Chevy Lumina

Why would a 1991 Chevy Lumina 3.1L only go 10-15 mph uphill on the highway even after the fuel filter and spark plugs and spark plug wires have been changed?


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2006-01-08 16:00:58
2006-01-08 16:00:58

Have you had the catyltic converter checked? Sounds like it might be blocked. Get a vacuum gage and conect it to a good vacuum source and hold the idle speed at about 2500 rpms and watch the gage ,if it drops slowly the converter is blocked. You might also want to check your transmission oil. If it isn't circulating properly you might be burning the bands on your transmission with the resistance of going up hill.


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Plugged fuel filter, air filter, Restricted catalytic converter,

Once you have achieved highway speed, you would stay in the highest gear, except for steep uphill or downhill grades.

i'd check the plugs. Thanks I changed the plugs Still doing it i seems like its not getting the gas it needs to go uphill or to speed up i thought it might be bad gas or a fuel filter Could that be it please help EGR valve will do that and so will early problems with the cam shaft position sensor.

It is most likely just the fuel filter that needs to be replaced.

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Gravity. Or your fuel pump is bad. There should be enough pressure from your fuel pump to push the fuel to the injectors. A clogged filter could do it also. I would change the filter first.

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uphill, for an experiment look for "Do forest fires move faster uphill or down hill

Fuel filter may be plugged. Catalytic converter may be plugged. Engine may be in need of a tune up.

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Check and check.Going uphill causes an increased engine workload, try downshifting your gears. it it doesn't work, have your clutch checked.

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