Question about 2001 Jaguar S-Type

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Jaguar misfire at 50 mph. diagnostics say cylinders 4and 8 misfire

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That's specific enough to be spark plugs and/or wires. Depending on the year (engine placement) it might be easy to check yourself but it'd also be relatively quick for a mechanic to do the same. If it were anything more serious like a crankshaft sensor, or the crankshaft itself, the car wouldn't maintain idle long enough to drive. Best to take care of this ASAP though.

Posted on Oct 29, 2012

  • petercasey1
    petercasey1 Nov 26, 2012

    hi, thanks for the advice. changed all plugs. diagnostics say misfire on 4. so i swaped coil 4 with coil 2 and the fault changed to cylinder 2. so i am trying new coils now, hoping his will clear it. once again, thanks.

  • petercasey1
    petercasey1 Dec 11, 2012

    hi again, changed coil and engine running smoothly. thanks.

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I installed a timing belt on my 03 kia sedona. a piece of the cover broke off and caused the cam to jump 6 teeth. i reset the timing am now getting code p300 p303 and p305. guess it is time to replace the...


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2004 Marauder and 2003-2004 Mustang vehicles built before 12/19/2004 equipped with 4.6L 4V/5.4 4V engine may exhibit a runs rough, lacks power, and engine misfire, prompted by a MIL light and DTC codes P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, and P0316.
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Diagnose engine for engine misfire concern. If diagnostics determine an engine misfire which is characterized by leakage through exhaust valve(s), only replace the affected cylinder head(s).
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My 2000 lincoln ls feels like it has a misfire while idling @ stops. excelerates fine until it hits between 40- 50 mph. then has same feeling of the misfire or low power. then once it reaches over 50 mph...


Buy one new coil from auto parts store $59.00

Walk it one cylinder at a time

Why would you swap coils,obviously one
of them is bad.

The one you took out of #5,find it ,and put in the
new one there.

I would put in new OEM Plugs.
They are a special tip just for the LS
at least on ones newer than yours
They are NGK even though they have motorcraft
on the ceramic shell.

Clean the throttle plate and MAF with the two
CRC products for that

I wouldn't rule out a bad EGR Valve as another issue,
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1 Answer

Have 2005 lincoln aviator - has miss at 30-55 MPH - no codes replaced all coils ( ford) & spark plugs (twice) - repair vacuum leak at PCV Still misses -- no codes -- help


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Slim possibility, but very expensive unless you have a service contract.
LINCOLN: 1999-2004 Navigator
2002-2003 Blackwood
2003-2005 Aviator MERCURY: 2003-2004 Marauder
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1 Answer

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