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2004 Kia rio. Takes a long time to turn over. Jumpy when driving, sometimes runs rough when idling. Check engine light is now on... What could be wrong?

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  • Cars & Trucks Master
  • 22,156 Answers

16v engine ? anything and everything could be wrong firstly check the plug gaps 25th ,then see how it starts and runs ,then failing which check any vacumn pipes for fracture and perished ends .Then start the big things like fuel pressure and sensors as it could be cumulation of different things like the plugs causing the starting problems and the O2 sensors causing the rough idle .Sorry no quick solution here but a process of elimination using a bit of knowledge and a multimeter to test the sensors

Posted on Dec 31, 2012

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Posted on Jan 02, 2017

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SOURCE: Check engine light is on in 2004 Lincoln aviator

Go to Wal-Mart or Auotparts store and buy SEAFOAM. This will clean & clear the crud off of your O2-sensor. This should strighten your problem.

Posted on Jan 31, 2009

  • 2 Answers

SOURCE: Very Rough Idle and sometimes cuts off while idling




sounds like bad Idle Air control valve Not Cheap


wl2ac485003.jpg

Posted on Feb 21, 2009

landsend
  • 1066 Answers

SOURCE: 2002 Kia Rio runs rough when idling

well spend some change and have a simple tune-up.  Plugs and filters and readjust the idle.

Posted on Apr 01, 2009

motor1258
  • 6674 Answers

SOURCE: 2004 subaru forester, 99,000 miles. Check engine

Drop in to an Autozone, or Pep Boys, or similar big parts store & they will usually scan for codes free. This will hopefully eliminate all the guess work, or at least point everyone in right direction for better diagnosis. If not obvious from codes what the problem is, get back to us and we'll help you out.

Posted on Aug 23, 2009

Testimonial: "Thanks for the great suggestion . I'll have Autozone read the codes on Monday. Thanks again!"

ZJLimited
  • 17970 Answers

SOURCE: P1166 code displayed on 04 KIA RIO with 1.6 eng.

P1166 refer to O2 sensor heater circuits malfunction, HO2 Heater system electrical, bank 1.


Posted on Jun 30, 2010

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1 Answer

2005 kia Rio Cinco. Runs really rough when starting it up; running ok when gas pedal is depressed. At idle speed it is bogging out almost stalling???


what is the idle speed? 750 rpm in drive or 800 in neutral?
check that
check for loose or damaged vacuum hoses, and air filter box leaks

Aug 07, 2014 | 2005 Kia Rio Cinco

1 Answer

I have a Kia Rio 2005 Cinco( 5 door) Running really rough until I push down gas pedal,,, Then it seems lOk still a little r bogged down', It doesn't stall just runs rough without accelerration? Oxyg


To begin with, is your "check engine (CE)" light on? If it was on and now its not, you need to replace the bulb. If CE lights is on, find out the codes before doing anything. If bulb is good and "CE" does not come on, begin with: (1) gapping spark plugs, (2) replace spark plug wires (if haven't changed them within the last 2), then the coil. If your Cinco is still idles rough, adjust gas pedal until idling smoothly. If this still doesn't help, replace your two oxygen sensors. If still running rough, the converter. After doing all this and problem is still present, take it to a mechanic you trust.

Aug 07, 2014 | 2005 Kia Rio Cinco

1 Answer

My Chevy 2500, 2001 runs rough when it cold outside


It can be issue with low fuel pressure,the fuel pump is getting old both needs to be checked.Also get the IAC valve checked.
Go through the related help links with similar problem,it may help:---
Click the links below:---
Engine Idles Rough and Dies? http://whatisbyme.blogspot.in/2012/05/1994-lexus-es300-engine-idles-rough-and.html

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van idles rough? http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html

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runs lean and idles rough? http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html

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Car still runs Rough after tune up?

http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html

-----`-
2006 kia rio runs rough http://technoanswers.blogspot.com/2012/10/2006-kia-rio-runs-rough.html

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Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

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Rough idle, staling and Erratic shifting? http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html

---------
These details will help.
Thanks.

Nov 06, 2012 | Cars & Trucks

1 Answer

Kia Rio cutting off


im assuming that changed the oil unit you mean sending unit ? if so could be electric short in the pick tail or worse wiring harness. second there is also possoble vacum leak .third while unit was being replaced something didnt get put back or got knocked loose. created a new problem. most times as thing are going bad they dont register until it is a prolonged problem as it took 2 days for the check engine to go out that also might have been normal. you might also notice while sitting at park when you turn the wheel you will notice ia differance in the idle, if its almost stalling then its probley your idle,needs re set, or your idle controle valve is going bad ,did it get checked or cleaned when they serviced the throttle body. and also could be your mass air flow sensor going bad or need cleaned

Jul 08, 2010 | 2003 Kia Rio

1 Answer

Engine stall


Fuel fiter or spark plugs?

Aug 12, 2009 | 2004 Kia Rio

2 Answers

2002 kia rio stalls when coming to a stop if the gas is not applied


My personnel fix for this.

Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Apr 13, 2009 | 2002 Kia Rio

2 Answers

2002 Kia Rio runs rough when idling


well spend some change and have a simple tune-up.  Plugs and filters and readjust the idle.

Mar 14, 2009 | 2002 Kia Rio

1 Answer

At times car can not run over 53mph.


u need a special test gauge, it hooks to a test port on the supply pipe to the engine fuel injectors's, looks like a metal tire valve, u may be able to borrow this fuel pressure test guage from Kragen or Autozone, call them and check.

Jan 29, 2009 | 2002 Kia Rio

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