Question about Hyundai Motor 1996 Elantra

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When revv it flactuates between 2000 revvs and1500 revss and affects when drivin causing stallin like lack of fuel.

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Take/Tow your vehicle to an authorized Hyundai dealership and pay the diagnostic fee... they will tell you exactly what the problem is and the cost of parts/labor to fix it... at least this way you'll know what the problem is and what's required to fix it.

Posted on Oct 18, 2009


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Posted on Jan 02, 2017


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My 2004 chevy Colorado starts but then dies or you keep it revved up a little it stays running. The code says it has a faulty temp sending unit could that make it do what its doing

Yes. Very much so. A faulty temp sending unit will cause the PCM to give incorrect fuel information to the fuel injectors. They are designed to fail with a low temp reading. This will cause too much fuel to go to the injectors and what you are experiencing is the engine flooding out. By revving the engine you are burning off the excess fuel and giving that fuel more air. You need to replace the sensor because running the engine long term that way will damage the O2 sensor(s) and possibly the catalytic converters, not to mention you will get less than half the normal fuel mileage.

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Signs of a clogged fuel filter

Usually a clogged fuel filter will prevent the engine from revving over a certain RPM, say 1500 or 2000. A weak fuel pump or pump relay could cause it to stop running and then restart.
But the fuel system would not affect engine compression.

Jul 28, 2014 | 2000 Honda Civic

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2000 mercury cougar is revving rmp when in park

It sounds like a malfunctioning throttle sensor.

Jan 28, 2014 | 2000 Mercury Cougar

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Over revving

Check for a vacuum leak. This can cause a higher than normal idle. It can also cause a surge since the idle air control tries to adjust the amount of air required to idle.

Oct 26, 2013 | Volkswagen Cars & Trucks

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While driving home, my elantra rpm revved from 2000 to 3000 then dropped back down, then dropped to under 2000. slight lurching forward while driving like rocking on a carosel. sounded like it was choking,...

While there are a number of things that can cause those symtoms, one of the most common causes is the MAF, ( mass airflow ), sensor.
This can cause erratic changes in the management of fuel/air mix ratio, as well as mis management of proper fuel to the fuel injectors.

I hope this helps you.

Jan 31, 2011 | 2004 Hyundai Elantra

1 Answer

The check engines light came on and i can't find anything wrong & the motor rpm is high them it high

O2 sensor may be dirty from not running premium gas. Check your exhaust for smoke when revving the engine. This will indicate a fuel air mixture that is too rich, usually caused by a sooty O2 sensor.

Sep 27, 2010 | 2000 Isuzu Rodeo

1 Answer

Hard shifting, revving of the engine, trouble

Your going to need a scanner hooked up to look at data. There is no other way without guessing.

Nov 20, 2009 | 2000 Ford Focus

1 Answer

2001 Ford F-150 Revving at idle.

Notorious for vacuum leaks from failed hoses/tubing/conectors.Some of these are very hard to see/access.Check for this and be sure fuel filter is fresh. Look at fuel pressure. Check MAF sensor for dirt that has bypassed air filter. Good luck! Rate me please.

Feb 19, 2009 | 2005 Ford F-150

1 Answer



Based on your description "hard line from thermastat area has a heat wraparound it goes towards firewall", that would appear to be part of the heater system for the inside of the vehicle and would not affect the overheating of the engine.

Most engine overheating could be caused by:
  • insufficient coolant in the radiator or reservoir;
  • defective (stuck) thermostat;
  • too soft radiator hoses (upper/lower);
  • water pump, belt, tensioner;
  • clogged radiator;
  • radiator fan motor, clutch (if has got one), relay.
Additionally, in a large number of vehicles, the radiator fan motor would only work the A/C or heater is ON.

Corrective action would require determining which is the culprit, pls try:
  • remove the thermostat completely out and test drive, see if the overheating comes back, if yes, then it is not the thermostat, if no then the thermostat most likely is stuck closed and would need replacement;
  • on start from a cold engine, remove the radiator cap and pls check if the water flows when the engine is revved. If yes, water pump is working, if not, water pump is defective;
  • in a closed loop cooling system such as in your car, there is a possibility that the radiator hoses might have thinned down or gotten softer. This could be checked by revving the engine while looking over the hoses, there should be apparent sagging or reduction in diameter when the engine is revved. If any, then they are too soft and would need replacement;
  • clogged radiators could be flushed/cleaned by removing the drain plug at the bottom.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Aug 08, 2008 | 2000 Chevrolet Silverado 1500

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