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SOURCE: 91 nissan Sentra losses power at highway speeds
remove the front 02sensor and drive the car like that, remove means complety take it apart from exaust, if problem goes away or gets so much better then your catalitic converter at the exaust is restricted and need a new one
SOURCE: loss of power on acceleration. engine bucking.
check transmission fluid.change fuel filter and air filter.try changing up on where you buy gas .because bad gas causes problems.
SOURCE: saab 2006 1.9tid 150 acceleration problems to 2000
This is usually the first (cheapest) place to start. The MAF (mass air flow) meter is designed to sense and adjust the vehicle engine to changes in air temperature, speed, density etc. to keep your vehicle running properly. Since you already had your EGR replaced (yet another possible source of this sort of problem) I would tend to lean more toward the MAF. If you run any sort of aftermarket intake such as a k&n etc. these can cause problems for certain vehicles that are very sensitive to air flow as Saabs tend to be. Also the oil used on filter elements such as k&n can ruin the sensitive MAF. This unit is generally easy to fix (it's the little box with wires running to it) mid way up your air intake tube just past the filter. They aren't too terribly expensive either. Try this and hopefully this gets you up and running.
SOURCE: Loss of power on acceleration. Put new fuel
Check the catalytic converter, I have the same problem, replaced fuel filter, and crank position sensor, didn't help although the fuel filter was dirty. The car has no power, engine knocks horribly when trying to accelerate up a hill/on ramp. Starts, idles good, lousy power off a stop (should sqawk tires before traction control kicks-in)
LOSS OF ACCELERATION
It
can be fuel pressure issue or it's the problem with accelerator pedal or its
clogged filters causing there.
There
are many other possibilities. I suggest you to go through the list of help
links mentioned below, these will help you to confirm where the actual fault
lies: -------
-----------
http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html
---------
http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html
--------
http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html
-------------
http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html
--------
http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html
---------
http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html
---------
http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html
--------
http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html
---------
http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html
--------
http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html
-------------
These details will help.
Thanks.
ENGINE HESITATES WHILE ACCELERATION
LOSS OF ACCELERATION
It
can be fuel pressure issue or it's the problem with accelerator pedal or its
clogged filters causing there.
There
are many other possibilities. I suggest you to go through the list of help
links mentioned below, these will help you to confirm where the actual fault
lies: -------
-----------
http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html
---------
http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html
--------
http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html
-------------
http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html
--------
http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html
---------
http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html
---------
http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html
--------
http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html
---------
http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html
--------
http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html
-------------
These details will help.
Thanks.
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