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1995 Firebird auto trans

Tiny
FLAMENBIRD87
  • MEMBER
  • 1995 PONTIAC FIREBIRD
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I have a 1995 firebird V6 with auto trans and 2nd gear start. When I first start car and put it in gear D it starts out in first, when it it shifst to second after hitting 35 it shifst a little hard and the check eng light comes on. Then it shifst fine through the other gears. When I come to a stop and then start again it takes off in second with out the 2nd gear button pushed and goes through the gears again. Now if I pull over and shut off car for aprox 5 min. Then start it up and go again it starts off in first again. Untill I stop and then go its back in second. Any one have idea? My trans fluid is nice and red and right at full. Could this be electrical and is there a way to disconnect 2nd gear start?
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Monday, April 11th, 2011 AT 9:28 PM

24 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
It's starting out in second because there is problem in the car somewhere. Have you had the battery and alternator tested?If not do that also what are the exact code numbers you have?That would be a good starting point let me know what you find.
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Monday, April 11th, 2011 AT 10:32 PM
Tiny
FLAMENBIRD87
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  • 45 POSTS
I only have an obd 2 tester for 96 and up but I do have a new battery and good alt. Is there a way to disc the 2 gear start?
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Saturday, April 16th, 2011 AT 4:08 AM
Tiny
SATURNTECH9
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Do you have a 12 pin or 16 pin diagnostic connector?
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Saturday, April 16th, 2011 AT 5:31 AM
Tiny
FLAMENBIRD87
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  • 45 POSTS
Mine is a 16 pin
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Saturday, April 16th, 2011 AT 8:11 PM
Tiny
FLAMENBIRD87
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  • 45 POSTS
On car
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Saturday, April 16th, 2011 AT 8:21 PM
Tiny
SATURNTECH9
  • MECHANIC
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If you have a 16 pin then your going to have to take it to a shop and have them read the codes for you that is your starting point. Since you said its starts shifting hard and the check engine light comes on. There is no way to stop the 2nd gear starts untill you fix the problem.
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Sunday, April 17th, 2011 AT 1:41 AM
Tiny
FLAMENBIRD87
  • MEMBER
  • 45 POSTS
Will it harm the trans drivn it like this? I noticed while drivn at speed for over drive it dosent go into overdrive unless you let off the gas while at hwy speeds if you go asteady speed it stays in 3rd. Ill have the codes checked thanks for info
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Sunday, April 17th, 2011 AT 4:01 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I wouldn't drive it like that unless you had to you could damage the transmission further.
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Sunday, April 17th, 2011 AT 3:24 PM
Tiny
FLAMENBIRD87
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  • 45 POSTS
Ok ill keep it in 3rd not overdrive till fixed thanks
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Sunday, April 17th, 2011 AT 4:21 PM
Tiny
SATURNTECH9
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Keeping it in 3rd even you don't know what is wrong with the transmission if you have a pressure issue etc you can still damage your transmission further. Let me know what you find.
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Sunday, April 17th, 2011 AT 7:55 PM
Tiny
FLAMENBIRD87
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Will do thanks
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Wednesday, April 20th, 2011 AT 3:38 AM
Tiny
FLAMENBIRD87
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Ok went to the local trans shop, they did a scan and said it was my speed sensor I asked for the codes they pulled but the beeted around the bush about it and said it was the speed sensor and it would cost 200. Anyways I went and bought one at autozone and installed it my speedo and od still don't work and there is a wineing noise comming from under car
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Friday, April 22nd, 2011 AT 1:25 AM
Tiny
SATURNTECH9
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You never mentioned the speedometer being inop before was it whining before you changed the speed sensor?How does it shift now?I really wish they would have given you the codes that really would have help me help you figure this out.
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Friday, April 22nd, 2011 AT 5:50 AM
Tiny
FLAMENBIRD87
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Yes it did wine before I replaced it but now it wines a little different. It sounds kinda like the rear end is low on fluid. Its not I checked it. Like I said the trans shifts into od only when I let off gas. Its still the same. Does this mean the speedo itself is bad?
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Saturday, April 23rd, 2011 AT 2:49 AM
Tiny
SATURNTECH9
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So no more 2nd gear starts?Hard shifting?Check engine light coming on?I wouldn't say the speedometer is bad especially when you had some speed sensor code.
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Saturday, April 23rd, 2011 AT 3:18 AM
Tiny
FLAMENBIRD87
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No the trans still shifts just like before. Nothing has changed with a new speed sensor. Only a little different sounding wine.I thought changing the sensor would make the speedo work no such luck what else could it be?
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Saturday, April 23rd, 2011 AT 4:36 AM
Tiny
SATURNTECH9
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I really need the codes you have to point you in the right direction at this point it would just be guessing.
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Saturday, April 23rd, 2011 AT 4:43 AM
Tiny
FLAMENBIRD87
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  • 45 POSTS
Ok since the trans shop didnt want to give them to me ill have to take it to another shop on mon. Why doesnt my code checker work it plugs in and says searching but comes up error?
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Saturday, April 23rd, 2011 AT 4:51 AM
Tiny
SATURNTECH9
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What brand and model code reader do you have?
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Saturday, April 23rd, 2011 AT 5:46 AM
Tiny
FLAMENBIRD87
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Its called codekey
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Saturday, April 23rd, 2011 AT 10:41 PM

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