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question about uphill driving

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Old Mar 22, 2012 | 10:07 AM
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Default question about uphill driving
I know that 3gs have the hill assist but I am having a problem upon a uphill where my car shudders when accelerating. Is this normal? There are no lights flashing, just shudders only going up a hill.
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Old Mar 22, 2012 | 12:26 PM
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I have no problems going up hills. Not normal. Are you using Premium gas and if so good gas? Might try a tank of 2 of Chevron or Shell and see if the problem persists.
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Old Mar 22, 2012 | 05:57 PM
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i always use 91. Just came back from dealership and they told me that its normal for the car have shudder when going up the hill. Is this valid? I never had such problem with my other cars.
Last edited by LADavidGS; Mar 22, 2012 at 06:05 PM.
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Old Mar 22, 2012 | 09:53 PM
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Originally Posted by LADavidGS
i always use 91. Just came back from dealership and they told me that its normal for the car have shudder when going up the hill. Is this valid? I never had such problem with my other cars.
Does it do it going up hills around 15-20mph?
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Old Mar 23, 2012 | 12:59 AM
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it only happens when @ full stop going up hill. When accelerating, the car jolts with a hard thud: almost the car is looking for a gear. I checked with a local lexus dealership and they told that its normal for 3gs to have such issue. I am having a hard time believing such where I never had such problem with my other cars before.
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Old Mar 23, 2012 | 03:42 AM
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The thud may just be the car downshifting.

To avoid that jolt, try and get the car into a lower gear before approaching the hill.
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Old Mar 23, 2012 | 10:09 AM
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Originally Posted by hypervish
The thud may just be the car downshifting.

To avoid that jolt, try and get the car into a lower gear before approaching the hill.
So, do I shift manually when accelerating from full stop going up hill?
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Old Mar 23, 2012 | 08:26 PM
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Originally Posted by LADavidGS
I know that 3gs have the hill assist but I am having a problem upon a uphill where my car shudders when accelerating. Is this normal? There are no lights flashing, just shudders only going up a hill.
The GS has hill assist? I thought it was only the LS?
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Old Mar 23, 2012 | 10:09 PM
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my car like that too
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Old Mar 24, 2012 | 12:39 AM
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strange, i never had with such problem.
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Old Mar 24, 2012 | 10:35 AM
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Originally Posted by mrbulk
The GS has hill assist? I thought it was only the LS?

sorry i meant, Hill - Start assist control system (owners manual page 429)
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Old Mar 24, 2012 | 04:03 PM
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Originally Posted by LADavidGS
sorry i meant, Hill - Start assist control system (owners manual page 429)
Ahh, got it. Mine is on page 169.
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