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I have the codes now.They are as follows:P0300 (1/12) RANDOM MISFIRE DETECTED.SEVERITY 2 OF 3 REPAIR IMMEDIATELY IF DRIVING ABILITIES ARE PRESENT THREAT TO ESSENTIAL SYSTEM COMPONENTS IF NOT REPAIRED ASAP. P 0300(12/12) pending random misfire. p0305 (4/12) cylinder 5 misfire. P0304 (10/12) CYLINDER 4 MISFIRE. P0304 10/12 CYLINDER 4 MISFIRE. P303 (9/12) CYLINDER 3 MISFIRE. P0302(8/12) CYLINDER 2 MISFIRE. P0301 (7/12) CYLINDER1 MISFIRE. P0305 CYLINDER 5 MISFIRE.(6/12). P0304 (5/12)CYLINDER 4 MISFIRE. P0303 (4/12) CYLINDER 3 MISFIRE. P0302 (3/12) CYLINDER 2 MISFIRE. P0301 (2/12) CYLINDER1 MISFIRE.P0300 GENERIC STORED FUEL SYSTEM 1 CL FUEL SYSTEM 2 CL CALC LOAD 35.3 ECT 142 STFT B1 *4.7%
FUEL PRESSURE 60-64 PSI WARN START THATS ALL OF IT!!!
FUEL PRESSURE 60-64 PSI WARN START THATS ALL OF IT!!!
Wow, the last time I saw codes like this on my LR2 I had a burnt valve which caused all the cyls to misfire. You didn't say, but I assume your Check Engine light is flashing?
Probably time to take it to a shop. They may perform a relative compression check to determine if compression in each cylinder is consistent. This diagnostic test is easy, inexpensive and will provide important info. Your mechanic friend can do it himself if he has a scope.
If you have low compression on a cylinder, the next step is a wet compression check to get an idea if it's a bad valve or piston rings. If they find problems with the compression, they may need to do a teardown of the head ($$$) to visually inspect the cylinders and confirm the problem. These additional diagnostics are expensive, but cheaper than a new car. This describes the journey I had with my vehicle. Hope your luck is better.
Probably time to take it to a shop. They may perform a relative compression check to determine if compression in each cylinder is consistent. This diagnostic test is easy, inexpensive and will provide important info. Your mechanic friend can do it himself if he has a scope.
If you have low compression on a cylinder, the next step is a wet compression check to get an idea if it's a bad valve or piston rings. If they find problems with the compression, they may need to do a teardown of the head ($$$) to visually inspect the cylinders and confirm the problem. These additional diagnostics are expensive, but cheaper than a new car. This describes the journey I had with my vehicle. Hope your luck is better.
Last edited by LR2driver; Sep 21, 2024 at 07:31 PM.
I have the codes now.They are as follows:P0300 (1/12) RANDOM MISFIRE DETECTED.SEVERITY 2 OF 3 REPAIR IMMEDIATELY IF DRIVING ABILITIES ARE PRESENT THREAT TO ESSENTIAL SYSTEM COMPONENTS IF NOT REPAIRED ASAP. P 0300(12/12) pending random misfire. p0305 (4/12) cylinder 5 misfire…
Please don’t be discouraged. The codes you provided are generic codes, with generic reasons. These are not LR specific codes nor reasons.
LR codes look like P0301-##. It is these extended codes that allow an LR savvy technician, to get to the root of the issue, efficiently, utilizing the pinpoint tests. Any other path is wasteful.
I would heed my colleagues suggestions of getting in to a shop. Again, don’t be dismayed until a proper diagnosis by the qualified LR specialist is done. Any other path is based on rumor, innuendo and hypothesis. And will end up costing more.
Truly, the culprit can be something simple as opposed to dire. The fix “cheaper” as opposed to “expensive”.
As for the independent LR specialists, they are easy to locate. Typically they strictly focus on LR and Jag and are filled or managed by technicians that spent time at the dealer. (Where do you think they got all their specialized training). And their parking lots are full and they are the busy ones.
Fwiw



