Question about 1999 Chevrolet Tracker

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Low Fuel Economy

Recently my fuel economy has spiraled down to 23mpg from 30mpg, I have replaced the fuel filter, egr valve, alternator, timing belt, and tensioner. Right now the computer is not displaying any codes.. What could it be?

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Alls u need is a tune up plugs wires cap roterbuting and it will be good as new

Posted on Oct 18, 2008

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2006 Aveo has low fuel economy. Changed out thermostat because it was not keeping temp at acceleration. Now the temp is stable, but still seems low at 180 F and still have bad gas mileage. No check engine...


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What causes a 1994 chevy pickup with 350 motor to surge at idle then die. Has little power, runs rough, bad fuel economy. disconnected egr valve, no change, replaced throttle position sensor, no change.


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Here are some tips on how to improve your fuel economy:
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- Take it easy on the throttle. Don't accelerate quickly or stomp on the brakes. Coast to a stop. You'll save on fuel as well as wear and tear on your brakes, which will save you even more money.
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- Don't warm up your vehicle for more than 30 seconds. This is a tough one, especially for us here at Consumer Guide®, where Chicago's frigid winters are a way of life. Thanks to technology, however, most modern fuel-injected cars only really need 30 seconds to warm, and hot air can start blasting into the cabin very shortly thereafter.
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1 Answer

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Rough idles can be a lot of things, usually something to do with the fuel mixture or timings. Dirty injectors, distributor problems, streatched out timing chain/belts... those are a few common rough idle issues.

Has the fuel economy gone down? Does it still have good acceleration?

Peace,

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1 Answer

Ck engine code po400


HI
P0400 :- (EGR) exhaust gas recirculation system -flow malfunction
the mine function of this system is economy of fuel and
keep clean air with low emission of bad gases and
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intake to re burn the unburnt fuel
the problem cause from :-
hose leak \ blockage , wiring , EGR valve , EGR solenoid , ECM

WITH MY BEST WISHES

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