TOYOTA CELICA 2003 CYLINDER 3 MISFIRING IDLE ROUGH WHEN ENGINE IS COLD AND THERE IS HESITATION AT LOW SPEEDS 1ST TO 2ND GEAR ONCE THE ENGIE HAS WARMED UP THE HESITATION STOPS AND IDLE RUNS SMOOTH AT 750RPM
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Not having an IAC would only affect idle speed. A rough idle could be a weak coil, or injector among other things. It takes more spark and fuel to fire a cylinder when the engine is cold.
Are you getting a trouble code for any one cylinder ?
The error code 302, means misfiring at cylinder 2 while
code316 means misfiring detected in first 1000 revolutions. The reason for
misfiring may be faulty spark plug, faulty plug ground connection or can be
damaged wires.
Sounds like you have a major misfire problem. The light is flashing because the ecm has determined that the problem is severe enough to cause damage to something. If your engine light flashes it is a warning not to drive the vehicle. I'm assuming this is a four cylinder. My guess would be that only two of the cylinders are actually producing any power. I would need the following details to help you further. How many miles are on this engine? Has the necessary factory maintenance schedule been maintained? In other words have the appropriate parts been changed and serviced to keep this engine performing properly. Many things could be causing your issues. Do the necessary maintenance first, like spark plugs and whatever the manufacturer requires and see what happens. If this does not help I can help you with the rest.
The spark plug leads in these cars are notoriously bad. I would change them without hesitation just for maintenance if nothing else, but I bet it solves your problem.
Well the misfire in Cylinder 3 will commonly be that your plug has gone bad. If that is the only code that it is throwing out then it could be an array of things going on. It sounds though that you may have a throttle position sensor out or that you have your idle speed set too low. You will still have great response when gas is applied but sitting at lights the idle will be rough and sometimes bounce up and down.
×