2003 F250 220-235 Trans temp - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 07-31-2013, 02:22 PM Thread Starter
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2003 F250 220-235 Trans temp

Just put in gauges and drive from ca to nv 70-75 mph. 98 outside. 7.3L 10" lift 37" tires 500 lbs in bed. Beans chip on Econ or street setting. 38R turbo. Is that to high or am I ok?

03 SUPERDUTY 7.3L AUTO, 10" LIFT 37" TOYO MT'S 07 GRILL, HEADLIGHTS, CFM INTAKE, CAI, 4.30 GEARS
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post #2 of 7 Old 07-31-2013, 02:52 PM
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230 is terrible!! But I think you have a sensor issue. You wouldn't be going anywhere if your trans was that hot.
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post #3 of 7 Old 07-31-2013, 02:53 PM
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Those temps are where you want to pull over, let everything cool down and put new fluid in. Before you go too far, check your connections really good and make sure the sensor is clean so it gets a good ground. After that, check that the cooler is actually getting hot. If it's cold, check that the bypass on the side of the trans is hot. If the cooler is cool and the bypass is hot, replace the bypass.

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post #4 of 7 Old 07-31-2013, 05:51 PM Thread Starter
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So I'm not slipping. Checked fluid it's fine. Factory gauge is reading normal. Is that gauge accurate?

03 SUPERDUTY 7.3L AUTO, 10" LIFT 37" TOYO MT'S 07 GRILL, HEADLIGHTS, CFM INTAKE, CAI, 4.30 GEARS
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post #5 of 7 Old 07-31-2013, 06:19 PM
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Slipping isn't always that noticeable, you would have to scan the truck and look at the input and output speed sensors. The factory gauge is basically a idiot light with just a few readings, it only moves when it's time for a new transmission. Your going to need to eliminate the gauge or the transmission as a issue.

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post #6 of 7 Old 08-05-2013, 04:10 PM Thread Starter
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So I made it home from Idaho. One of the guys on the trip was talking to me about what has been done to my truck. I have 4.33 gears from the stock 3.73 ratio. He said that the 4.33 gears were slowing down the rear pump in my auto trans, and the front pump was pushing more than it could handle causing the fluid to not circulate properly and heat up. Is there any truth to that?

At 70-75 I would hit 230-240 trans temps. slow down to 55-65 and it would drop to 210. Any help would be much appreciated.

03 SUPERDUTY 7.3L AUTO, 10" LIFT 37" TOYO MT'S 07 GRILL, HEADLIGHTS, CFM INTAKE, CAI, 4.30 GEARS
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post #7 of 7 Old 08-05-2013, 07:16 PM
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If its that hot your gonna need to change it. You need to get a 6.0 cooler. The OEM cooler is notorious for what typically causes the 4R100's to fail.

Fluid that is. Not the whole trans. Lol

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