• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

94 5.0 temperature help?? gauge is always too hot help help help????

  • Thread starter Thread starter ajay5605
  • Start date Start date Mar 19, 2010
A

ajay5605

New Member
Mar 19, 2010
9
0
0
Mar 19, 2010
#1
  • Mar 19, 2010
  • #1
any help would be GREATLY appreciated

94 GT conv is running really hot according to the gauge i drive it for a few miles then the guage goes up to the "L" in normal on the gauge sometimes even past that into the red. the car now has a new thermostat (180 degrees used to have a 195) and now a new water pump and new temp sensors both the gauge sensor on the intake to the right of the dizzy and the one on the coolant line above the thermostat housing

when i drive the car it gets too hot according to the gauge but when i pull the wire off of the sensor under the hood the gauge only drops to the "N" in normal not all the way to the "C" on the right of the gauge even when the gauge says hot (which sometimes it will creep all the way up to the red line on the gauge and maybe even a lil bit past) you can open the hood and touch the upper intake and both the top and bottom radiator hoses. when you open the hood it is def not overheating i mean its warm but def not way too hot



i cannot figure this thing out. i have no exhaust in the overflow tank and now white smoke and just did an oil change and the oil looks good flushed the radiator and all looked ok so i dont think its a head gasket the only thing that isnt new is the heater core hoses and the radator

any suggestions ????????????

PLEASE HELP
 
A

ajay5605

New Member
Mar 19, 2010
9
0
0
Mar 19, 2010
#2
  • Mar 19, 2010
  • #2
BTW i have bled the system (let it idle with the cap off and squeeze the upper hose and the fan appears to be acting fine comes on low when it is just a lil hott and on when it is hott with the air on
 
A

ajay5605

New Member
Mar 19, 2010
9
0
0
Mar 19, 2010
#3
  • Mar 19, 2010
  • #3
P.S.S lol

can someone with another 94-95 GT tell me what their temp sensor OHMS is if i unplug the one connector (to the right of the Dizzy) and plug a volt meter from the top of the connector to the ground side on the battery i start with 370 OHMs then as it warms up it goes down to 15 OHMs even though the haynes book says 74 to 9.5 OHMs

what does your sensor read???
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Mar 19, 2010
#4
  • Mar 19, 2010
  • #4
You're better off getting a real gauge or means of observing temps because the stock gauge is so flakey anyhow.

You could check voltage at your ECT to see what temp the puter is seeing. The ECT should show about 0.80V at ~180*F, and about 3.0V at 70*F.
 
A

ajay5605

New Member
Mar 19, 2010
9
0
0
Mar 19, 2010
#5
  • Mar 19, 2010
  • #5
do you mean the sensor on the passenger side above the thermostat??

or the one to the right of the Dizzy???

which one would have those readings?
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Mar 19, 2010
#6
  • Mar 19, 2010
  • #6
The ECT is a sensor on the passenger side.

The gauge sender is on the driver's side (one wire).

You'd want to test voltage at the ECT.
 
A

ajay5605

New Member
Mar 19, 2010
9
0
0
Mar 19, 2010
#7
  • Mar 19, 2010
  • #7
im at .545 volts when the fan that is already on low switches to high

any suggestions
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Mar 19, 2010
#8
  • Mar 19, 2010
  • #8
That's right in the neighborhood (it's actually a little cool, at just a hair over 200*F).

High should not kick on till in the 220's.

You could try a new sender for your gauge if you wanna keep using that thing, or go with an aftermarket gauge.
 
A

ajay5605

New Member
Mar 19, 2010
9
0
0
Mar 19, 2010
#9
  • Mar 19, 2010
  • #9
i already changed the sender for the gauge

how do you know what the temp is?? do you have a chart or something could you email it to me??


tomorrow i will pick up an aftermarket gauge and hook it up
and maybe pull the cluster to see if i can find anything wrong with the temp gauge

if you could get me the chart or let me know how you know the actual engine temp that would be great
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Mar 19, 2010
#10
  • Mar 19, 2010
  • #10
You might wanna remove your email addy since this is a public forum. It's best to just convey them through PM's IMHO.

Ford Fuel Injection Engine Coolant Temperature Sensor (ECT)
 
A

ajay5605

New Member
Mar 19, 2010
9
0
0
Mar 19, 2010
#11
  • Mar 19, 2010
  • #11
wow thanks for all your help i really appreciate it

i still cant figure out why it is running hot tough i mean it shoudnt be over 200 just idling right???
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Mar 20, 2010
#12
  • Mar 20, 2010
  • #12
If it really is running that hot, it's not abnormal. Remember while simply idling (stationary) the limiting factor is the fan coming on (because there is no ambient air flow over the coil [radiator]).

The low speed fan comes on at ~208*F so right in that neighborhood is where the car will settle. Once you start moving (or modify the fan settings), then it can come down if the thermostat will allow it (i.e. a 180* is used instead of a 195*).
 
A

ajay5605

New Member
Mar 19, 2010
9
0
0
Mar 20, 2010
#13
  • Mar 20, 2010
  • #13
thanks a ton for all your help HISSIN50

it was that stupid stock gauge

i went to autozone and got a $17 gauge and took the car out and it never broke 210 got close then came right back down

cruising at 45 the car was just under 190

i cant believe I did all that work (Waterpump, thermostat, and flushing system twice) to find it was the stupid gauge

thanks
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Mar 20, 2010
#14
  • Mar 20, 2010
  • #14
Glad to hear it was nothing.
Your temps sound just about right.

You'll want to get yourself some real gauges to monitor other systems as well.

If you ever want to install manual fan switches, here's some info on that.

94-95 Mustangs Cooling Fans - Mustang-Tech
 
You must log in or register to reply here.

Similar threads

L
Car has been overheating. Not sure what is causing it. Any help would be appreciated.
  • Luckysgirl
  • Jun 2, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
104
1996 - 2004 SN95 Mustang -General/Talk- Jun 2, 2026
Luckysgirl
L
G
1991 GT 5.0 running hot
  • gvanginkel403
  • Jul 1, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
5
Views
130
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jul 2, 2026
General karthief
T
Help with a 95 5L crank no start
  • TheBubbaJoe
  • Nov 4, 2025
  • 1994 - 1995 Specific Tech
Replies
3
Views
444
1994 - 1995 Specific Tech Nov 5, 2025
AeroCoupe
P
Weird Voltage & Oil Pressure Gauges
  • PNN
  • May 22, 2026
  • SN95 V6 Mustang Tech
Replies
0
Views
51
SN95 V6 Mustang Tech May 22, 2026
PNN
P
R
94’ SN95 - Intermittent lope & bogging at moderate rpm
  • Red5.0ho
  • Nov 2, 2025
  • 1994 - 1995 Specific Tech
Replies
5
Views
452
1994 - 1995 Specific Tech Nov 3, 2025
General karthief
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?