Question about 2001 Hyundai Sonata

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Yesterday, my 2001 sonata jerked and the check engine light came on. What could be the problem?

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I hope I can help solve this as my wife's car just did this, and I need to find out why. I put her car on my OBD program and found it to be a PO 720 code. The tranny slips then the check engine light comes on. I'll try to get more specific as I find out more details. I think it's a tranny problem causing the sensor to trigger and not the other way around.

Posted on Nov 16, 2009

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You need a code scanner hooked up to find out why the light is on, some sensor on the engine went. If there is an advanced auto or an autozone near you, take it there, they can hook one up for you free, that will tell you what is wrong. Takes about a minute to do. Some places charge almost a $100.00 to do. Without that hooked up, you won't know what sensor it is.

Posted on Nov 16, 2009

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Posted on Jan 02, 2017

czaa
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SOURCE: 2001 Hyundai Sonata giving Jerks

im lookin forward to jerkin we i approach old age too-about time for a mech chec up huh-the engine lite probly indicates for new O2 sensors or the transmission sensors-$$$-hav car scanned for free at ur friendly discount place-befor u run the marathon

Posted on Aug 16, 2009

MNfisherman
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SOURCE: check engine warning light is on 2001 hyundai sonata

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

ghost45
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SOURCE: s.govI just got a new

When a 'check engine light' (MIL=Malfunction Indicator Lamp) is turned on, there is a DTC (Diagnostic Trouble Code) set/stored in the ECM/PCM (Engine Control Module/Powertrain Control Module). This code identifies which engine management system component/function experienced a malfunction. Once you pull/read this code, you may begin diagnosis. I think you'll find P1529 (MIL On request from the TCM - Transmission Control Module.

Posted on Sep 13, 2011

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im lookin forward to jerkin we i approach old age too-about time for a mech chec up huh-the engine lite probly indicates for new O2 sensors or the transmission sensors-$$$-hav car scanned for free at ur friendly discount place-befor u run the marathon

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