After high speed run tranny shifts hard, change fluid?
07-07-2003, 09:18 PM
#1
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Location: altamonte springs florida u.s.a
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After high speed run tranny shifts hard, change fluid?
My for starters car only has 53k miles, it's in great shape & last time i checked the tranny fluid it looked good.
I went for a a little high speed fun fun on the 428 last weekend, i was driving at 95mph for a little while, then i took it up over 120mph for a little bit.
I got on it hard leaving two toll booth's & one more time getting on the turnpike.
When i got back into the city & normal driving, i noticed 1st gear would shift really hard "like a shift kit" 2nd gear too but not as hard as 1st.
I let it sit for about a hour & it drove fine after that, but it had never done this before.
I was told the fluid got too hot, but my tranny should be fine & just to change the fluid.
Is this what i should do?
Also, i thought all Z28's that came with the performance axle "such as my car" came with a tranny cooler also.
If so why did my tranny heat up so much, thanks.
I went for a a little high speed fun fun on the 428 last weekend, i was driving at 95mph for a little while, then i took it up over 120mph for a little bit.
I got on it hard leaving two toll booth's & one more time getting on the turnpike.
When i got back into the city & normal driving, i noticed 1st gear would shift really hard "like a shift kit" 2nd gear too but not as hard as 1st.
I let it sit for about a hour & it drove fine after that, but it had never done this before.
I was told the fluid got too hot, but my tranny should be fine & just to change the fluid.
Is this what i should do?
Also, i thought all Z28's that came with the performance axle "such as my car" came with a tranny cooler also.
If so why did my tranny heat up so much, thanks.
07-07-2003, 11:50 PM
#3
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Location: altamonte springs florida u.s.a
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Thanks for the info, my dealer told me to do it at 60k but i figured now was about time.
I also saw a few 20 page posts on peoples tranny's going to sh$# after a fluid change or is that after a fluid flush?
I also saw a few 20 page posts on peoples tranny's going to sh$# after a fluid change or is that after a fluid flush?
07-08-2003, 01:29 AM
#4
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Location: Houston TX
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I didnt do it a complete flush, i just dropped the pan at 40k miles and added a new 5 quarts. I'll probably do that again at 60K... but yeah ive heard **** goes wrong after a complete flush...
djgerry, what does your car run in the 1/4?
djgerry, what does your car run in the 1/4?
07-08-2003, 01:45 AM
#5
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Location: Kansas City suburb of
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Usually this only happens after a tranny has been neglected and the fluid is not changed for a LONG period of time.
There is a tranny cooler of sorts in your radiator but an aftermarket cooler such as the B&M or a hayden is cheap insurance on any automatic equipped car, just plumb it in series with the stock cooler and it should be fine.
You should be ok with a fluid change but if you plan on doing alot of these sustained high speed shenanigans I would invest in a tranny cooler.
There is a tranny cooler of sorts in your radiator but an aftermarket cooler such as the B&M or a hayden is cheap insurance on any automatic equipped car, just plumb it in series with the stock cooler and it should be fine.
You should be ok with a fluid change but if you plan on doing alot of these sustained high speed shenanigans I would invest in a tranny cooler.
07-08-2003, 01:49 AM
#6
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Location: Somewhere between a shotgun barrel, and a blood spatter on the wall.
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i can vouch for high temps KILLING a tranny.... see my sig 
i recommend the hayden tranny cooler... the largest one... its made for a rv with up to a 30-38 k lb gross vehicle weight...
one of our board members recommended it to me... and it seems to me like he REALLY knows what hes talking about...
i recommend the hayden tranny cooler... the largest one... its made for a rv with up to a 30-38 k lb gross vehicle weight...
one of our board members recommended it to me... and it seems to me like he REALLY knows what hes talking about...
07-08-2003, 02:24 AM
#7
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Location: altamonte springs florida u.s.a
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Originally posted by Nox1d3
I didnt do it a complete flush, i just dropped the pan at 40k miles and added a new 5 quarts. I'll probably do that again at 60K... but yeah ive heard **** goes wrong after a complete flush...
djgerry, what does your car run in the 1/4?
I didnt do it a complete flush, i just dropped the pan at 40k miles and added a new 5 quarts. I'll probably do that again at 60K... but yeah ive heard **** goes wrong after a complete flush...
djgerry, what does your car run in the 1/4?
My sixty was 2.167, judging by my RWHP & the sixty, the car should run quicker.
Im getting D/R's soon, so i'll hit the track armed with those & my few intake mods in search of better times.
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