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Car Forum / Chevrolet / Chevrolet Malibu / September 2004Surging 2000 Malibu
My 2000 Malibu has recently begun surging between 40-55 mph. Not sure what could be the problem. Any ideas? Surging 2000 Malibu Group: alt.autos.chevrolet.malibu Date: Sun, Aug 15, 2004, 10:33pm (CDT+1) From: bcglazier@cox.net (2000Malibu) My 2000 Malibu has recently begun surging between 40-55 mph. Not sure what could be the problem. Any ideas? Could be anything ...Fuel pump or regulator...IAC sticking or going bad,,,Carbon buildup your Throttlebody and intake....Do you have any codes?Does it do it over 55 mph Steve C hmm Sounds like a problem that I am having along with a couple other people on this forum. Check this out. http://www.talkaboutautos.com/group/alt.autos.chevrolet.malibu/messages/6113.html Is this what it is doing? I nor any mechanic have had any luck so far with this. If anyone knows anything about this surging please post a reply. Thanks. I havne't really done anything to check on it. The message you gave is exactly what it sounds like. I would hate to think about having to live with it. I probably will chek the fuel system such as the filter and run some injector cleaner through it to begin with. It seems like it is one thing after another with the Malibu. Let me know if any of those make a difference. Welcome to the wonderful world of Malibu. I had a T tech to the tranny already. So unless you are due for a tranny fluid change you can skip that one. I did find a TSB (technical service bulletin) about surging tranny for the malibu. But it seems to only be for the 4L60-F tranny and not the 4T40E that we have. Email me and I will send you the TSB reports. jfarabaugh@comcast.net Good luck ohhhh I just wanted to mention that this has nothing to do with the manifold gasket that that guy had replaced. I havne't really done anything to check on it. The message you gave is exactly what it sounds like. I would hate to think about having to live with it. I probably will chek the fuel system such as the filter and run some injector cleaner through it to begin with. It seems like it is one thing after another with the Malibu. Checking other archives, someone mentioned checking both brake pedal switches. The right one (no idea from what orientation) allegedly is the cruise control brake switch, and commands the torque converter clutch to disengage (even if you don't have cruise...). This switch does *not* control the brake lights; the left switch does that, so don't assume that if you have enough pedal travel before the lights come on you're OK. Another poster mentioned that the EGR could be malfunctioning. > I havne't really done anything to check on it. The message you gave is > exactly what it sounds like. I would hate to think about having to live > with it. I probably will chek the fuel system such as the filter and run > some injector cleaner through it to begin with. It seems like it is one > thing after another with the Malibu. Well, we took our malibu for a trip this past weekend, and I noticed tht not only did it surge around the 40-50mph range, it lack any acceleration around 70-80. It seemed to not be able to get going at that speeds. I guess I'll get a friend of mine's father who runs a transmission shop opinion. This, after spending money on brakes and calipers. Geez. Check the TPS, if so equipped. -Mike -- A happy kid behind the wheel of a 98 Mustang GT Cold air intake FRPP 3.73 gears Steeda Tri-Ax Shifter Full Boar turbo mufflers Hi-speed fan switch 255/60R-15 rear tires > My 2000 Malibu has recently begun surging between 40-55 mph. Not sure what > could be the problem. Any ideas? Throttle Position Sensor, that is. Sorry. -Mike -- A happy kid behind the wheel of a 98 Mustang GT Cold air intake FRPP 3.73 gears Steeda Tri-Ax Shifter Full Boar turbo mufflers Hi-speed fan switch 255/60R-15 rear tires > Check the TPS, if so equipped. > [quoted text clipped - 12 lines] > what > > could be the problem. Any ideas? Yes they do have a TPS but I was not even going in that direction. Have you seen something like this before that the TPS was the cause. Thanks Justin Yeah... my car.. but it's not an automatic. hehe. It couldn't hurt to get out your multimeter & check the TPS. Takes 5 minutes. -Mike -- A happy kid behind the wheel of a 98 Mustang GT Cold air intake FRPP 3.73 gears Steeda Tri-Ax Shifter Full Boar turbo mufflers Hi-speed fan switch 255/60R-15 rear tires > Yes they do have a TPS but I was not even going in that direction. Have > you seen something like this before that the TPS was the cause. > > Thanks > Justin I will check it out just to cover everything. Thanks So I decided to look at the injectors on the Malibu. I got some Lucas (I am not promoting) injector cleaner. I have used other injector cleaners before but this stuff is awesome. I think this surging is strictly dirty injectors. I have put about 600 miles on since I used the cleaner and the car has not done it once! Not to mention that it is running a lot smoother. Check out the Lucas injector cleaner vs cleaners like STP. It is a totally different product. The Lucas product is a thick fluid compared to the other products which I think are mostly diesel fuel. If my car starts acting up again I will be back on here updating this. Thanks to all for helping out. Muy "01" Malibu surges between second and third gear and runs normally when shifting manually. This doesn't sound exactly like what you are describing but it sure sounds close. Is anybody else having this type of shifting problem with a Malibu? Or better yet, a fix without having to pull the transmission? I had the exact same problem, I Changed my fuel filter and it had no effect on the surging. I then changed the spark plugs and the surging is completly gone and the car is running great. Try it out Good Luck. |
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