Transmission problems, 1997 Mustang V6 - Ford Mustang Forum
 
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post #1 of 11 (permalink) Old 05-08-2007 Thread Starter
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Transmission problems, 1997 Mustang V6

Hi i'm new to the forum and I have a 97 v6 mustang. Here is the problem i'm having with my transmission (Auto). My car is stock I put it into drive and accelerate and it would not change to the next gear the rpm went up to 3500. I pulled over, put the car in to Neutral and then back to drive and the gears changed normally. It happened again the next morning and again I put it in to neutral and then to drive and all is well. Can anyone help me out and tell me what the problem may be and how to resolve it. Also, the problem has only happened just those 2 times, the car has 152,000 KM. Thanks.
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post #2 of 11 (permalink) Old 05-08-2007
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There are several things it could be, but lets start with the least expensive. When was the last time the ATF was flushed & filled? If you don't know or it has been several years, then that is not good. Bad ATF can cause tranny problems.

There are other people that know more about trannys than me, so read their advise as well.

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post #3 of 11 (permalink) Old 05-08-2007
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Originally Posted by 97_Stang View Post
Hi i'm new to the forum and I have a 97 v6 mustang. Here is the problem i'm having with my transmission (Auto). My car is stock I put it into drive and accelerate and it would not change to the next gear the rpm went up to 3500. I pulled over, put the car in to Neutral and then back to drive and the gears changed normally. It happened again the next morning and again I put it in to neutral and then to drive and all is well. Can anyone help me out and tell me what the problem may be and how to resolve it. Also, the problem has only happened just those 2 times, the car has 152,000 KM. Thanks.
you're definitely low on fluid, hopefully you haven't burned it out yet.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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post #4 of 11 (permalink) Old 05-08-2007
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I agree the first thing to do is flush the tranny

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post #5 of 11 (permalink) Old 05-08-2007
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Quote:
Originally Posted by 97_Stang View Post
Hi i'm new to the forum and I have a 97 v6 mustang. Here is the problem i'm having with my transmission (Auto). My car is stock I put it into drive and accelerate and it would not change to the next gear the rpm went up to 3500. I pulled over, put the car in to Neutral and then back to drive and the gears changed normally. It happened again the next morning and again I put it in to neutral and then to drive and all is well. Can anyone help me out and tell me what the problem may be and how to resolve it. Also, the problem has only happened just those 2 times, the car has 152,000 KM. Thanks.
the car just free revved and never shifted into gear? or you never got the chance to let it. you may have a sticking valve in the valve body or a broken 1-2 accumulator spring torn accumulator piston seal, or a failed snapring on the intermediate clutch. either way you will have to drop the valve body or the whole thing. which you will have done pretty much a flush after you get it all put back together. make sure your fluid is not black. it should be clean bright red, or a little dark. black and burned is not good and its time for an over haul if thats the case.

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post #6 of 11 (permalink) Old 05-09-2007
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Originally Posted by lxarlo View Post
the car just free revved and never shifted into gear? or you never got the chance to let it. you may have a sticking valve in the valve body or a broken 1-2 accumulator spring torn accumulator piston seal, or a failed snapring on the intermediate clutch. either way you will have to drop the valve body or the whole thing. which you will have done pretty much a flush after you get it all put back together. make sure your fluid is not black. it should be clean bright red, or a little dark. black and burned is not good and its time for an over haul if thats the case.
Speaking of the tranny...About how often should we be flushing the tranny fluid? I have an auto too. Was just curious...

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post #7 of 11 (permalink) Old 05-09-2007
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Speaking of the tranny...About how often should we be flushing the tranny fluid? I have an auto too. Was just curious...

Every 40,000 miles.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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post #8 of 11 (permalink) Old 05-09-2007
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Isn't the '95 tranny every 30,000 miles or 3yrs?

or is it 40,000 for old & new...

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post #9 of 11 (permalink) Old 05-09-2007
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Isn't the '95 tranny every 30,000 miles or 3yrs?

or is it 40,000 for old & new...

Could be the synthetics. They use semi-synth now . .. at least at the dealerships here, that's the recommendation.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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Every 40,000 miles.
yea about every 30-40k miles. the trans service is performed in the 30,60,90k services almost everywhere. 05+ mustangs the recommended transmission service interval is 150k miles. sooner in severe conditons

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Transmission - 4r70w - erratic or prolonged 1-2 shift

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