2001 xg-300 stall when to cold,no acceleration,check engine on
Engine rev to lo after rev to high alway have to find the proper spot on gas pedal if not it just slowing down,sometime it's just taking off like a bullet(verry rare exxept wen it's warm outside) doesn't like to much humidity neither on highway take a bump it slowing down by itself that car freking me out PLEASE! HELP ME OUT!before i burn that car???? THANK YOU.patrick.
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Dec 12, 2010 - 14 posts - 14 authors
Learn more about Mercury Mountaineer at the Edmunds.com Car Forums! ... Light came back on but no more stalling at speed. ... I have the same stalling at low idleproblem (under 500 RPM) with my 2003 Mountaineer 4.6L V8 AWD. ... My computer is telling the engine to rev at a high RPM on startup, then ...
You don't say what size engine you have, so diagnostic analysis is a bit difficult. Please supply engine size and answer these questions.
1. After it stalls, do you sometimes smell fuel? 2. Does it restart easily after a stall, or do you have to hold the gas pedal to the floor to restart it? 3. Can you keep it running by working the gas pedal? 4. Has you fuel consumption increased since this began?
I ask these questions because on most engines there is a coolant temperature sensor that the ECM used to control the amount of fuel to the injectors based upon the engine coolant temperature. When the engine is cold it supplied more fuel than when warm. If the sensor malfunctions it tells the ECM that the coolant is -40F and that causes massive fuel to be supplied. This may not affect a cold start once the engine needs the fuel, but it will flood and stall out the motor when warm. If you can keep the engine running by pressing the gas pedal, you are allowing the motor to rev up and use the extra fuel, but you will find you gas mileage reduces by as much as half.
you may have a dirty fuel filter or the throttle plate may need cleaning.the throttle plate is the valve that moves in the intake when you move the gas pedal.if they get too dirty they cause a restriction in the intake and cause the car to stall.it also could be a tps sensor problem but this should put the check engine light on but not always.the breaking up of the motor when you rev it to 4000 rpm`s is the rev limiter in the computer that shuts down the firing of the plugs and injecotrs so you don`t cause damage to the motor when there is no load on it.
full power is only achieved when the engine is fully warm(operating temp).so if you accelerate more than, say, a third of the gas pedal,the car will feel sluggish.
this is more apparent when first starting the car in the morning in winter.almost like the car is going to stall.
most wear in the engine is leaving it to idle when cold you should always drive the car straight away from cold.then when hot turn on the a/c if required....
2001 elantra gets 300 miles per tank of gas regular unleaded
slow to respond when accelerated 105 K original miles recently purchased
no check engine lights most parts look original engine revs up but tranny seems slow to respond?
One of your intake manifold gaskets went bad and it is sucking in air where it should'nt be. This problem is very common on this motor. I'm 100% sure that is what it is. But no ofense if you can't figure out how to get your radiator cap off , then this job is probably a little much for you.
vacuum leak......bad tps.......bad mass airflow meter system........any of those are suspect...... also check for bad ground at battery to be sure all is not computer freak out from bad readings ...good luck