HELP!! TOW/HAUL LIGHT FLASHING
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Freshman User
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HELP!! TOW/HAUL LIGHT FLASHING
i just replaced an injector last night and after i got down i took it for a test drive and my tranny felt like it slipped then jumped back into gear and did it again. Then i seen my tow/haul light flashing so i stopped and shut off the truck and plugged my programmer in to do a dtc test and it popped some codes so i cleared them. i couldnt go fast at all, it would be at a high rpm. I googled what was happening and i read that the trans temp sensor could be bad so i went to my local store and got it and dropped the pan swapped the sensor out and filter and filled my tranny up with new mercon sp. i dont know what is going on???? it popped some speed sensor codes but they went away and i cant figure it ou. someone help please !!!
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Freshman User
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I did do that and it did reset but it just doesn't shift right. I feel like it's a sensor doing it. Or why else would the light be flashing
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
The light is flashing because the gear ratio is wrong in the transmission. The other codes that were set would be a BIG help in determining what's wrong. I recommend you keep driving until the codes come back. Without the codes all I can tell you is that something is wrong.
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Freshman User
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The light is flashing because the gear ratio is wrong in the transmission. The other codes that were set would be a BIG help in determining what's wrong. I recommend you keep driving until the codes come back. Without the codes all I can tell you is that something is wrong.
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Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
You need to electrically check both the intermediate speed sensor (located on top of the trans, about halfway between the front and back) and the wiring to the sensor.
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Okay so I did that and it ran good for a couple of days so I decided to hook my edge ht tuner back up. I only run it on economy mode for better mpg. That's when it started doing it again. What could that be?