Vehicle hesitates when during acceleration runs 2005 lincon ls

limits vehicle speed and access to vehicle systems.

You could have air in your coolant, causing this false reading. the hesitation could be related, if the air 'bubble' found its way to the coolant sensor.

Check the water temp sensor. I'm not too familiar with Lincoln, but on GM vehicles a bad water temp sensor will tell the computer that the engine is cold causing it to dump more fuel than it really needs thus flooding the engine. The only way to start the engine is to open the throttle body enough to get the air/fuel ratio right so it will burn. If that doesn't work look at your EGR system to make sure the valve isn't sticking. It should move freely. If it's binding then it can cause similar issues, though not as likely.

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: -------
Jerks and Hesitates During Acceleration?
http://technoanswers.blogspot.in/2012/07/2004-dodge-town-country-jerks-and.html
-----------
Loss of acceleration?
http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html
---------
Headlights flickering and car hesitates to start?
http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html
--------
How exactly the Vehicles Accelerator Cable works?
http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html
-------------
How exactly Vehicles Accelerator Pump Diaphragm Works?
http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html
--------
2000 Toyota Avalon: Engine Lean Codes and Knock Sound on Acceleration?
http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html
---------
2004 Toyota Avensis: Acceleration And Deceleration makes noise on Front End?
http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html
---------
Wheel hop under hard acceleration?
http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html
--------
2009 Chevy impala accelerator pedal sensor?
http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html
---------
Nissan Pathfinder stalls and bucks on Acceleration?
http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html
--------
Acceleration lag problem?
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: -------

Jerks and Hesitates During Acceleration?

http://technoanswers.blogspot.in/2012/07/2004-dodge-town-country-jerks-and.html

-----------

Loss of acceleration?

http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html

---------

Headlights flickering and car hesitates to start?

http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html

--------

How exactly the Vehicles Accelerator Cable works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html

-------------

How exactly Vehicles Accelerator Pump Diaphragm Works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html

--------

2000 Toyota Avalon: Engine Lean Codes and Knock Sound on Acceleration?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html

---------

2004 Toyota Avensis: Acceleration And Deceleration makes noise on Front End?

http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html

---------

Wheel hop under hard acceleration?

http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html

--------

2009 Chevy impala accelerator pedal sensor?

http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

---------

Nissan Pathfinder stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

--------

Acceleration lag problem?

http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html

-------------

These details will help.

Thanks.

Sounds like either a catalytic converter issue,or a fuel pressure issue.

the fan has a low and high speed or some have 2 fans. It comes on low speed when the temp starts to climb or when you turn the a/c, defrost, or mix mode (it turns on when the a/c compressor kicks on. If the temp of coolant gets to about 230 F, then the high speed kicks in.

What is your doing? Very nosiy sounds like high speed. Could be a defective ECT - engine coolant temp sensor.

your fuel injectors are clogged

It could be a couple of issues:

1. Since you mention 30mph a speed when the transmission wouild normally shift into 3rd, and again at high speed (you didnt' mention MPH) where it would possibly shift again, it's possible that the transmission is slipping. Check the fluid or better yet, if it's got around 50-60K on it, have the fluid and filter changed.
2. Another cause could very well be fuel related, be it a filter, fuel sending unit, or the pump itself

I'd start with the transmission fluid. Check it and if the color is starting to brown, or gives a slight burning smell, have it changed along with the filter. If it's just low, then that definitely would cause the transmission to slip.
Best of luck and post back with any other concerns.
Greg

change the fuel you are using. try some fuel system cleaner. this is a petty issue, every vehicle develops issues over time.a bmw owner complains about hestitations, a bmw driver enjoys the ride. DEAL WITH IT!!!