Water temp not working on scan gageII - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 02-23-2010, 04:34 PM Thread Starter
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Water temp not working on scan gageII

I have a scan gage II and the water temp is not working it shows -40 all the time. On my other cars it works. All other things show up like trans temp, map, speed, lod, etc. I was wondering if I had a bad coolant temp sensor or something? The dummy gage says just below half once its warmed up. heat works well warms up pretty fast. So would I get a check engine light if the coolant temp sensor was bad?

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post #2 of 7 Old 02-24-2010, 04:52 AM Thread Starter
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Any Ideas?
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post #3 of 7 Old 02-24-2010, 07:56 AM
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I am pretty sure the 7.3 does not have a coolant temp probe that the ECM reads. the 6.0 does. I monitor engine oil temp on my edge monitor since I dont get an option for coolant.

Just a basic 01 F350 CCLB SRW -Good from a far but far from good
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post #4 of 7 Old 02-24-2010, 07:58 AM Thread Starter
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ok something new to know about these things. I will have to get the code for engine oil temp on my scan gage

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post #5 of 7 Old 02-24-2010, 08:03 AM
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I think EOT is more useful anyway. I can have the coolant at 170 deg and the oil tem is just hardly over 135 to 140. I dont consider my truck as up to temp till I see 165 EOT.

Just a basic 01 F350 CCLB SRW -Good from a far but far from good
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post #6 of 7 Old 02-24-2010, 11:52 AM
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Mine says -40 all the time too. I assume the PCM must know the coolant temp but I have not seen a code for it.

The scangauge site has a whole section for 7.3 diesels and has codes for injector pressure, pulse width, engine oil temp, and more.

There is also a handy plug near the thermostat if you ever wanted to install a real water temp gauge. Many people use this port for their coolant filters.

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post #7 of 7 Old 02-25-2010, 05:22 PM
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I have the same gauge in my 2000 and it doesn't read water temp. Not sure what year yours is if you give them a call they are very helpfull and with email you all the xgauge codes for the 7.3L.

2000 F350 crew cab long bed 4x4 7.3L Diesel, 4inch procomp lift, 315/75/16 tires, 104,000 miles, 6637 air intake, zoodad mod, 4 inch MBRP turboback exhaust, AIH delete, Isspro EV2 Gauges EGT, boost, trany temp, Dp Tuner F6 hi idle, 80T, 80E, 120 Race, just installed WW
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