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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Temp sensor- '91 4.9l

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Old Sep 29, 2008 | 08:47 PM
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Temp sensor- '91 4.9l

Ok, the temp gage on my '91 300 doesn't work. I eventually want to put a factory tach dash in it, but I wanted to test the sender to see if that was bad- I searched the forums for an hour- and looked at my truck for an hour. where the hell is the temp sensor? I found the one with 2 wires, but I'm looking for the one with one wire that runs the gage.
 
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Old Sep 29, 2008 | 09:16 PM
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down on the side of the motor under the exhaust manifolds.
 
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Old Sep 29, 2008 | 10:03 PM
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Thanks, i'll check it out tomorrow.
 
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Old Sep 30, 2008 | 06:24 AM
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After replaceing the single wire temp sender, go locate a 87'-91' instrament display that includes the tach (& the tripometer if you want),at junk yard (E,F-series,Lariat or bronco) Buy it,unplug your, plug in the one w/ tach and the tach will begin working. w/o any wire adds or mods. Important note: Oil sender units are matched to gage so to increase the chance that the oil gage matches your sender from 33% to 100%, also take the sender. I switched out my tachless I.P. 87' F-150 w/ I.P. w/tach & tripometer from 91' lariat $35. total and 30 day warrenty exchange or refund is pretty standard.
 
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Old Oct 3, 2008 | 08:08 AM
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I got to get me a tach dash one of these days. My truck has an aftermarket oil pressure gage, so if the factory one doesn't read right it's no big deal.
 
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