Yet another trans temp gauge question
I am looking into installing a temp gauge for my 4R100 (’04 E350, V-10). A search here shows that there are two recommended places to install the temp probe – either on the line from the trans to the cooler, or in something referred to as the “test port” on the trans case.
Auto Meter sells both a manifold to install the gauge in-line, as well as various sized NPT adaptors to install it with. Presumably, one of these works in the test port.
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1. Does anybody know what size the hard line is (Auto Meter sells both a 3/8” OD as well as a 5/16” OD adaptor?
2. Does anybody know what size the test port is?
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3. How do I locate the test port?</O
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Thanks in advance.
Last edited by wreckerboy; Jul 8, 2005 at 03:04 PM.


