 Answer

Have a 2000 pontiac grand am 2.4 liter having trouble starting when cold or hot black smoke strong fuel smell and miss when startd but clears up and runs ok after that ?

sounds like a bad fuel pressure regulator,this located on the fuel rail that the injectors are on it has a vacum hose going to it,a small one,if you remove this vacum hose and there is fuel on the hose side this is bad even just a small amount,there should be no liquid on the vacum hose side,becarefull when replacing,you must relieve all fuel pressure 1st

Oct 01, 2010 | 2000 Pontiac Grand Am GT

2 Answers

My car has a really bad miss

Hello is your firing order...Number 1 cylinder being on the left bank as you face the engine
1994 Pontiac Grand AM
3.1 liter V-6 VIN "M"94760154.gif
Good luck...i hope this helps, please rate me a fixya.

Jul 19, 2009 | 1994 Pontiac Grand Am

1 Answer

Car only start for a second

sounds like you a major vacumm leak which would cause this problem. you can take a can of brake cleaner and spray differant places over itake area and if the idle picks up and smooths out you should be able to find the leak.

May 28, 2009 | 2000 Pontiac Grand Am GT

1 Answer

Car wont run

Do you have a check engine light on? What codes?

May 08, 2009 | 1999 Pontiac Grand Am GT

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Backfiring, rough idel

I would check the exhaust pipe a little closewr. White smoke can also mean a blown head gasket. Check the tail pipe to see if moisture is present. Also check coolant level. A blown head gasket can also cause related problems.


Nov 19, 2008 | 1999 Pontiac Grand Am GT

2 Answers

Misffire 1 & 2 detected multiple cylinder

the coil pack it's self should be numbered Starting left to right across the front it is 2, 4, 6 and across the back left to right it is 1, 3, 5. Emissonwiz (only the OHV, pushrod V6 was avaliable in 99 unless you had the 4 cylinder)

Nov 05, 2008 | 2000 Pontiac Grand Am GT

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