Question about 2001 Hyundai Sonata
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Posted on Jan 02, 2017
THERE IS A TEMPERATURE SENSOR ON MOTOR WHICH CAUSES THIS PROBLEM... USUALLY IT SHOWS A NEGATIVE TEMP READING WHICH CONFUSES THE COMPUTER CAUSING IT TO REV UP....HAVE THE ENGINE DIAGNOSED ON A SCANNER....GOOD LUCK...
Posted on May 25, 2009
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 :)
Posted on Jul 26, 2009
Could be misfire. You need to get a code reader to find out what the trouble codes are. You can then better know what to do next. Spark plugs could be the problem. They are easy to change on the four cylinder, and the V6 is a bit of a chore as the intake plenum needs to be unbolted to change the three rear plugs. Get the codes read! best of luck!
Posted on Jan 30, 2010
Purge Control Valve Problem
The "Purge Control Solenoid Valve" is the "Purge Control Valve".
Rough idle is a typical symptom of something amiss with the purge control portion of the evaporative emissions system. It could be the valve itself is not operating correctly, the evap canister (vapor canister) may be leaking, or full of raw gas instead of vapor, or maybe even the purge control valve is getting a faulty signal from the ECU.
The soleniod is checked by applying a voltage to it and checking to see if it closes, or opens (I'm not sure if its un-energized state is normally open, or normally closed). If the valve is bad it is a no-brainer to replace.
The vapor canister can be removed and checked to see if it is full of raw gas (not supposed to be), but checking it for leaks is a bit involved, and probably requires equipmet not normally owned by a home mechanic. Vapor canister failure on cars with a lot of miles is common. Replacement is the fix.
Of course if the ECU is not sending a purge signal to the valve correctly, figuring out why may proove difficult, and possibilities could even include a faulty ECU. I expect this is unlikely though.
It's a $20 part. I first would change pcv valve because it can give same error if it's plugged up. You can always remove it and shake it. It should rattle around real easy. If not, it should be repalced
Posted on Apr 17, 2010
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