I was on the freeway and lost all acceleration

Tiny
ALEX19899
  • MEMBER
  • 2003 FORD EXPLORER
  • 4.6L
  • V8
  • 4WD
  • AUTOMATIC
  • 145,000 MILES
I had to go to third gear to move and that was only at 35 mph. Later that day I went to drive it and it drove fine.
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Sunday, September 1st, 2019 AT 4:07 PM

3 Replies

Tiny
KASEKENNY1
  • EXPERT
Hi,

This could be a number of different things but let's start with the basics first to see which path we may need to go down.

Let's check the transmission fluid. Unfortunately, this is not the easiest transmission to do that on. There is no dipstick so you have to remove the center plug from the drain plug on the pan and install a tool to drain and fill. I attached the procedure.

Also, we need to scan it for codes. If you don't have a scan tool then most parts stores can do this for you.

If the fluid is okay and there are no codes, and the vehicle is driving fine, then I would just leave it be until it starts to present a more consistent issue. I am not suggesting what happened is okay but I would hate for you to go make a repair if it never happens again. If you don't do a repair and it never happens again then you saved the time and money. If it does it again, then we will hopefully have more to go on.

Let me know what you find and we can go from there. Thanks
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Monday, September 2nd, 2019 AT 6:10 PM
Tiny
ALEX19899
  • MEMBER
I had a mechanic look at it but could not duplicate the issue but said the transmission fluid was burnt. Does that mean it needs a rebuild?
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Monday, September 2nd, 2019 AT 6:51 PM
Tiny
KASEKENNY1
  • EXPERT
Not necessarily. Burnt fluid is caused by heat. This could be due to normal wear and tear or by something malfunctioning causing excessive heat. If you have not serviced the fluid in a while, I would just go ahead and have that done and then see what happens.

At this point if you leave the fluid in that is burnt it will begin to slip more often which will require a rebuild or replacement. If you change it then as long as the damage is not already done then you will extend the life of the transmission.
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Monday, September 2nd, 2019 AT 7:17 PM

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