Re: New Temperature Gauge reading high !!
1. To test gauge, voltage from ?I? to ?G? terminals
must be 10-16 VDC. No wire on ?S? terminal.
Gauge pointer should rest below 120?. Next,
connect the ?S? terminal to the ?G? terminal
(leave ?I? and ?G? terminals connected). The
gauge pointer should rest above 240?.
2. The resistance of the sender can be
measured to determine the sender?s correct
operation. Remove wire to gauge. Connect an
ohm me ter to terminal of sender and to engine
block. Ap prox i mate values are: 75?F (room
temperature) = 600 to 800 ohms; 212?F = 55
Water & Oil Temperature
Sender Identifi cation Guide
Use this chart for fi eld identifi cation of Telefl ex water
tem per a ture senders. (ID code stamped on wrench
hex of sender. See illustration at left of chart.)
TEMPERATURE
SENDER ID CODE
(DEPENDS ON TYPE)
1.75/2/25"
.30/.50"
(DEPENDS
ON TYPE)
10-32 THREAD
Although sender/gauge tolerances rarely run to
the max i mums (at the same time), the system can
possibly indicate up to 15?F difference from actual
temperature at 200?F. These specifi cations are
developed at a system voltage of 14 volts. The
sender is also susceptible to ?self heating? when
elec tri cal current passes through the sender. The
self heating causes the sender to become warmer
than the actual tem per a ture of the fl uid (the gauge is
com pen sat ed for this effect at 14 volts). If the system
voltage is varied to 13 or 15 volts the gauge may
read 5 to 6?F higher also.
In a few cases it is necessary to put a temperature
sender and a temperature switch (to operate a light
or buzzer) in the only engine opening. In this case a
?tee? is used. However, when the sender (or switch)
is moved away from the water fl ow, the water around
the sender bulb tends to run cooler. The gauge will
also show a cooler reading than the actual water
temperature inside the engine. Use of ?ex tend ers? or
?tees? is generally not recommended.
ID CODE NPT RESIST- # OF
ON PART THREAD RANGE ANCE GAUGES/
SENDER NO. SIZE (?F) RANGE SENDERS
WATER TEMPERATURE:
003 52320S003 1/2 120-240?F S-W MATCH 1
004 52320S004 1/4 120-240?F S-W MATCH 1
009 52320S009 3/8 120-240?F S-W MATCH 1
010 52320S010 1/8 120-240?F S-W MATCH 1
016 52320S016 1/4 120-240?F S-W MATCH 2
017 52320S017 1/2 120-240?F S-W MATCH 2
018 52320S018 3/8 120-240?F S-W MATCH 2
60 52320S010 1/8 120-240?F S-W MATCH 1
61 52320S004 1/4 120-240?F S-W MATCH 1
62 52320S009 3/8 120-240?F S-W MATCH 1
63 52320S003 1/2 120-240?F S-W MATCH 1
230 IA96035* 1/8 50-200?F S-W MATCH 1
15000 52320S004 1/4 120-240?F S-W MATCH 1
15002 52320S016 1/4 120-240?F S-W MATCH 2
15009 52320S017 1/2 120-240?F S-W MATCH 2
15010 52320S003 1/2 120-240?F S-W MATCH 1
15013 52320S009 3/8 120-240?F S-W MATCH 1
15014 52320S018 3/8 120-240?F S-W MATCH 2
96061 52320S010 1/8 120-240?F S-W MATCH 1
OIL TEMPERATURE:
002 52320S002 1/2 140-320?F S-W MATCH 1
006 52320S006 1/8 140-320?F S-W MATCH 1
007 52320S007 1/4 140-320?F S-W MATCH 1
008 52320S008 3/8 140-320?F S-W MATCH 1
96046 52320S006 1/8 140-320?F S-W MATCH 1
* Use only with old style 50-200?F gauges. (Do not use with C-H
or 120-240?F gauges.)
ohms. (These are single station values ? twin
station values would be 1/2 these num bers).
3. If sender is shorted (0 ohms) gauge will read
above 240?F.
4. If sender has infi nite resistance (Open) gauge
will read below 120?F.
5. If the gauge reads lower than expected, was
sealer used on the sender threads? (See
illustration.)
6. The accuracy of the system (gauge, sender,
voltage range) can vary as much as ?16? at
180?F.
7. Use of pipe extenders to plumb both a sender
and tem per a ture switch (for horn or warning
light) from one port is not rec om mend ed. The
amount of weight extended on the fi tting of a
vibrating engine could cause fatigue-related
breakage. Also, the sender is removed
Should i just replace the temp sender on my engine to a Teleflex one and get this problem solved ?
