Question about 2003 Kia Sorento

3 Answers

What can cause a vehicle to act like I'm braking in the middle of accelerating?

In the middle of driving for a little bit my car wants to act like I am using my brake in the middle of acclerating. I know when this first started, it was giving me rpms when I placed my foot on the gas (in the process of slowing down). Now, I don't even get any type of RPMs when this happens now. I also, know that since this problem has arised my RPMS are higher while driving, (of what it can drive). When I got the codes pulled they come back as a emmissions error. Which the guy told me that it can range to many of different problems like the Catalytic Converters, replacing the gas cover, a bad sensor, a misfire, etc. I have already changed out all 3 Catalytic Converters. All the sensors possible except the throttle. Cleaned the fuel pump and its components. Drained the fuel tank. All my belts are good. The only thing is I am in the process of doing the tune up. I know I need spark plugs and the wire set, (my fuel filter was changed out before the converters was placed on) is there anything else I am leaving out for the tune up? I can't drive it anywheres to get anything tested. (I'm a female that is going to do this by myself with barely any help.) Is there anything that I could be missing that will give this type of problem while driving??? Please, let me know what you did in my very same situation with this crazy car. I haven't been able to use my car for a longtime and tired of it just sitting there.

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Have the fuel pressure and VOLUME both diagnosed. You can have decent pressure but not enough volume to feed the engine under load.

Posted on Jun 19, 2015

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Hi, my 2002 kia sedona is giving me alot of problems. It shuts off on me at stop lights. The RPMs go up and down while driving. I dont know what the problem is. I have put over a $1000 into it trying to figure this out. Ugh! So frustrating. Any sugestions?

Posted on Jun 19, 2015

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You should have your fuel pump pressure tested. your pump may not be holding pressure and loses power while driving also when its parked the fuel may be leaking back into the tank. whoever told you your cats were bad got you for some money.

Posted on Aug 07, 2013

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Posted on Jan 02, 2017

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SOURCE: 2002 Kia Roi just stops running going up hill and slowing down to

are you geting a spark from the plugs.if not leave the fuel system alone.And concentrate on the coil and the crank sensor.

Posted on May 30, 2009

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SOURCE: kia sedona 2005 showing a code of po430.

what happens when they put the sensor reader up the exhaust pipe ?? does it read the right readings ---like particle emissions ?? what percentage----co---co2---

Posted on Aug 13, 2009

  • 77 Answers

SOURCE: check engine light on car dies when I touch brake

Check Engine light is on. Find out what DTC (diagnostic trouble code) is set and I can help you more. You can get a code puller from your local parts store.

Posted on Feb 01, 2010

  • 7 Answers

SOURCE: The reason I'm checking the timing belt is that

unplug the fuel injectors, check the olhms on all. the readings should all be the same, around 11-11.5 olhms. Any readings that are higher is a sign of a bad injector which is what your problems sounds like., putting to much fuel to a cylinder causing different fuel amounts to each cylinder and causing it to backfire out of the throttle body , excess fuel . Also remove the throttle body and clean with cleaner and a toothbrush after replacing any injectors. Or there's a simpler answer and that the cambshaft is worn-out/round causing the lifters not to open enough to let in all the fuel. A worn belt would not cause misfires only on select cylinders but rather jump timing, slipping a notch on a gear and possibly bending a valve or valves and this cause a loud clacking or a really a sign to quit running the motor because it's broke! Good luck.

Posted on Oct 16, 2010

  • 1 Answer

SOURCE: My 2001 Kia Rio idles

It may me the Transmission Modulator Value.
a small diaphram value that measures pressure and tells the transmission when to change gears. If the diaphram is leaking it never can measure the right pressure. its on the transmission housing. Just disconnect and screw it out.

Posted on Oct 28, 2010

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1 Answer

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It sounds to me like a problem with cruise control? Turn it off and/or unhook it, drive it a bit and see if accelerating problem goes away? If it does, you need to troubleshoot the cruise control. Any applicable trouble codes?
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You could have a weak fuel pump causing it not to accelerate to a higher speed. The brakes going to the floor indicates that there may still be air in your brake system, ora bad brake booster not creating the needed vacuum for high velocity braking. The other thing is if you have an EBCM (Electronic brake control module) it could have dirty connections or just be going bad. Hope this helps.

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Loss of brake during sudden acceleration.

Click the link below to troubleshoot this problem: ---
Car loses power while acceleration?

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Acceleration lag problem?

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I would pull the fuse. I do not like traction control or abs personally and I pull the fuse on both. They tend to have problems in their circuits and the pumps and I do not trust them

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Have the cruise control module checked. They recalled some about improper wiring and fire hazards when the vehicles are parked; but in motion problem might cause vehicle to act like cruise was kicked in.

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you might have an electric problem since the brake switch comunicates with the transmission module

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