Question about 2000 Pontiac Bonneville

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Loses power going up hills and will not shift gears correctly

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You need to check fuel pressure, exhaust back pressure for possible plugged catalytic converter and scan for any service engine light codes. If fuel pressure is low or volume is low you have a fuel system problem. If the back pressure is too high restricted exhaust system. Service engine light on use those codes to help guide you to potential problem.

Posted on Jul 21, 2010

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I have a 2005 KIA sedona. And when driving it sounds like it has a turbo. It also has no umph.instead it loses power going up hill. while the turbo sound it hesitate to shift gear.


Yours should be a 2.9 crd Turbo diesel if I'm correct & from what your describing sounds like you need to change out the diesel filter. These filters get clogged causing lack of power specially going up hill.
Is it blowing out black smoke? There could be other problems as well. Need more info like is the engine light on?

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My truck loses power going up hills


I take it that this has a manual gear box and clutch operation. If so the problem is that the clutch is slipping. Check that the clutch slave cylinder is fully releasing the clutch bearing ( faulty master cylinder). If all is ok then the clutch pressure plate is weak allowing the clutch plate to slip under load. In that case the fix is to remove the gear box and replace the clutch assembly with a new clutch kit.

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2005 chrysler sebring loses power driving up hill & RPM is up high, Ive changed, spark plugs & air filter. dont know what to do.


Not sure I am following your story.
Are you saying the transmission is slipping and therefore the RPM is high even tho the road speed is not ?
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I have a 2.4 diesel 375 nm model and i have been told that the problem is solved by installing the correct fuel filter. Mine loses all power and stops, and the curly light comes on, and I switch it off and start it again. It works every time but is bloody dangerous on a hill when passing someone and towing a trailer.

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Car starts rough idles very low almost dies while idling and will die when put in gear. will not accelerate up hills (loses power). have been told there are many vacuum leaks and the transmission will...


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Loses power on steep grade


Sounds like you need a clutch replacement.

Try this. Go somplace where there are no cars, and no possibility of running into anything. Stop the car. Set the park brake. With the engine running, put the vehicle in 1st gear. Hold the foot brake pedal, and give it gas, and let out the clutch slowly.
If the engine does not stall real quick, the clutch disc is bad.

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It sounds like a tranny problem. Without more info kinda hard to diagnose. The simplist thing to check is tranny fluid. If its low, going up a hill will pull fluid out of the torque converter. It could be the converter itself. It could possibly a fuel problem, but unlikely. Hope this helps. John...

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