Question about 2000 Toyota Celica
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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Posted on Jan 02, 2017
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
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
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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