Transmission Jerks When Cold
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Transmission Jerks When Cold
I have a 2001 Buick Regal LS and when it'* cold and the RPMs are high it jerks when I put it in gear. If I wait until the RPMs decrease as the as the engine warms up it'* smooth. I used to have a 3.1 liter Grand Prix with a 4t60-E and I never had this problem. Is there something in the trans that should soften the jerk under high RPM conditions? Any help will be appreciated.
#2
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If you drop all the way down to 1st, does it still do this? It could be a problem with the forward servo piston. This is on the back outside of the transmission. When cold the piston my not be moving smoothly and causing a jerk. Over time the cylinder walls get very smooth and harsh shifting is what happens. The cylinder walls can be scuffed up a bit and correct the problem. I've done a few of these with great results.
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The same thing happens to mine. Up until it gets heated it jerks. And then theres the other problem where it doesn't catch the gears that I was talking about
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I will have to wait until I get my car back together to check it if I shift to first. It does it in reverse and forward when the RPMs are high. Once they come down, it doesn't do it anymore. Even a coup minutes after I start it when the RPMs come down it'* smooth.
#5
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It'* a bit normal in the Regals. Have you tried flipping the mounts or checking to see if the ones at the radiator support are looking worn?
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