Question about 1987 Toyota Supra
Engine sounds it has missfire. I just installed a new spark plug about 3 weeks ago. Upper radiator hose was damage a few days back but it did not overheat I replace the hose right away. It works fine for a few days Until I got this problem. Idle is unstable.
This sounds like something i have learned from experience. Always look at the last thing you did;it is often the problem. Did you check the obvious...wires,cap,proper location of wires..Hope this helps-just sounded familiar
Posted on Jan 20, 2009
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Posted on Jan 02, 2017
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Cylinder #3 Misfire Detected
What does that mean?
A P0303 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #3.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Symptoms Symptoms may include:
A code P0303 may mean that one or more of the following has happened:
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as 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 wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
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