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Hi I have a 1995 Hyundai Sonata now officially runs like a pig has a little tick to the engine and won't run when idle any help appreciated cheers

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Connect a vacuum gauge to the engine. Sparatic movement would indicate a valve problem in most cases. A major vacuum leak will cause stalling, or no idle, back vacuum line is broken or loose, brake booster is bad, bad intake gasket, cracked intake, or head, bad gasket under the Throttle body, Listen under the hood when it is running an listen for hissing,
A bad engine sensor, MAF sensor, bad plug wires (look for sparking in the dark), bad computer, many things, wrong gas, bad throttle sensor, failed coil or coils,
Best to use the engine codes to identify, if no codes, check the first items.

Posted on May 03, 2017

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Posted on Jan 02, 2017

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sleepygsx
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SOURCE: 2001 hyundai sonata 2.4 dohc, cylinder 3 misfire code

tried testing the igniter also i would look into the injector, that will cause a single cylinder misfire and probably is your problem?misfires are not noticeable at higher speeds, which im sure you know but i would go that route, could have a pinched injector or a stuck one. one easy way to test is swap 3rd injector with another and see if that one starts misfiring instead, another rought is to get a cheap auto stethoscope and put it to each injector to hear if its opening and closing, compare with others. good luck.

Posted on Dec 11, 2008

csmock132
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SOURCE: 2000 Hyundai Sonata jerking and causing poor performance

The turbine shaft speed sensor can cause this problem, It is also know as the transmission input shaft speed sensor. It will cause the transmission to **** and also stick in 3rd gear, which wound cause slow acceleration.

Posted on May 18, 2009

  • 750 Answers

SOURCE: Rough idle engine ticking

check for a lose spark plug lead or cracked elecrod insulation on spark plug

Posted on Jul 09, 2009

  • 2 Answers

SOURCE: how do you reset the check engine light on hyundai sonata?

Just disconnect your battery for a couple of minutes.

Posted on Jul 20, 2009

  • 1 Answer

SOURCE: 2002 hyundai santa fe - engine noise ticking

The cam chains have developed slack and are slapping on the cam chain guides which helps prevent the cam chains from popping off in case of slack developing . The chain guides are made of some type of plastic material and develop significant wear.

Posted on Feb 26, 2010

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Hi Warren, I had a 1995 Elantra and they were very good at reusing their tehnology on all their models. What engine size are you talking about here. Mine was 1600 GLS but there was a 1800 GLS as well. On the Sonata some had bigger engines which may have required stronger starter motors, so please check first.

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I suggest taking it back to the dealer under warranty. I think Hyundai is 10yr./100k for the original owner. 5yr./50k if not. Ask first if covered, and ask why not id not covered.

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Sounds like you have a plugged up catalytic converter. You cant clean them it will need replaced. If it is the 4cyl engine, the converter is the exhaust manifold on the front of the engine.

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1995 hyundai sonata turns over but will not start


sounds like a crank position sensor. Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDI/II (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Once you do this and let us know what, if any codes are set, then we can go from there.

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1996 hyundai sonata gl.monitors wont reset.wont pass smog test.check engine light is off,and car runs great.


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