Question about 2001 Hyundai Elantra

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Engine light stays on and idle fast on start up

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Take it to your local Auto Zone, Advance, or other parts store and see if they'll read the code. That's an OBDII system so modern code readers can handle it. At least then you'll have some idea what the prob is.

Posted on Sep 24, 2009

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1 Answer

Fast idle when starting cold engine


Should idle fast when cold for around 60 seconds. Does it stay idling high ?

Oct 19, 2015 | Cars & Trucks

1 Answer

Motor is running fast when i start it chock seems to stay closed engin light is on


A 2000 Isuzu would have fuel injection not a carb, so no choke is used.
You would need to get the computer checked for trouble codes, I would suspect a huge vac leak is the cause of the fast idle.

Jan 31, 2014 | 2000 Isuzu Rodeo

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I have a 1986 GMC 1500 with a 5.0 and stock rochester carb. The truck will start but you must keep gassing it as it won't idle. It kicks off every time. Any suggestions on how to fix this cold natured


fast idle speed screw, works off the fast idle cam which the choke adjustment sets, it works together by linkages. This is the raised idle speed setting you need to keep a cold engine running. First you set the idle speed by the idle speed screw with engine at normal operating temperature. Then you set the linkage up so the cam is on a raised step, throttle will be held on that raised step. then you can turn the idle speed screw to get idle at about 1500-1800 rpm. Now when you start engine cold, choke will set the fast idle cam on that raised step- when engine starts and runs it should be running at your fast idle setting. That's how it supposed to work, you just have to get everything adjusted right. I hate carburetors, they never stay adjusted right. Considering their complexity and small mechanical parts, no wonder.

Dec 24, 2013 | 1986 GMC C1500

1 Answer

Fast idle


Sounds like your throttle position sensor is bad.
Take it to Auto Zone and ask them to pull any computer codees that may be latched. Not sll codes trigger the check engine light

Apr 04, 2010 | 1999 Buick Century

1 Answer

Driver seat belt worn half way thru .engine just started to idle high. door lights stay on,it is a 1992 4 dr hatch back w/70000 mi


I'm sorry, what is your question?

Your seat belt can be replaced - the seat belt has nothing to do with the engine idle, or the door light. The light stays on because the door switch needs adjustment or replaced or perhaps it has beenturned on by the light interior light switch that controls the dash board lights.

70,000 is not a lot of miles.

I suggest you have your vehicle tuned up aat a garage to fix the high idle and assure economical operation. That same mechanic may be able to advise you on the light and how to replace the seat belt. Your car may be running fast because of the cold weather to warm itself up. I dont know where you live.

Mar 09, 2010 | 1992 Geo Metro

1 Answer

1992 ford f150 xlt- when first started idle jumps from very low to very high repeatedly until warm. then idle is high


try un-plugging the IAC motor,then start it,if it idles low and stays there then replace the IAC motor----if no change then you may have a knock in the engine and the knock sensor is telling the computer to change the timing to compensate for spark knock due to low grade fuel,so it advances the timing back and forth due to too high of rpm then too low and the computer doesnt know how to smoothen it out that fast,but eventually does.The check engine light would usually come on in this case

Jan 23, 2010 | Ford F-150 Cars & Trucks

1 Answer

Check Engine light stays on /engine idles to fast


YOU MUST GET THE COMPUTER CODES FIRST TO SEE WHAT THE AREA TOO LOOK FOR COULD BE SIMPLE LIKE A VACUME HOSE/ INTAKE LEAK/ BAD MASS AIR METER . LOTS OF STUFF GO TO PARTS HOUSE MOST OF THEM OFFER FREE SCANS THEN REPOST YOUR CODES THEN WE CAN HELP

Aug 24, 2009 | 1999 Dodge Durango

1 Answer

87 Ford F150 idles too fast


either a vacuum leak or an idle air control valve problem most likely.the iac is on the side of the throttle body.cylinder shaped with a small harness.

Jun 11, 2009 | 1987 Ford Ranger

2 Answers

High fast idle at start up.


On most newer cars there is a fast idle motor controlled by the computer that will hold the fast idle till the engine reaches a preset temp in the computer then the engine should drop down to the set idle according to specs for that car. If the oil pressure continues to stay low after the idle goes down you may need to replace the oil pressure sending unit or if worse case the oil pump.

Nov 18, 2008 | 2003 Hyundai Tiburon

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1999 Ford Escort idle problems


PVC valve is not metering air correctly, it will appear ok shaking it but looses it ability to maintain proper position causing a medium to gross vacuum leak.

Sep 12, 2008 | 1998 Ford Escort

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