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Have a2004 avalanche and when I slow down from highway speeds coming into city my 4wd kicks in automatically---might be heat related as it seems to go back to 2wd after a cool off period-----this is electronic control 4wd-------any thoughts?
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My Buick Le saber gets 25 to 30 on the hi way depending how far I drive but around town I get 12 to 18. The reason is short trips the engine does not warm up so your choke automatically kicks in and does not shut down till the engine is up to temperature. Also Short runs means a lot of changing gears so the engine is reving and slowing down for stop lights etc. To get good milage the engine has to maintane a constant even speed.
A 99 sonoma 2wd 2.2L 4cyl with the 4 speed auto will get 22mpg on average, 19mpg in the city and 26mpg on highway 4.3 6cyl 4wd with 4 speed auto will get 18 combined average, city 16 and highway 21. 4.3 2wd auto will get 18 combined average, city 17 and highway 22. 4.3 5 speed manual 2wd will get 19 combined, 17 city and 23 highway. 4.3 4wd 5 speed manual will get 18 combined, 17 city and 21 highway. These estimates from an online source, my buddy has the 4.3 4 speed auto 4x4 and he averages about 16 on average. hope this helps.
Manual and autoTransmission: EPA city/hgwy City and Highway: 5-speed manual: 23/33 " " " 3-speed automatic: 21/26 Real world Average city and highway combined MPG test by Consumer Reports:5-speed manual: 21.5 3-speed automatic: 19.4
Does it happen in stop and go traffic? If the answer is no and the only time it does happen is at speeds at about 40 mph's or better then its the brake switch its failing to cancell out Torque converter clutch solenoid (TCC). If it happens at all speeds take the vehicle to a shop that does SCOPE TESTING NOT A SCANNER this way they can hook the vehicle up to the SCOPEMETER and drive around with it to see what turns off (other than the vehicle) and causes the vehicle to die.
Check your rad hoses. They will tend to collapse (**** in) & cut down on flow at highway speeds, more than city, due to increased demand & flow on cooling system. If they don't feel relatively stiff, I'd change them. You might even see them **** in while sitting and revving the engine a bit.
Compare Fuel Estimates for 2006 Mitsubishi Raider Trucks Here's a comparison of EPA fuel economy ratings among the trucks in the 2006 Mitsubishi Raider lineup. As always, your mileage will very likely differ. 2006 Mitsubishi Raider 2WD 6-cylinder Trucks * 3.7L, 6-speed manual, 16 city / 22 highway * 3.7L, 4-speed automatic, 16 city / 22 highway * 3.7L, 6-speed manual, 16 city / 20 highway
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