Having hyundai Elantra 2004 crdi model,i m facing trouble with RMP its not reaching more than 3000, when i start the engine and accelerate the very frist time it will go up to 5000 and when i again step on the gas second time it will only reach up to 3000 rpm, on highways it will run up-to 110 speed not more than that its max speed is 190, TCS and ABS was fine, i have recently changed engine oil every thing is perfect about this car only RPM issue is killing me... any suggestions...
It almost sounds as if the rev limiter is kicking in.
SOURCE: rpm fluctuations
either you need a new tranny or your ecu is reading a code. Same thing happened to mine, i had my transmission replaced.
SOURCE: My 2002 Hyundai Elantra Gt (2.0L)engine runs rough
The Hyundai online shop manual and my newly arrived Hyundai shop manual kept pointing to the coil as a possible problem. While preparing to check coil continuity I discovered the pigtail connected to the bottom of one of the coils was loose and the contacts were burned. This is the coil that supplies spark to plugs 1 & 4, the same ones that kept showing up each time the check engine light illuminated. After cleaning the contacts and making sure the pigtail was securely attached to the base of the coil I have had no further problems.
SOURCE: Hyundai Sonata 2002 idle at high RPM and accelerate 40-45 MPH
Look for a vacuum leak somewhere. This is the most common problem for a high idle.
SOURCE: 1998 Hyundai Elantra, Code P1127
dear friend-plse look at the following:feul pressure,feul system,mechanical fault, ecm.these are all related to your problem.
SOURCE: High rev when starting hyundai atos
Check the vacuum hoses, but sounds like the IAC or even the o2 sensors. The computer will pick up on the o2 sensors but not the IAC..Go to your local ADVANCE store and they will check on computer for free :)
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