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When doing 80mph...

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Old Aug 2, 2010 | 06:42 PM
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Unhappy When doing 80mph...

well any amount of speed actually, if I let off the gas the car automatically decelerates. Basically I can't cruise! Anyone know what cause this?? I already changed the rotors, new pads, my bushings are bad though, could those be the culprits???
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Old Aug 2, 2010 | 06:49 PM
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Our cars weigh a **** load, that's the issue.
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Old Aug 2, 2010 | 06:51 PM
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...decelerates like how fast?..every car is going to obviously slow down when u left off the gas..usually the higher you are up in the rpm range the faster it will slow down...
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Old Aug 2, 2010 | 06:54 PM
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if there is no gas it will not keep a steady speed..

the culprit is your foot not on the gas.
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Old Aug 2, 2010 | 07:20 PM
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Originally Posted by sc300jz
if there is no gas it will not keep a steady speed..

the culprit is your foot not on the gas.
Nah really? C'mon I know the difference! I'm saying when i get up to a speed where any other car would continue with gravity i can feel the engine making the car slow down! Almost as if i put the car in second gear and downshifted, not that severe but that! I put the car in neutral and it did what it was supposed to do which is cruise. Now do you get what I'm saying?
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Old Aug 2, 2010 | 07:23 PM
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Originally Posted by imDementeD
...decelerates like how fast?..every car is going to obviously slow down when u left off the gas..usually the higher you are up in the rpm range the faster it will slow down...
If me and another car were to start out at the same time and speed and let off the gas at the same time, I'm 100% sure the other car would roll further,?
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Old Aug 2, 2010 | 07:33 PM
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Default Check e-brake

Jack up each wheel and spin. See if there is any drag. Pull on ebrake and see if it releases promptly.
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Old Aug 2, 2010 | 07:34 PM
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how big are you rims? do tires rub

maybe tranny issue
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Old Aug 2, 2010 | 07:42 PM
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will try and do the spin test. my rim are 20's no rub
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Old Aug 2, 2010 | 08:23 PM
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My car does this too. I noticed going down a slight incline the car would slowly decelerate then. Don't know the culprit
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Old Aug 2, 2010 | 08:24 PM
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i understand what your saying..and has it always been like this? just noticed it? had other sc's to compare it to..
just trying to make sure you realize not all cars will "cruise" the same..and just making sure its not you just thinking somethings wrong when maybe there isnt...thats all
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Old Aug 2, 2010 | 08:41 PM
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All cars naturally decelerate. I think you might be high when you notice this effect of down shift deceleration and perhaps it just makes it seem more intense. Are you in a SC400 or 300? how high are your rpms when you left off the gas and are you on a inclining or declining road? What imDementeD said...the higher rpm range you're at the quicker it will decelerate till it downshifts and continues so on.

edit: was kidding bout that second sentence that stuff is not allowed of CL lol

Last edited by ashtray; Aug 2, 2010 at 08:45 PM.
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Old Aug 2, 2010 | 08:51 PM
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^says the guy named ashtray...rofl
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Old Aug 2, 2010 | 08:58 PM
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Originally Posted by TankMR
^says the guy named ashtray...rofl
Yes indeed. lol Who better

To OP, also post all the specs on your car.
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Old Aug 2, 2010 | 10:38 PM
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Is your tranny going into overdrive ok?
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