Rpms
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Teching In
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Rpms I just had my new transmission from Triple Edge performance put in my 2007 Grand Prix GXP today but now going 65 mph my RPMs are over 2500 but before the new transmission at 65 it was running around 1700 RPMs and of course now my gas mileage used to be 27 MPG and now I'm getting 13 MPG any thoughts?
I would check with Triple Edge to see what was done or check your paperwork because what you are describing is a gear change.Factory ratio is 2.93, my guess is they put in 3.29 or maybe even 3.69.
Sounds like the converter isn't engaging. Have you driven it enough yet? Dave told me 100 miles to break it in. Also your converter won't engage until the transmission is at a certain temp.
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Joined: Jun 2007
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From: Dolla$ , TX
I just had my new transmission from Triple Edge performance put in my 2007 Grand Prix GXP today but now going 65 mph my RPMs are over 2500 but before the new transmission at 65 it was running around 1700 RPMs and of course now my gas mileage used to be 27 MPG and now I'm getting 13 MPG any thoughts?
Post back your findings after you bring it back to Triple Edge to see whats going on. GM feels 220 degrees is normal lol. The car will probably need a transmission cooler as well ,if it already has one that's a problem.Good luck.
at 65mph the converter not locking still wouldnt put him over 2500rpm's with the stock gear set. Only other thing I could think of is possibly that hes not shifting into 4th?
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Teching In
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Yes I already have a aftermarket tranny cooler on it.dave said everything with the transmission is electronic and I might have some kind of sensor gone bad.i have an appointment Wednesday with my local mechanic shop (same people that installed my transmission) to take it for a ride while hooked up to a computer to see what it's doing or not doing and hopefully they can figure it out.already sunk alot of money in this car so I have my fingers crossed.dave told me to keep him updated.
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Teching In
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Besides the high RPMs which leads 2 overheating and bad gas mileage the new transmission shifts like it's brand new and by the looks of it, using my tap shift, it's shifting in all gears. There's not much of a change from 3rd to 4th but there is a change
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it needs time to break in and the computer to learn
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Here's a little update Friday morning on the way to work the RPM's went to normal about 1700 at 65 but on my way home it went back to 2500 RPMs so I messed around a bit and stuffed the throttle to about 105 mph for about 10 seconds then used my tap shift from 3rd to 4th a few times got to a stop sign shut my car off then turned it back on and it went back to 1700 RPMs at 65 mph and it did the same thing this morning until I shut the car off and turned it back on and went to 1700 rpm.its got me stumped?
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Joined: Jun 2007
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From: Dolla$ , TX
Here's a little update Friday morning on the way to work the RPM's went to normal about 1700 at 65 but on my way home it went back to 2500 RPMs so I messed around a bit and stuffed the throttle to about 105 mph for about 10 seconds then used my tap shift from 3rd to 4th a few times got to a stop sign shut my car off then turned it back on and it went back to 1700 RPMs at 65 mph and it did the same thing this morning until I shut the car off and turned it back on and went to 1700 rpm.its got me stumped?