HELP! I have a 2000 XJ8 that recently started running and idling
rough. Check engiine light came on and computer gives a PO300
random misfire code,PO301/PO302/PO303/PO304. My mechanic replaced
both valve cover gaskets, new plugs & boots, swaped coils,
compression test (good), checked fuel injectors (good),new gas
filter, he got a lower vacum resding than should be, getting a 14
reading he said it should be a 17. Seems to be running rich on the
one bank/side but doesn’t know what to do about it. I am at a stand
still right now and would greatly appreciate any advice on what to
try next. Thanks in advance!–
Babey
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
In reply to a message from Babey sent Sun 2 Nov 2008:
Jaguar X-TYPE 2.0 L P DTC EOBD
2002.25 Model Year
25
P0300 EMS
EOBD
Random misfire detected
Refer to Misfire Note, page 5
Misfire monitor drive cycle �
page 5
1 or 2 N None � Cylinder compression low
Worn camshaft / broken valve spring(s)
Fuel delivery pressure (low / high)
Fuel injector(s) restricted / leaking
Fuel injector(s) continuously open
Fuel contamination
Fuel injector circuit fault(s)
(Injector DTCs also flagged)
Spark plug failure / fouled / incorrect gap
ECM to ignition coil primary circuit fault
(Cylinder misfire detected DTC also
flagged)
Ignition coil failure
P0301 EMS
EOBD
Misfire detected � cylinder 1
Refer to Misfire Note, page 5
Misfire monitor drive cycle �
page 5
1 or 2 N None � Refer to P0300 Possible Causes
P0302 EMS
EOBD
Misfire detected � cylinder 2
Refer to Misfire Note, page 5
Misfire monitor drive cycle �
page 5
1 or 2 N None � Refer to P0300 Possible Causes
P0303 EMS
EOBD
Misfire detected � cylinder 3
Refer to Misfire Note, page 5
Misfire monitor drive cycle �
page 5
1 or 2 N None � Refer to P0300 Possible Causes
P0304 EMS
EOBD
Misfire detected � cylinder 4
Refer to Misfire Note, page 5
Misfire monitor drive cycle �
page 5
1 or 2 N None � Refer to P0300 Possible Causes
P0305 EMS
EOBD
Misfire detected � cylinder 5
Refer to Misfire Note, page 5
Misfire monitor drive cycle �
page 5
1 or 2 N None � Refer to P0300 Possible Causes
P0306 EMS
EOBD
Misfire detected � cylinder 6
Refer to Misfire Note, page 5
Misfire monitor drive cycle �
page 5
1 or 2 N None � Refer to P0300 Possible Causes
DTC SYS FAULT DESCRIPTION MONITORING CONDITIONS CK ENG OTHER
DEFAULT ACTION CM PIN POSSIBLE CAUSES–
Vaughn Reese
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