Question about 2000 Toyota Celica

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When my car warms up it starts to bog down but when its cold it runs fine

Sometimes it idles fine but sometimes it don't, but anytime i go to take of it bogs down almost killing the motor then jumps up to speed

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1990 toyota camry 4afe engine

First I suggest a full tune up, including air and fuel filters. If you have already taken care of this, then you maybe overloading or flooding your engine with fuel. If the problem seems worse when you first start the car in the morning and gets slightly better as it warms up then you may have a bad coolant temperature sensor. This is about a $30 part. This sensor adjusts the amount of fuel pumped through your injectors to make up for cold temps much like choking an older vehicle. If it goes out, it sends the ECM a signal that the temp is negative 27 f and so it dumps all the fuel it can on the fire to compensate. A good indicator of this would be poor fuel milage, with this car you should be getting between 27 and 32 mpg. Most mechanics charge about 60 to 90 bucks to change this part.

Posted on Aug 26, 2008

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SOURCE: no power

hi change the basics first plugs leads cap rotors etc sounds more like a missfire than fuel yates210456

Posted on Oct 26, 2008

  • 49 Answers

SOURCE: 1994 toyota pickup idling problems

Could be a throttle position sensor going bad or a loose or leaking vacumm line or loose or worn wiring harness. You had mentioned the engine starts heating up. Do you mean overheating or operating above normal temperature? Sounds like a vacumm issue with the fluctuating idle. Check for worn vacumm lines and check to see if the vacumm is functioning. Sometimes a simple vacumm line with a loose connection or a small hole in it can affect your idle. Old lines are easily replaceable and an inexpensive place to start, then try your egr valve, pcv valve, brake booster vacumm line, oxygen sensor could be worn and affecting the mapping of fuel and air on the computer. Usually the check engine light will come on in this case.

Posted on Apr 18, 2009

  • 89 Answers

SOURCE: Idle surges when it warms up.

sounds like an engine management fault it will need to go on a computer

Posted on Jul 11, 2009

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SOURCE: car idles and runs rough intermittently after engne is warm.

one of you air line pipes could have collapsed or split which will cause a problem with idling and performance and it will give no smoke signs

Posted on Feb 13, 2010

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Chevy Malibu Cold Idle Problem


Check the water coolant thermostat. If it is stuck in the "open" position you are heating up all the water in the coolant system and this will take time. The thermostat keeps the water in the engine until warmed up to almost normal running temperature, only then does it allow the coolant to enter the radiator.

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Trace your vacuum hoses and while engine is cold,spray a mist of carb cleaner on connections(with engine cold,yet running before warm-up).If engine idle changes up or down,THERE'S your leaky hose.It might also be another component,but you would get a code.The dealer can sometimes get a more specific code reading and find the problem.don-ohio

Oct 01, 2011 | 2000 Dodge Durango

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When i start my jeep in the cold mornings it starts up but bogs right down and stalls then i have to accelerate for the second start up for a few minutes to warm it up a little and then it bogs and stays...


Your only problem friend, is the temperature sending unit/sensor. Upon cold start, this sensor wil tell the computer to go into cold start mode putting a bit more fuel in and raising the idle a bit to keep it running when cold without using the throttle. Replace that sensor and your good to go. Makes sense, right?

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im assuming youve done basic tune up of plugs, wires, air and fuel filters, oil, distributor if applicable (im guessing not but never owned a dodge)

if it bogs down/stalls at stops only when its hot, try a new egr valve. probably getting stuck open. if not that try heavier oil to see if its losing compression, just one step up. also,

if it runs ok after clearing the computer by disconnecting the battery for a while, probably a dying sensor (most likely o2)

if after clearing computer it still runs bad after warm up, see if it bogs down really bad when letting it warm up from cold without driving (just idle to make sure its not egr system). if it dies or sounds like its close to dead, then its probably something fuel related (clogged/faulty injector, worn fuel pump, bad pump relay)

hope it helps

Jul 28, 2009 | 1992 Honda Accord

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