Question about 2002 Toyota Celica

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Bad miss i have an 02 celica gt it has a bad miss at low rpm. you can unplug the number 2 injector and it doesnt make a difference either way and its gasing the number 2 plug out u you can take the efi fuse out and the check engine light goes off i cannot figure out whats going on can you help before i burn it down lol

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If you unplug the #2 cylinder and there is no change that means that you have no fire on that cylinderyou most likely have either a bad wire bad coil pack/distributer.if neither is bad then it's a computer problem and that will need to be replaced. you can get a replacement computer from a salvage yard for alot less than trough a dealer. hope this helps please rate this solution thank you.

Posted on Aug 29, 2008


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On 98 Dodge 5.9 1500 I have developed vibration between 1100 - 1400 RPM. In gear driving or sitting and running up to RPM. Very noticeable. Seems to go away below and above RPM.

Have your local auto parts store do a OBD scan to see if any codes are reported.. You are looking for a miss fire cylinder. Check the electrical system first particularly a bad distributor cap allowing a spark to jump .

It is possible a fuel injector is not opening. Check continuity at each injector With a stethoscope listen for a distinct click at each injector and confirm injector activation.

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.Hope this helps?

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You have a miss in the number 1 cylinder during the first 300 revolutions and then during the next 1000 rpm it is still missing. Depending on the engine type you can have a bad plug, plug wire, or coil if it has a coil on each plug. You can also check for the injector ground wire and connector for #1 plug.

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If it improves with rpm, I would suspect a stuck injector (not closing) causing your engine to run rich, or a bad temperature sending unit. You should check for fault codes (they will do this for free at Autozone). You will most likely have a code for a bad oxygen sensor. Don't replace it until you correct the rich fuel mixture with the bad one unplugged. The rich mixture is the cause of the bad O2 sensor, not the symptom.
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My 99 dodge ram 1500 sport 4x4 5 speed manual tranny started missing real bad,one day while i was going down the highway.So bad that you can hear it in the exhaust and it's a constant miss.I was in 5th...

you did not state whether or not you have a check enging lite on, if you do not have a check engine lite on then it is not a sensor related issue, if you hearing a miss from your exhaust at high rpm you may have encountered a broken exhaust valve spring in a single cylinder causing the misfire at high rpm, sometimes they break bad enough to drop the valve then there is no guess work, but sometimes they just crack or become weak and do not seal off compression like they are supposed to do. I would suggest you preform a cylinder compression test to check the internal condition of the engine , do a wet and dry test compare the numbers, if all cyls raise on wet test then okay if you don't have a substancially low cyl from the others during the dry test, now if you have low cyl that does not raise with oil during the wet test you have a mechanical issue hard part failure... hope this helps... check all this after you have eliminated any electrical issues...

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sounds like a vacuum leak, injectors clogged, bad plugs, plug wires or maybe low tranny fluid or combo one all, have it dynoed to save yourself some money of course.

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Bad acceleration

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