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Toyota corolla check engine light

I have a 2000 toyota corolla with 288K on it and its check engine light is flashing .. it misfires and runs like **** at 40-55 mph. I replaced two of the coil over boots on it and now it upon accelaration has dead misses like i have bad gas or ?? help thanks Karen

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  • Cars & Trucks Master
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The coil itself may be dead.

Posted on Feb 17, 2014

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  • Cars & Trucks Master
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The light is flashing to alert the driver that the problem is serious enough to damage the catalytic converter.
Get the engine computer scanned for trouble codes so you know how to proceed with testing.

Posted on Feb 17, 2014

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Posted on Jan 02, 2017

j_del
  • 1586 Answers

SOURCE: 2000 VW Jetta VR6 My

You may have a bad coil pack - try moving two of them around and see if the misfire follows the coil pack or stays at the same cylinder. If it follows the coil pack, get a new one. If it stays in the same cylinder, inspect your spark plug wires and make sure the plug is gapped correctly.

Posted on Aug 09, 2008

  • 1 Answer

SOURCE: Check Engine Light is on and the code is P0303

Hello I need a help.
I have 1999 lincoln town car 4.6L V8.They have check engine light on. P 0303 cylinder 3 missfire.
I was changed spark plugs,fuel filter. check compression test 150psi. fuel pressuer 50.
swiching cylinder 1 to 3 fuel injector and coil. but they still have engine code

Posted on Apr 12, 2009

Molson02536
  • 3854 Answers

SOURCE: Check engine light

A multi misfire may mean that one or more of the following has happened:
Faulty spark plug or wires, Faulty coil (pack), Faulty oxygen sensor(s), Faulty fuel injector(s), Stuck/blocked EGR valve / passages, Faulty camshaft position sensor, Defective computer.

The engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wire, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the the problems were faulty fuel injectors. 

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

Good luck and hope this information helps, keep me posted, be glad to help you get the truck running 100% again. Not sure if your running a K&N air filter, and if you are there may be a flim of oil on the MAF sensor that is making you run lean. You may want to spray down the MAF sensor with a can of MAF cleaner. 

Posted on Jul 02, 2009

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SOURCE: 2005 Jimmy 4X4, 4.3L, P300 multiple misfire. Have

Try some injector cleaner in the fuel--there might be some water in the fuel also. Check the air cleaner.

Posted on Aug 01, 2009

iambanshee74
  • 3489 Answers

SOURCE: 2007 aveo misfire faults

gm has a problem with this from way back. double check your spark plugs and if they are not ac delcos, change them. ive seen this time and time again swearing, myself, that there is no way that the plugs would cause this issue. it always comes up with random misfire and usually another 1 or 2 codes misfire codes. put in ac delco, no more codes. let me know

Posted on Feb 22, 2010

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