Question about 2003 Pontiac Grand Am

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Wont go past 40

03 grand am wont go past 40 miles per hr when u step on the gas and it will when u left of the gas a little and bogs down when u step on the gas

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The catalytic converter is clogged. You will need to replace it.

Posted on Aug 02, 2009

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Posted on Jan 02, 2017

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If 360 km per hour is equal to 40 miles per hour, please show me how to calculate using formular


360 km/hr is NOT 40 miles/hr.
1 mile is about 1.6 km
To go from km to miles, multiply by 0.62
To go from miles to km, multiply by 1.6

Kilometers per hour to Miles per hour

Feb 23, 2017 | Cars & Trucks

1 Answer

2006 maxima se starts@idle ok but not much power 20 mpg


you may have a restricted catalytic converter plugging up exhaust flow and bogging down the engine. on the vq35 engine there are 2 precats located right under the exhaust manifold and it is then plumbed down the downpipe and into the main catalytic converter. i would remove the downpipe and inspect the the condition of the catalyst.

Oct 18, 2014 | 2006 Nissan Maxima

1 Answer

My 88 toyota camry wont accelerate when i step on the gas pedal


tests:

cruise at say 45mph ok?
if i accelerate , it bogs then catches up?
if i accelerate, it bogs and never catches up?
if i go WOT, wide open throttle it has full power up a hill after the bog?

these test , are the KEY tests.
this tells me what is wrong.
i hope the car is tuned up, if not , why no? the 60k mile done?

Jan 25, 2014 | 1988 Toyota Camry

1 Answer

The car was running fine, it hesitated once, then about a half a mile later it began to have no power wnd when I gave it gas it would bog down. Then it died and would not start. I have got it to start...


it sounds like your fuel pump may have gone out disconnect the fuel line at the fuel filter or the fuel rail which ever is easier to get to, then try to start the car if fuel does not spray from the line you will know that it is the problem.

May 12, 2011 | 1989 Chevrolet Camaro

1 Answer

1995 gran voyager se rallye 3.3. 145,000 miles.runs great but it will act like its running out of gas but if you floor it, it will run up too 100 miles per hr no problem but then it's back to seems like...


SOUND LIKE A INTAKE GASKET LEAK.BUT IT COULD BE OTHER THINGS LIKE EGR VALVE LEAKING OR PVC PLUGGED.WORN TIMING CHAIN AND CAMSHAFT LOBES ARE WORN.LEAKING VALVES.DIRTY OR CLOGGED FUEL INJECTORS.AND FAULTY IDLE SPEED CONTROL..

Oct 25, 2009 | 1995 Plymouth Grand Voyager

1 Answer

1991 geo metro car misses at high rpm


try this first. the older the car; the more problems the ethanol gas is causing. replace the fuel filter. you'll probably see what you think is dirty gas; it is; in a way. it's the ethanol goop that stays and ruins engines, and fuel systems. install the new filter. add a whole can of SEAFOAM to at least a half tank of premium gas. replace fuel filter before next 500 miles.add can of SEAFOAM every 3000 miles after that, and that will clean the valves, the goop, the carbon and keep your tank and lines free of moisture, It might take afew miles(depending on the clogging), but it should work. I hate ethanol gas.

Aug 30, 2009 | 1991 Geo Storm

1 Answer

Acceleration - cannot get above 40 miles per hr.


If the engine revs up while in drive and running at 40mph, your transmission is probably slipping. Try checking your transmission fluid level. If it is OK, I would get it by a garage to have them look at it to cofirm.

Mar 30, 2009 | 1998 Land Rover Discovery

1 Answer

Won't go past 40 miles per hour


no not muffler problem could be bad gas or TPS sensor how many miles you have on it?

Nov 24, 2008 | 1999 Jeep Wrangler

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