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07-30-2010, 01:03 AM
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#1 | |
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Registered User
2010 JK Wrangler
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P0301 and P0300 Codes. running out of crap to change
2000 Jeep wrangler Sahara. 185000 miles.
Been chasing a P0301 and P0300 (cylinder 1 misfire and random misfire) for awhile now. What Ive done so far. Air sensor, cam sensor, crank sensor, new coil pack, new plugs, checked cat they said it was good, 6 new fuel injectors. I know the timing is completely controlled by the computer so it cant be bad timing. right? I'm thinking the fuel pump now and O2 sensors this weekend. After that im at a loss. This thing cant keep its engine light off long enough to pass inspection, so I dont know what to do. what next? Any tips you can offer to help narrow it down?
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07-30-2010, 01:27 AM
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#2 |
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Registered User
2010 JK Wrangler
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One more thought. is there suppose to be a paper spacer in the crank sensor?
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07-30-2010, 06:48 AM
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#3 |
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Registered User
2002 TJ Wrangler
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I would get some schematics of the engine wiring harness and start pin testing your wiring, its possible you have a frayed wire some where, or maybe a loose ground.
And a computer can only tell you what it senses is wrong, it cant diagnose itself so if your ECU is messed up, it wouldn't have the slightest idea so that could also be a possibility
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2002 X Shale Green 1.25" JKS BL, 1" MORE MML, RE 3.5" SF RE adj. front and rear track bars; Rear Adj. front and rear UCAs; J KS Quick Discos; AA SYE w/ Tom Woods drive shaft; GoFerIt Bellyup skidplate; 33" BFG Mud-terrains on black steelies |
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07-30-2010, 06:55 AM
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#4 |
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Bunny Puncher
 
2003 TJ Wrangler
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Yep. You need to check connections and wiring before you start replacing parts.
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If it's worth doing, then it's worth overdoing. Jeeps are like strippers...they should be topless as often as possible. |
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| Tags |
| p0301, p0300, code, error, advice, tj, wrangler |
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