Question about 2001 Chevrolet Malibu

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Surging at 40 to 60 mph

Rpms are going up and down

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That sounds like a transmission slipping. does it idle ok in park.

Posted on Dec 07, 2012

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Posted on Jan 02, 2017

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This engine has a surge; AT 35-45mph,it's a bit more prounounced, not as bad, but still there at 60mph. As the tach goes up some, then down, so does the motor, up then back down, etc.Any ideas?


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My cirrus 99 is knocking when at a certain speeds 40,60 mph, when about to stop ?


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Jun 13, 2012 | 1999 Chrysler Cirrus

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I have 94 dodge 1500 had the transmission rebuilt about 6 months ago .on the interstate about 10 min into the drive at 65 to70 mph it starts surging. It done that before the rebuild and after. Checked it...


If that transmission has torque converter lock-up, it may be disengaging and engaging the lock-up causing the rpms to raise and drop about 500 rpms. (causing a surging fealing). If you experience this again notice the rpms and see if it's doing that. If that's the case I'd say your transmission is getting too hot and the torque converter lock-up solenoid is kicking on and off or acting eratic. If it were me in this situation I'd invest in a $30 transmission cooler and install it using the directions that come with it and see if that helps it.

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My 99 bonneville sse is surginging badly and wont accelorate properly or past 30 mph if im goin up hill. my check engine light is on steady, and steady when it is surging, but when i floor it to make the...


May be a plugged fuel filter.If you have not done a tune up in a while it may also be time to replace plugs,wires,and cap and rotor if you have one.You can go to autozone,I hear they scan trouble codes for free.This way you will know why your light is on.Well good luck and hope this heped.

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1995 3.8L Buick surges at ~50 mph and ~70 mph


Check fuel pump pressure after you replace fuel filter.

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2000 Chevy Silverado


I would get a techie to check the throttle position sensors... this has been a problem on the Chev/GMC set up.

May 19, 2009 | 2000 Chevrolet Silverado

1 Answer

Around 1500 rpms or 55 mph engine seems to bog down


It sounds like your low on fluid, or your transmission filter is dirty and the front pump is not getting enough oil supply. Worst is your front pump is going bad. 
Check the fluid level and see if it's burnt. Good luck

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1 Answer

1999 dodge truck desiel auto surging between 30 and 40 mph between 300 to 400 rpms almost like its shifting up and down in gears


it could either be bad injectors or the injector pump could be bad, first try jsut changeing the fuel filter. then go to the injectors and if that dont fix it its got to the injector pump.

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1 Answer

Throttle cable???


Have a look at the cable where it hooks up to the throttle body.
Have someone push down on the accelarator while you look, make sure the throttle body is opening all the way.

Jul 11, 2008 | 2001 Jeep Wrangler

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