Question about 2004 Isuzu Rodeo

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Will not accelerate. Runs smoothly if you can get

Will not accelerate. Runs smoothly if you can get it past 4000 rpm. starts without difficulty. Have replaced thottle control on accellerator and on throttle body with no improvement/

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Check the fuel presshure

Posted on Jul 12, 2010

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IF you have a carby then take it apart and clean it out as all the throats are not working properly including the accelerator pump.

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RPM high n everytime i shift then car speed keeps on going fast n i dont even step onto the accelerator so i can add more speed of stay on a constant speed


You have to change your clutch kit. I just had this issue and after changing it it runs smooth again.
Just to confirm, you shift gear up, your engine roars (goes up to 4000 or more RPM) but doesn't gain speed until few seconds later after the RPM is back to normal.
If so that's the clutch plate causing the issue.
Please rate

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Hi i have a 2002 hyundai xg350l while driving the car accelerates without depressing the pedal further, in park when i reach 4000 rpm the rpm shoots up to about 4500 rpm without depressing the pedal...


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Engine surges under load at 3800 rpm


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May 30, 2009 | 1999 Pontiac Grand Am GT

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My 2000 Ford Taurus at about 4000 rpm does not go further with rpm even when accelerator is press more. It gives off a pulsating choking sound at above mentioned rpm. At below 4000 rpm the engine runs...


To do this in park or neutral is normal. To do it while driving is not.
There are so many things that could cause this but if you have no check engine light and it runs normally up until then I would suspect you have an exhaust restriction. This can be checked fairly easy on this vehicle, it has a DPFE sensor that mounts near the top back side of the motor.It will either be black or silver,will have a 3 wire connector to it and 2 hoses going down the back of the motor to the exhaust. You can disconnect one of these hoses and install a vacuum/pressure guage and measure exhaust back pressure. It should be 1 psi or less at idle and when you go to wide open throttle should not exceed 3 to 4 psi. If it does something in exhaust,most likely one of the catalytic convertors is stopped up.

Feb 19, 2009 | 2000 Ford Taurus

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