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THIS VEHICLE EXCELERATES AND DECELERATES IN THE ...
2002 Hyundai Elantra
This vehicle excelerates and decelerates in the park (idle) position. What is the problem? Thanks.
Thursday, October 25th, 2012 AT 3:24 PM
A fault with the idle control system would result in surging rpms while idling. It could be leaking vacuums, a faulty IAC, lack of coolant, clogged coolant to IAC.
If the Malfunction Indicator Light is showing, retrieve the trouble codes and let us know what it is.
Thursday, October 25th, 2012 AT 3:54 PM
to post a reply.
Idle Surge,very High Idle
01 hyundai elantra. Replaced bad alternator, now it surges at idle until computer sets, then it revs to 4000 rpm. Code p0121, replaced tps.
Idle is surging up and down as if some was depressing the gas peddle and letting back off. Originally my idle raced to 3000 rpms and s
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