Question about 2001 Kia Optima

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2001 kia optima hesitates on acceleration gets better when warm, but still does it, has 2.4 engine

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3 possible problems your mass are flow meter/senso could be going bad but not bad enough to register a fault, the same for your idle air valve and also your throttle position sensor. all 3 of these are on your throttle body .
with the engine running tap the side of the mass air flow with the back of a screw driver, if the engine sputers mass air flow needs replaced.you can try cleaning it with some mass air flow cleaner if you cant find that at your auto parts store get some electrical parts wash. your idle air valve needs to be cleaned or replaced there hard to get off. your throttle position sensor , you need to know the setting ,if the auto parts store cant give you aprint out of instuctions best to let a kia dealership do it and pay out the ****.

Posted on Aug 08, 2010

  • lizbiz_97756 Jul 02, 2011

    Where is the air flow sensor located?

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1 Answer

2001 kia optima v6 with fault codes p0720, u3600, and p1529 what do they mean?


I just know P0720 and P1529, the P0720 means "Output Speed Sensor Circuit" and the P1529 mean SCAIR Sloenoid Circuit Malfunction.

The Maxivideo MV301 tool 8.5MM is a new release code scanner.

Aug 06, 2012 | 2001 Kia Optima

1 Answer

Kia optima hesitant acceleration


could be spark plugs, dirty fuel filter, air filter, Mass Air Flow Sensor. bad spark plug wires. Dirty throttle body or injectors. I would start with the cheapest and work my way to the more expensive things if it doesn't improve.

Jul 23, 2012 | 2003 Kia Optima

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MY CAR IS SKIPPING AHD HESITATING WHEN I TAKE OFF FROM A DEAD STOP OR AND A SLOW DOWN. ALSO, WHILE I'M DRIVING IT SKIPS AND PRESSING THE ACCELERATOR DOWN DOESN'T SPEED UP THE CAR BUT THE RPMS ARE REVING. ...


i had this similar problem on my kia optima. Does it hesitate when it switches gears when accelerating if so. The problem is the fuel pump. i had to replace mine and that solved my problem.

Feb 07, 2011 | 2004 Kia Optima

1 Answer

I don't know where to put in the coolant in my 2001 Kia Optima. Is there a diagram that I can access? I bought the car used, and it didn't come with a manual. I feel really stupid for asking, but I...


There are 2 ways to add coolant, 1) the overflow tank (resembles windshield washer tank) it's plastic and has a line that connects to the neck of the radiator. 2) With the car cold, you can open the radiator cap and add coolant. IMPORTANT: Never open a radiator cap when the car is warm.
On the overflow tank, there are 2 FILL LINES, 1 for when the engine is cold and another when it's warm. If adding directly to the radiator, fill until the level approaches the neck of the radiator.

Nov 23, 2010 | 2001 Kia Optima

1 Answer

Our 2001 Kia Optima, automatic 2.4L at 155k miles has very poor acceleration, tranny slips, sometimes sticks at 3k rpm at 55-65mph, we need to stop, shut off car, restart to reset. Must warm up car to...


This is not what you want to hear, but its time to replace or rebuild the transmission. The clutch packs are worn causing your slipping concern. and your fluid is probably contaminated with the clutch material which can cause hydraulic circuit failure.

Mar 11, 2010 | 2001 Kia Optima

1 Answer

Check engine light 04 kia optima has 2 codes egr flow insufficant and catalist below warm


2004 kia optima - check engine light just came on. 87500 miles.... what could be the issues

Dec 29, 2009 | 2004 Kia Optima

1 Answer

2001 kia optima acceleration drop out problem i replaced the oxigen sensor allready n still the same problem need help


Hi , o2 sensor problems usually comes on on the open road while you try to maintain the same speed.
Acceleration problem check usually start with: airfilter , fuelfilter , sparkplugs , fuelpump . Hope that helps.

Jul 07, 2009 | 2001 Kia Optima

1 Answer

Hesitation while accelerating


air leak at air duct to throttle body.

Jun 12, 2009 | 2001 Kia Spectra

1 Answer

My car is reving and hesitating to catch the next gear what could it be?


what do you mean? when you drive normal does it change or only wen you accelerate hard?

Jul 19, 2008 | 2001 Kia Optima

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