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> Rmps Jump And Drop
shotgun 97
post Sep 21 2009, 06:30 PM
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ok so something is def wrong with my car.. i start off driving fine but after a while the rpms start to jump by itself and then drop dramatically. when i go up a big hill the rpms drop to 1500( pedal to the floor) and the car is slow as shit and the car sounds like theres no power. i changed spark plugs and wires and even replaced the valve cover gasket and nothing. please help my car has never been this slow and its def more then just a loss of power... HELP
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Prodigy31307
post Sep 22 2009, 01:10 AM
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Fuel injectors, Fuel pump. Start from the top. What makes a car run.

Battery ---> Spark Plugs

Oil--->Oxygen

fuel

and just to ask... what gear were u in when you were going up the big hill. I can only assume that you drive an automatic if you weren't in a lower gear going up a big hill (IMG:style_emoticons/default/tongue.gif)
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shotgun 97
post Sep 22 2009, 08:52 AM
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QUOTE (Prodigy31307 @ Sep 22 2009, 02:10 AM) *
Fuel injectors, Fuel pump. Start from the top. What makes a car run.

Battery ---> Spark Plugs

Oil--->Oxygen

fuel

and just to ask... what gear were u in when you were going up the big hill. I can only assume that you drive an automatic if you weren't in a lower gear going up a big hill (IMG:style_emoticons/default/tongue.gif)

Yea i drive an automatic and i was in second gear. It happens to me everytime i go up a big hill and after the hill the car starts reving high. When i go up the hill the car sounds like its going to die on me. idk whats going on, no check engine light but the car def has something wrong... Just to give u some background.. my transmission sensors failed which caused my car speedometer to not function. So i changed the sensor and for about a week the car was fine, and now i have this problem..... please help
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dannwo1
post Sep 22 2009, 08:35 PM
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Sounds like your engine is running fine, but your trans is kinda confused as to how it should put the power to the wheels. So you're experiencing "free revving" when you're in too low of a gear, and low RPM's due to "chugging" in too high of a gear.

Start with the basic cheap stuff just to get it off the list of possible causes. Get a trans service. (your probibly due for one anyhow) New fluid and a filter could change the way your car is shifting dramaticly. See if that helps at all and then get back to us.
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shotgun 97
post Sep 22 2009, 10:14 PM
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QUOTE (dannwo1 @ Sep 22 2009, 09:35 PM) *
Sounds like your engine is running fine, but your trans is kinda confused as to how it should put the power to the wheels. So you're experiencing "free revving" when you're in too low of a gear, and low RPM's due to "chugging" in too high of a gear.

Start with the basic cheap stuff just to get it off the list of possible causes. Get a trans service. (your probibly due for one anyhow) New fluid and a filter could change the way your car is shifting dramaticly. See if that helps at all and then get back to us.

I got a trans service about 3 months ago. And now i just changed the plugs, wires and valve cover gasket. Nothing worked car seems like its going to shut off while driving up a hill. what else can it be?
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