Question about 2002 Lincoln LS

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Drive by wire nightmare! just seems like throttle becomes disconnected. the dealer says 2 bad coils(which were just replaced) i just got it back almost $400 later same problem. i think its the motor on the inlet of the throttle body? any good ideas appreciated. this is a 2004 ls v6.

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  • Lincoln Master
  • 5,537 Answers

The TPS throttle position solenoid regulates fuel and spark. It is on the airhorn, has 2 screws and 1 connector. It is THE throttle. You are describing the "idle speed motor" which is an enrichment system.

If you are getting "check engine" lights you may just want to go to Autozone or Oreillys for a free scan. It may help to go there whether you have something lighting up or not.

Would be interested on the outcome.

Posted on Apr 26, 2010

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Is P1516 code caused by bad TAC?


YOUR VEC. HAC ELECTRONIC THROTTLE BODY UNIT SO IT USES VOLTAGE SIGNALS TO CONTROL THROLLTE BLADE IN THE THROTTLE BODY. WHAT I HAVE SEEN ON THE JOB IS A FEW DIFFERENT ISSUES THAT CAN CAUSE THIS PROBLEM. FIRST OFF THERE IS A UPDATE FOR THE PCM TO ADDRESS THOSE CODES, BUT YOU WILL HAVE TO TAKE IT TO THE DEALER FOR THAT. SECOND THERE IS ISSUES WITH THE ACTUATOR ON THE THROTTLE BODY BINDING UP AND CAUSING THE CODES. THIRD THERE IS A YELLOW WIRE COMING OFF THE THOTTLE BODY CONNECTOR THAT BREAKS INSIDE INTERNALLY AND CANNOT BE SEEN TO THE NAKED EYE. THE BEST WAY TO TEST THAT IS TO GRAB THE WIRE ABOUT 5 INCHS FROM THE CONNECTOR AND TUG IF IT FEELS SPONGY OR BREAKS THATS YOUR PROBLEM. fOURTH THERE IS A GROUND AT THE BACK OF THE PASS. SIDE HEAD THAT BECOMES LOOSE. WHEN I GET ONE OF THESE VEC.S IN MY SHOP I UPDATE THE PCM REPLACE THE THROTTLE BODY UNIT AND CONNECTOR TO IT AND CHECK THE GROUND ON THE BACK OF THE HEAD IF I DON\'T DO ALL OF THIS THAT GD CODE SEEMS TO ALWAYS COME BACK. GOOD LUCK

Dec 11, 2013 | GMC Cars & Trucks

1 Answer

2005 Ford Five Hundred 3.0L Hesitational take off cleaned throttle plate and codes p2111 and p2104 still set. Looked in Mitchells and they're telling me to replace PCM. Any other solutions?


You have one bad COP Igniton Coil

The coil is not grounding out in the PCM

A signal is coming back to the TPS Sensor
& you loose it's signal

The PCM then doesn't know throttle position %
and sets a 2104 & 2111 & you think that you have
a bad Throttle Body Motor (TACM)

A dealer will charge you $1000.00 & fix nothing

Buy one coil for $35 to $50.00 & install yourself
You may have to walk the new coil around a few times
& drive the car 30 miles each time, until you get the bad coil

Repair shops are not good with Fords & Dealers are useless

You should have other Misfire Codes & lots of them

Give them to me

Jul 21, 2011 | 2006 Ford Five Hundred

1 Answer

05 lincoln ls was in accident, hit on drivers side, airbag deployed from drivers seat, seat belt light on, engine light on, wrench light comes on and goes into limp home mode. Was told needed to throttle...


I have a 2004 LS V8 & do all my own work

I can understand the battery failed as it was
more than 4 or 5 years old

The converters would have had to be damaged
in the accident if something got under the car
& damaged the exhaust pipes,no other reason

The Gas Pedal is called a Electronic Throttle
Control Module,I'm looking at my wiring diagrams
for a V6 &v8. I don't see that as an issue

The Throttle Body is almost always replaced at a dealer
& seldom an issue either. Reason --When you have a really
bad COP Ignition Coil it spikes your PCM & the signal
comes back on the TPS Sensor on the throttle body &
the pcm looses throttle plate % & starts to cut out
fuel injectors

Bottom line ,not many people like working on Ford Products
& the dealer will really cost you dearly & with negative results.

I have seen many codes related to coils & never more than
one bad one,while it could happen

It sounds as though 80% of your issues have nothing to do
with the accident.

We own one of the most complicated vehicles out there
It has Jaguar Technolgy as well

I don't know if any testing or diagnosing was done on your car
or if what was done invloved a body shop,then off the a dealer
or local repair shop,but I don't get a warm fuzzy fealing on anything
but the battery

As long as your wrench is light you have codes to at least look at

The ETC Failsafe on the right bottom side if dash is a BAD COIL
as I explained above. You will drive up to 22 miles in hot weather

The PCM you can see & feel under & behind the glove box
To remove it you have to remove the box on pass side of engine
compartment that covers the Cabin Filter as the 2 harness connectors
ar there down low

I doubt the PCM Failed

Go to a local shop that likes lincolns & just have them find
the one bad ignition coil.
them it will only go 6 mph in failsafe. Unusable for now

Jun 09, 2011 | 2005 Lincoln LS

1 Answer

2004 Lincoln Ls V8- Over the past 6 months the car has been experiencing a mis-fire, took it to a local auto parts store and had them plug it into their computer. It showed a mis-fire on cylinder 1 and 5...


You never go to a dealer

You will spend thousands and
nothing will be resolved

I have the same car 2004 V8

You never had a bad crank sensor,
a bad throttle actuator motor,throttle body,
or all the coil issues

What you have is 1 Bad COP Ignition Coil
The coil is so bad, that it spikes the PCM
(computer) instead of firing the secondary
and spark plug and grounding out

The spike comes back to the PCM which
in turn sends it to the TPS Sensor (throttle
position sensor) when looking at the TPS
for throttle position (where you applied the
gas pedal)

Now the TPS is a 2 position variable switch
or resistor. The PCM can not see a throttle
reference or plate angle,because the spike
canceled out it's nornal function

Now the PCM starts turning off fuel injectors
and you go into ETC (Electronic Throttle Control)
Failsafe Mode, and can only drive 6 mph

The fix is to buy 1 new coil for $59.00 plus tax
You walk that coil from one cylinder to the next
UNTIL you find the bad guy.
You need a lot of road testing, and a really hot
day works best, as the coils break down sooner

When the problem doesn't get fixed, you put
the original coil back in it's hole, and move the
new one to another cylinder

A lot of work,not really,you can switch a coil in 12 min.

Will a dealer do this. NO WAY

They will however sell you a new throttle body for $800
and several coils,not in the correct places, for another
$1500. Read other peoples posts on this site.

There are other ways to test the coilos,just not at home
and apparently not at a dealership
Never seen an in out mileage on a RO from a dealer in
all of 2010 for a drivablitiy issue.

Their stress test, won't show a problem in the service
bay,so why go there. If they give you the car back
without even driving it !!! It's not fixed!!

If you don't drive it long enough for it to act up,
you have an unhappy customer. A donut run won't
subsitute for a drivability run of 25 miles, as you
would use it.

I'm only getting started,you will have
other fun issues.

May want my phone # for the future

Feb 10, 2011 | 2004 Lincoln LS

1 Answer

Replacing throttle body and pinion seal


You first want to stay away from a dealer
I see you paying $1500 min and nothing being fixed,
and your in and out milage will be the same. Never driven
vehicle. That is what they do. Not much

You have an ETC,Electronic Throttle Control type throttle body.
It has a replaceable TPS Sensor and a Motor which is not.
It is a drive by wire vehicle. Three switches on your gas pedal,one two pole
TPS on the throttle body
I assume your MIL Lamp is lite on the dash and a P2104 thru
P2111 codes. They can be set by bad COP Ignition Coils
The coils on fords and lincolns have been bad for about 15 years now

A coil if really bad, spikes the PCM (computer) and that signal comes
back on the TPS. The PCM gets confused and puts you into failsafe or other
driveability issues. Thus the TACM 2105,2106 etc codes

So it is unlike that the TACM,throttle actuator control motor failed,but the dealer
will put one on anyway. The coil issues will not get resolved, because they will
say it passed an in shop load test. Of coarse it did. You need to drive it.
Remember they don't road test.

On your way home,guess what,the check lite come on again.

Let me know if you have codes


Any shop can do a pinion seal

You can get codes read at parts store
any PO301 thruPO308 is a bad coil The last # is the cylinder

1,2,3,4 Pass Side
5,6,7,8 Driver side
Front to back

Nov 30, 2010 | 2005 Ford Expedition

1 Answer

02 6 liter Denali sputtered and died while driving on highway. Started once or twice afterward but than died again. Has fuel pressure at fuel rail when pressing schrader valve with key on. Cranks, will...


possibly 4 things 1 bad ignition coil heating up then breaking down,2 clogged fuel filter,3 weak fuel pump,4 bad throttle position sensor or map sensor to check sensors simply put on hand held scanner and look for codes. replace fuel filter replace coil pack along with tune up plugs wires put fuel pressure gauge to see if fuel pump is working properly

Sep 18, 2010 | GMC Denali Cars & Trucks

2 Answers

How to repalce a knock sensor on my 2004 gmc yukon


Hi welcom to fixya. A defective knock sensor may cause engine detonation or reduced spark advance and fuel economy. When a knock sensor is removed and replaced, the sensor must be tightened to its specified torque. If the knock sensor is installed tighter than it should be, it may become too sensitive and provide an excessively high voltage signal, resulting in more spark ****** than required. When the knock sensor is installed looser than it should be, the knock sensor signal will be lower than normal, resulting in engine detonation.
To replace the knock sensor:
  • Disconnect the knock sensor wiring connector.
  • Then, unscrew the sensor.
  • Remove the knock sensor.
  • Reverse the procedures to install the part.
  • 15 ft.lbs.torque
  • hope this helps.Thank You for using fixya..iluv2fish.. Ray..

Jul 09, 2010 | 2004 GMC Yukon

2 Answers

Throttle position sensor light on. Car barely runs when hot.


On the introduction, it states, throttle position sensor light on.
Have that sensor changed first before anything else, if the car goes fine after that, the dealer was giving you the wrong diagnoses.

Aug 26, 2009 | 2003 Lincoln LS

1 Answer

2002 Ford Escape (V6) P0401 P0402 nightmare


Sounds like you have a vacuum leak, a problem with the wiring, or a bad PCM. Check wiring for pinched, chafed, pierced, or broken wires. Make sure vacuum supply is good, and not collapsing when the vehicle is running. Beyond that, a trip to the dealer may be in order.

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2004 lincoln aviator engine miss and rough idle


I HAVET HE SAME PROBLEM WITH HEAD # 7, THEY SAY I NEED A NEW ENGINE? $ 5000, DON'T KNOW WHAT TO DO?

Feb 18, 2009 | 2003 Lincoln Aviator

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