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verify that it is hot with scantool ,maybe false temp in dash , radiator full ? radiator cap in good shape ? radiator fan working ? thermostat been serviced ? use only name brand cap and thermostat , i have had more than one cheap brand fail
verify that it is hot with scantool ,maybe false temp in dash , radiator full ? radiator cap in good shape ? radiator fan working ? thermostat been serviced ? use only name brand cap and thermostat , i have had more than one cheap brand fail
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The firing order is 1-3-4-2. The gap is listed on the emission information sticker under the hood. This sticker will have lots of info which includes valve lash. It will be listed in millimeters, example: 0.22 +/- .02mm. Some feeler gauges list both standard and mm measurements, otherwise a conversion can be found without much trouble. This procedure should be done while the engine is cold to get the best results.
P1259 HONDA - VTEC System Malfunction Possible causes- Low engine oil pressure or level - Open or short circuit condition - Faulty VTEC oil pressure switch - Faulty VTEC solenoid When is the code detected?The P1259 is set when there is a problem in the VTEC Oil Pressure Switch circuit or VTEC Solenoid Valve circuit
I not that familiar with the honda civic vtec, but most cars have a voltage regulator for the battery. Many of the new alternators have this item belt-in, but others are separate components. You may want to check to see what your design is for your model. al.ames
vtec is controlled by oil pressure so first check the oil, if it is low that can cause it. if you change your oil the way you should then the solenoid could be bad on most Hondas it is right by the oil filter.
P1259 is a code for vtec malfunction usually cause by a bad vtec solenoid, vtec pressure sensor, low oil level, bad connection. Was oil change done? May want to check the oil level. P1166 is a code for a primary o2 sensor 1.
reset the ecu pull #6 fuse 15a for 10 msec. check oil level fill if needed. start engine hold at 3 grand for at least 2 sec road test if still comes back 1259 repeat 2 times. If it is gone it is intermit problem check for loose terminals at VTEC solenoid vavle oil pressure switch and the ECM/PCM. If you still have the code turn ignition off remove resonator disconnect the VTEC oil pressure switch 2p connector check for contnuity between VTEC oilpress switch terminals 1 and 2 if none replace the oil pressure switch. if yes measure voltage between ECM/PCM connector B9 and body ground. Voltage? repair open wire between B9 and the oil pressure switch. If no than the ECM/PCM will need to be checked for the latest software and reprogrammed to be further diaged. This will only be able to bedone at the dealer.
intermittent overheating
no spark
verify that it is hot with scantool ,maybe false temp in dash , radiator full ? radiator cap in good shape ? radiator fan working ? thermostat been serviced ? use only name brand cap and thermostat , i have had more than one cheap brand fail
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