Question about 2000 Jaguar S-Type

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2000 Jag Misfire 4.0

I just bought a 2000 Jag S-type with the 4.0 engine. It was misfiring really bad, code was P0304, replaced #4 coil and plug. The engine is still misfiring but not as bad as before and it is not throwing any codes? I also ran 3 tanks of premium with one tank of injector cleaner.

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  • clmserra Jan 16, 2009

    UPDATE, I changed all eight coils and plugs. Car is running great, for now I suppose.

    Thanks for the help.

  • Anonymous Mar 27, 2014

    Hi...I have a jag 2003 S type. Battery has been discconnected and now the radio is diplaying CODE. I have the 4 digit radio code and after I input all 4 digits, the display shows CODE again. Pls help ?

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Or you could try replacing the colis one by one until you find the culprit

Posted on Jan 16, 2009

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$2000.00 computer at the Jag dealer will fix the problem.

Posted on Jan 11, 2009

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I scanned vehicle obd scanner and got code P0304 misfire #4. What should I look for? To solve problems


Swap the #4 coil with #3, swap #4 spark plug with #2 and swap #4 injector with #1. Clear codes. Drive the car until it has a misfire code, again. If you get P0303, it's a bad coil. If you get P0302, it's a bad plug. If you get P0301, it's a bad injector. If you get P0304 again, it's a mechanical engine problem, like a burned valve, bad intake manifold gasket, worn cam, etc. or a wiring harness issue to the coil or injector, maybe even a bad computer.

May 06, 2015 | Cars & Trucks

2 Answers

What does code P0300 mean for a 2000 volvo engine


P0300 random misfire P0302 misfire cyl 2 P0304 misfire cyl 4.
Check spark plug and wires and coils

Feb 03, 2013 | 2000 Volvo S40

1 Answer

Misfire cylinder 6... 4.0L jag s type 2000


MISFIRE ON CYLINDER 6 COULD BE FAULTY SPARK PLUG OR BAD IGNITION COIL OVER THE SPARK PLUG,YOU COULD HAVE HAVE CLOGGED FUEL INJECTOR.CLEAN ALL FUEL INJECTORS USING A CAN OF SEAFOAM TO 3/4 TO FULL TANK OF GAS SEE IF NUMBER 6 MISFIRE CLEAR UP, IF NOT COIL OR FUEL INJECTOR COULD BE AT FAULT.ALSO CHANGE 6 SPARK PLUG FIRST.BEFORE BUYING NEW COIL OR FUEL INJECTOR THAT WAY YOU KNOW PLUG NOT THE PROBLEM.

Apr 11, 2011 | 2000 Jaguar S-Type

4 Answers

Got a p0304 code come up on my 2002 olds Bravada, replaced camshaft and it still didnt fixed it?


P0304 Code - Cylinder #4 Misfire Detected
A P0304 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 #4.

Symptoms may include:
* the engine may be harder to start
* the engine may stumble / stumble, and/or hesitate
* other symptoms may also be present

Causes: A code P0304 may mean that one or more of the following has happened:
* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer

Possible Solutions:
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.


Hope helps.

Apr 09, 2011 | 2002 Oldsmobile Bravada

2 Answers

2000 honda crv p1399 and p0301 check engine codes


Code P1399 is specific to Honda - it is an error code for "multiple variable misfires detected". P0301-P0304 are common OBDC codes for all cars, specifically "misfire in cylinder X".

You will get the P0301-P0304 codes on your OBDC reader when you plug it in (if actually errors), but will only find the P1399 if you select Honda as the manufacturer.

Just got these errors today on my CRV 2000. Now I have to figure out what is causing two of the cylinders to misfire.

Mar 08, 2010 | 2000 Honda CR-V

2 Answers

What does the error code P0304 mean?


A p0304 is a cylinder misfire on number 4 cylinder. Possible causes are faulty spark plug wire, bad spark plug, or faulty ignition coil. Depending on how many miles are on the vehicle, you may just need a simple tune up.

Oct 17, 2009 | 2005 Jeep Liberty

1 Answer

2000 dodge intrepid engine light on, power loss, rough idle


P0304 Cylinder 4 Misfire Detected P0354 Ignition Coil 4 Control Circuit P0204 Injector 4 Control Circuit You need to check injetror wires an coil wires .If good, The new coil my not be good.The Injector my be bad. If good it the ECM Check all fuses.

Jan 15, 2009 | 2000 Dodge Intrepid

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