2003 won't accelerate after sudden braking | Ford Thunderbird forum club group 1955-2005 models

  • We're glad you found us via a search engine! Right now, you can join our club absolutely free and unlock member only features like the site search! This notice only appears once! It only takes 30 seconds to register, and we would love to have you as part of the World's largest Thunderbird Forum/Club! Click here to continue

2003 won't accelerate after sudden braking

  • Thread starter Thread starter jbird
  • Start date Start date
jbird

jbird

Click here to upgrade
Reaction score
0
Thunderbird Year
2003
After harsh/sudden braking '03 thunderbird won't "go" or rengage.
I reproduced this several times by:
1-harsh braking and stopping
2- harsh braking and then resuming my trajectory or turning.
In each scenario, I put my foot back on the accelerator, RPMs go up but the car won't go.
to resume my travel, I've tried:
1- Continuing to push gas, feathering it so I don't jolt, the car may then jump and then move forward.
2- shifting to P and then back to D5 or D4
3-shifting to manual and 1st or 2nd
4- shifting to P and then turning off engine, restarting engine
All of these attempts work, but it requires a small amount of time to pass... 1minute in most cases.
Facts: I've determined this has been an issue since I got it in May 2024
Has a new remanu tranny from June 2024
Thanks!!

This page contains affiliate links for which I may be compensated. As an eBay Partner, and Amazon Associate I may be compensated if you make a purchase at no cost to you.

 
Last edited by a moderator:
jbird said:
Here's your Monday puzzler. Thanks for reading.
After harsh/sudden braking '03 thunderbird won't "go" or rengage.
I reproduced this several times by:
1-harsh braking and stopping
2- harsh braking and then resuming my trajectory or turning.
In each scenario, I put my foot back on the accelerator, RPMs go up but the car won't go.
to resume my travel, I've tried:
1- Continuing to push gas, feathering it so I don't jolt, the car may then jump and then move forward.
2- shifting to P and then back to D5 or D4
3-shifting to manual and 1st or 2nd
4- shifting to P and then turning off engine, restarting engine
All of these attempts work, but it requires a small amount of time to pass... 1minute in most cases.
Facts: I've determined this has been an issue since I got it in May 2024
Has a new remanu tranny from June 2024
Thanks!!
Click to expand...
Has anyone checked the automatic transmission fluid level? A low fluid level could be the cause.

doug7740
1955 Thunderbird Blue
 
I have the same issue, although mine re-engages a few seconds after I remove my foot from the brake. Short enough for my brain not to realize that this is the reason I am not accelerating and it slams into gear before I can remove my foot from the accelerator.

My transmission also has a slight buzzing noise, which didn't change after a fluid flush. I have believe could be fluid leaking internally around the shift pistons (which is a common issue with the transmissions, at least in the 2002, and good rebuild kits have the fix), but I haven't brought it to a transmission shop yet. Wasn't sure if it was related, but seeing as you didn't mention a buzzing noise, makes me think they aren't related.
 
You must log in or register to reply here.
Back
Top