99 7.3 new owner questions - Ford Powerstroke Diesel Forum
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Old 07-15-2013, 05:19 AM
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99 7.3 new owner questions

hi everyone, just picked up a 99 7.3 XL, short bed ext cab. I love it so far, although it has 178k on it, so i have some concerns, today i was monitoring my gauges, it has a aftermarket egt, trans temp, and boost gauge.. these are things i noticed after 30 minutes of driving in 80 degree weather, at a daily pace.

EGT: 600
Trans temp: 210
Gas guage went to half tank then when i parked it went to actual almost empty reading

Im mainly concerned about the tranny, that seemed a little high for not towing anything?? I know its possible the gauge could be off..

If anyone can provide me with tips, things to check, or general maintenance to perform before going for power, please chime in. I want to make sure shes healthy before i up the power. Thanks everyone
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Old 07-15-2013, 05:35 AM
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7.3 Tech Files - Ford Powerstroke Diesel Forum
as for the trans look up a 6.0 cooler...others will chime in with other ideas tht might be cheaper but (just my ) do it once and do it good with a 6.0 trans cooler.
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Old 07-15-2013, 09:04 AM
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thanks for the link! im gonna do some reading.

a bit more info, i parked my truck at 8:30 this morning with the gauge @ 210
just took it to get lunch and right from the start when i turned it on the gauge read 150ish.. im assuming my gauge is broken? if the trans was cool by then, and not even a minute of run time was at 150?
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Old 07-16-2013, 04:41 AM
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What type of gauges are they? I only ask becasue certain brnads when they fail (or start to fail) demonstrate different failures. Your trans temp does not seem to be acting up. If you get to 210* it's quite possible that the trans will still be warm enough to read 150* at lunch. One way to test it is to bring the gauge and sender inside the house, hook it up to 12V power and connect the sender (it may need a seperate ground if it's a 1 wire sender) and insert the tip into a pot on the stove. Have another ele. cooking thermometer in the water also. Turn the heat up and compare them. A lot of work I know, but if you're concerned you can do it.
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Old 07-16-2013, 04:48 AM
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@dieselmanor, thanks for the reply i will definitely try that, i dont know if the sender will come out without a fight. Is there a warning light that will come on the dash after a certain trans temp?

admin: sorry about the multiple threads
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Old 07-16-2013, 05:41 AM
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no, and yes about the light... and agree with testing.
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Old 07-16-2013, 07:30 AM
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On the light, yes, but by the time it comes on, your temps will be so hot that the damage is done.
The sender shouldn't be too hard to remove. Most of the time they are brass, and brass doesn't rust up.
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