5.4 V8 coolant temperature sensor question.... - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Fordforums Community > USENET NewsGroups > alt.trucks.ford
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 06-14-2005, 07:01   #1 (permalink)
asadi
Guest
 
Posts: n/a
5.4 V8 coolant temperature sensor question....

Asking those more knowledgeable than I, I pose the following...

The 'Auto Zone' diagnostic trouble code was for the coolant temperature
sensor. Although the check engine light has not reappeared, I have notice a
slight decrease in mileage, the tailpipe looks light it's running a little
rich and I have a hesitation, rough idle - acts like it's getting ready to
stall when I slow for a stop...AFTER the vehicle is warm.

The sending unit is up on top, very accessible but the sensor is down in the
valley where I have to remove the air filter and alternator just to reach
it. Have I found the correct sensor in the proper location?

1) If you know what kind of wrench or socket that makes the bends to remove
this...let me know the model number so I can buy one.

2) The new sensor supplied by the dealer will not fit the present connector.
Is it uncommon to have to replace the connector?

...thanks - john 200 econoline (who can answer questions on wood
re-finishing, plaster repair and fly fishing but, unfortunately, not
mechanicing...)




  Reply With Quote
Sponsored Links
Advertisement
 
Old 06-15-2005, 16:01   #2 (permalink)
ross via CarKB.com
Guest
 
Posts: n/a
Re: 5.4 V8 coolant temperature sensor question....

asadi wrote:
>Asking those more knowledgeable than I, I pose the following...
>
>The 'Auto Zone' diagnostic trouble code was for the coolant temperature
>sensor. Although the check engine light has not reappeared, I have notice a
>slight decrease in mileage, the tailpipe looks light it's running a little
>rich and I have a hesitation, rough idle - acts like it's getting ready to
>stall when I slow for a stop...AFTER the vehicle is warm.
>
>The sending unit is up on top, very accessible but the sensor is down in the
>valley where I have to remove the air filter and alternator just to reach
>it. Have I found the correct sensor in the proper location?
>
>1) If you know what kind of wrench or socket that makes the bends to remove
>this...let me know the model number so I can buy one.
>
>2) The new sensor supplied by the dealer will not fit the present connector.
>Is it uncommon to have to replace the connector?
>

I don't know your engine specifically but if your connector is not fitting,
It is very likely you have the wrong part. My 99 explorer has a coolant temp
sender for the computer and one for the temp guage. I believe there is
another for the A/C.

You should not have to change wiring to put in a new sensor. Double check
with the dealer that you have the right part and have them print out a copy
of the parts diagram thay are looking at and show you where it is on the
engine - you might be looking at the wrong one.


--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx...truck/200506/1
  Reply With Quote
Old 06-15-2005, 17:01   #3 (permalink)
asadi
Guest
 
Posts: n/a
Re: 5.4 V8 coolant temperature sensor question....

Ah, three sensors....the plot thickens...
thanks ross.....john

"ross via CarKB.com" <forum@CarKB.com> wrote in message
news:4FE66DF12DD90@CarKB.com...
> asadi wrote:
> >Asking those more knowledgeable than I, I pose the following...
> >
> >The 'Auto Zone' diagnostic trouble code was for the coolant temperature
> >sensor. Although the check engine light has not reappeared, I have notice

a
> >slight decrease in mileage, the tailpipe looks light it's running a

little
> >rich and I have a hesitation, rough idle - acts like it's getting ready

to
> >stall when I slow for a stop...AFTER the vehicle is warm.
> >
> >The sending unit is up on top, very accessible but the sensor is down in

the
> >valley where I have to remove the air filter and alternator just to reach
> >it. Have I found the correct sensor in the proper location?
> >
> >1) If you know what kind of wrench or socket that makes the bends to

remove
> >this...let me know the model number so I can buy one.
> >
> >2) The new sensor supplied by the dealer will not fit the present

connector.
> >Is it uncommon to have to replace the connector?
> >

> I don't know your engine specifically but if your connector is not

fitting,
> It is very likely you have the wrong part. My 99 explorer has a coolant

temp
> sender for the computer and one for the temp guage. I believe there is
> another for the A/C.
>
> You should not have to change wiring to put in a new sensor. Double check
> with the dealer that you have the right part and have them print out a

copy
> of the parts diagram thay are looking at and show you where it is on the
> engine - you might be looking at the wrong one.
>
>
> --
> Message posted via CarKB.com
> http://www.carkb.com/Uwe/Forums.aspx...truck/200506/1



  Reply With Quote
Old 06-17-2005, 21:01   #4 (permalink)
ross via CarKB.com
Guest
 
Posts: n/a
Re: 5.4 V8 coolant temperature sensor question....

asadi wrote:
>Ah, three sensors....the plot thickens...
>thanks ross.....john
>
>> >Asking those more knowledgeable than I, I pose the following...
>> >

>[quoted text clipped - 23 lines]
>> of the parts diagram thay are looking at and show you where it is on the
>> engine - you might be looking at the wrong one.



My mother used to say the thought plickens. I thibk both are correct.


Good luck!


--
Message posted via http://www.carkb.com
  Reply With Quote
Old 06-17-2005, 21:01   #5 (permalink)
patcheswho@cfl.rr.com via CarKB.com
Guest
 
Posts: n/a
Re: 5.4 V8 coolant temperature sensor question....

couple of questions for you.
first: was the engine up to temp when you had the code pulled? a cold
engine will generate the same code and there is nothing wrong the code can go
away when the engine reaches normal operating temp.
second: common on the ford 5.4L. they have a Baro sensor or barometric
sensor that reads air density. the sensor is part of the mass air sensor
located on the air filter box. you wont get a code for this and here is why.
this sensor tells the computer the density of the air for the proper fuel
mixture. if you live at sea level the air is more dense the up in the
mountains. when the sensor goes bad it usually starts to read as though you
were up in the mountains. common problem for people who use k&n filters
because the oil from the filters contaminates the sensor. the only way to
test it is to get a scanner that can read the baro like a snap-on scanner it
should rear 159-160 Hz. if you are at sea level. since the car doesn't
really know if your are in collorodo or Florida it has to rely on this sensor
so if you are in Fl. but your car thinks you are up in the mountains you will
use a lot more fuel and the engine will run a bit richer.

Back to your temp sensor. follow the upper rad hose to the intake the sensor
will be in the first passage of the intake probably on the passenger side of
the engine.
hope this helps.

asadi wrote:
>Asking those more knowledgeable than I, I pose the following...
>
>The 'Auto Zone' diagnostic trouble code was for the coolant temperature
>sensor. Although the check engine light has not reappeared, I have notice a
>slight decrease in mileage, the tailpipe looks light it's running a little
>rich and I have a hesitation, rough idle - acts like it's getting ready to
>stall when I slow for a stop...AFTER the vehicle is warm.
>
>The sending unit is up on top, very accessible but the sensor is down in the
>valley where I have to remove the air filter and alternator just to reach
>it. Have I found the correct sensor in the proper location?
>
>1) If you know what kind of wrench or socket that makes the bends to remove
>this...let me know the model number so I can buy one.
>
>2) The new sensor supplied by the dealer will not fit the present connector.
>Is it uncommon to have to replace the connector?
>
>..thanks - john 200 econoline (who can answer questions on wood
>re-finishing, plaster repair and fly fishing but, unfortunately, not
>mechanicing...)



--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx...truck/200506/1
  Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Fordforums Community > USENET NewsGroups > alt.trucks.ford



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are Off
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 09:36.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.