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Shift kit for an hour?

 
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9C3
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2005 Chevrolet Impala


PostPosted: Sat Nov 07, 2015 11:13 pm    Post subject:  Shift kit for an hour? Reply with quote

My 05 9C3 has about 165,000 miles, & I did a trans flush 3 years ago w/o using the detergent that's usually associated with a flush. I've driven 25,000 mostly highway miles since then. The car runs, & shifts perfectly. Today, after the car sat unused for 4 days, I had a 1/2 hour drive somewhere, & the trans shifted like a shift kit had been installed. Nice firm shifts at the normal RPM, & vehicle speed. It didn't change as the car warmed up. When I arrived at my destination, I checked, & smelled the ATF. All was normal. An hour later on my drive home everything was back to normal. While the car shifts great, it was interesting to experience the "shift kit" feeling again. Over the years I installed a few Turbo 400 shift kits in a 67 Pontiac GTO, & a 70 Olds 442. Of course those upgrades allowed the trans to chirp into 2nd gear which my 3800 can't do, but to those who ever had a Road Runner, or other Mopar with a 727 trans, & removed the accumulator spring, that's what the car felt like today. Has this ever happened to anyone else? GARY

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Impala_03
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2003 Chevrolet Impala


PostPosted: Sun Nov 08, 2015 4:31 am    Post subject:  Re: Shift kit for an hour? Reply with quote

9C3 wrote:
My 05 9C3 has about 165,000 miles, & I did a trans flush 3 years ago w/o using the detergent that's usually associated with a flush. I've driven 25,000 mostly highway miles since then. The car runs, & shifts perfectly. Today, after the car sat unused for 4 days, I had a 1/2 hour drive somewhere, & the trans shifted like a shift kit had been installed. Nice firm shifts at the normal RPM, & vehicle speed. It didn't change as the car warmed up. When I arrived at my destination, I checked, & smelled the ATF. All was normal. An hour later on my drive home everything was back to normal. While the car shifts great, it was interesting to experience the "shift kit" feeling again. Over the years I installed a few Turbo 400 shift kits in a 67 Pontiac GTO, & a 70 Olds 442. Of course those upgrades allowed the trans to chirp into 2nd gear which my 3800 can't do, but to those who ever had a Road Runner, or other Mopar with a 727 trans, & removed the accumulator spring, that's what the car felt like today. Has this ever happened to anyone else? GARY
kicking?


mine jerks off all the time


normally after highway and then using on the street rebuilt at 128k has 163k now.


I timed it just right to let off the gas when it shift into second so it does not firm shift kinda annoying sometimes especially in traffic.

In traffic I just cruise in first gear.. I mean on the 4-0r-5 MPH freeway you only need first gear since it's totally under 10MPH for many many miles Rolling Eyes
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9C3
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Location: PALM BEACH FLORIDA

2005 Chevrolet Impala


PostPosted: Sun Nov 08, 2015 1:56 pm    Post subject:   Reply with quote

I don't know if it makes a difference, but before I parked the car for 4 days before this happened, I had to get from downtown Miami to Palm Beach by 8PM [1 hr 15 min ride] to watch NHRA drag racing. I averaged about 88 MPH on the ride home. Is it possible the trans pressure was higher because of this, causing the firm shifts? GARY

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2011 Chevrolet Silverado


PostPosted: Sun Nov 08, 2015 6:54 pm    Post subject:   Reply with quote

Probably time for a PCS. Mine did the same thing when I drove over 45 minutes.
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VIKING
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PostPosted: Thu Nov 19, 2015 11:54 pm    Post subject:   Reply with quote

Quote:
Probably time for a PCS
my thoughts too, on another forum they were talking about how bad Dexron 3 is and just using Dexron 4 will cure a lot of issues. apparently you have to get all the dex 3 out first. or maybe it was Dexron 6.

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