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coolanttempsender.jpg TSB 95-13-02 Erratic [url=https://www.amazon.com/dp/B000O0PN0I]Temperature Sender F1SZ10884A[/url],[url=https://www.amazon.com/dp/B000C5HSP8]SW2328[/url], or DOWY10884A

Factory temperature senders with a date code before 2774 are known to be defective. The code is stamped into the side of the hex. The format is the Julian date &  the last digit of the year, so that's the 277th day of 1994. So 0085 is good; 1934 is bad; 3034 is good; 2765 is good; 3582 is bad.

If you're having trouble with your temp gauge, try to read the date off the sender before any other diagnosis. A new sender from NAPA is under $10.

LOCATION:
The smallblock V8 location is the top L front of the intake manifold beside the distributor.
The I6 location is the RHR side of the head, below the exhaust manifold, facing the HVAC blower housing.  It's barely visible looking up between the frame & RHF wheelwell behind the tire.  It's difficult to reach above the starter.

TESTING:
Pull the R/Wh wire's terminal off the threaded stud and ground it to the engine block.  Turn the key to RUN.  The gauge should peg hot within a second or 2.  If it moves slowly or doesn't go to peg, the circuit has high resistance between the terminal & the gauge (possibly at the cluster connector).  If it doesn't move, either the R/Wh circuit is open, or the gauge is dead.  If it pegs hot even when disconnected, the wire is pinched to ground somewhere.

The sender should test at 74 Ohms cold; 9.7 Ohms hot.

For other TSBs, check [url=www.bbbind.com/tsb-wiring-diagrams-database/]here[/url].

See also:
[url=https://www.amazon.com/dp/B00CVHIJDK/][img]http://ecx.images-amazon.com/images/I/510Uzei5jZL._AA160_.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/71642][img]https://www.supermotors.net/getfile/71642/thumbnail/check-valve.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/285241][img]https://www.supermotors.net/getfile/285241/thumbnail/fanclutchtest.jpg[/img][/url]

[url=http://www.fourdoorbronco.com/board/showthread.php?t=5230]A Complete Explanation of the Engine Cooling System[/url]

For ALL OTHER GAUGES, see these:

[url=https://www.supermotors.net/registry/2742/34307-4][img]https://www.supermotors.net/getfile/434941/thumbnail/lfl_on.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/76023][img]https://www.supermotors.net/getfile/76023/thumbnail/cluster-front.jpg[/img][/url]

Before buying cheap aftermarket parts, check for [url=http://owner.ford.com/servlet/ContentServer?pagename=Owner/Page/ServiceCouponsPage]coupons & service offers from Ford[/url].
coolanttempsender.jpg | Hits: 10897 | Posted on: 7/16/09 | View original size (13.55 KB)

TSB 95-13-02 Erratic Temperature Sender F1SZ10884A,SW2328, or DOWY10884A

Factory temperature senders with a date code before 2774 are known to be defective. The code is stamped into the side of the hex. The format is the Julian date & the last digit of the year, so that's the 277th day of 1994. So 0085 is good; 1934 is bad; 3034 is good; 2765 is good; 3582 is bad.

If you're having trouble with your temp gauge, try to read the date off the sender before any other diagnosis. A new sender from NAPA is under $10.

LOCATION:
The smallblock V8 location is the top L front of the intake manifold beside the distributor.
The I6 location is the RHR side of the head, below the exhaust manifold, facing the HVAC blower housing. It's barely visible looking up between the frame & RHF wheelwell behind the tire. It's difficult to reach above the starter.

TESTING:
Pull the R/Wh wire's terminal off the threaded stud and ground it to the engine block. Turn the key to RUN. The gauge should peg hot within a second or 2. If it moves slowly or doesn't go to peg, the circuit has high resistance between the terminal & the gauge (possibly at the cluster connector). If it doesn't move, either the R/Wh circuit is open, or the gauge is dead. If it pegs hot even when disconnected, the wire is pinched to ground somewhere.

The sender should test at 74 Ohms cold; 9.7 Ohms hot.

For other TSBs, check here.

See also:
. .

A Complete Explanation of the Engine Cooling System

For ALL OTHER GAUGES, see these:

.

Before buying cheap aftermarket parts, check for coupons & service offers from Ford.
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