Breakdown phenomenon:
1. Engine starts difficulty: Put into gear, quickly often flameout; Urgent quicken rotate speed not to lift, companion has temper of air inlet duct.
2. Gear-box D archives " skid " , quicken undesirable, l archives is normal.
3. Electronic leaf often turns, do not get water lukewarm control.
Breakdown analysis:
L. From the point of breakdown phenomenon, cause engine the reason of afore-mentioned breakdown ought to be mixture ratio too rare, and bring about mixture ratio to cross rare reason to have: Fuel pressure is insufficient; Electronic-controlled the system is unusual; Fuel injector jams; Air inlet duct is flat; Engine mechanical failure. Check above all electronic-controlled system: After starting engine, breakdown lamp " CHECK " go out, extract malfunction code, for normal code, electronic-controlled the system is regular; Measure pressure of the system that offer oil: With pressure the watch joins in benzine oil purifier gives oily mouth to go up, no matter idle fast still quicken, oil pressure all is 0. 25MPa, oil pressure is normal; Tear open fuel injector then below, the lotion that use Qing Dynasty is in intermittent clean clean below electrify condition, outfit car experiments, the effect takes a favourable turn somewhat, but did not solve a problem at all; Check mechanical part, air cylinder pressure, deserve to enrage phasic, ignition when, all have normal range inside. All systems that affect mixture ratio already all were checked end, but have not find breakdown reason, check later then electronic-controlled system: Measure flowmeter of water lukewarm sensor, air with digital avometer (impeller type) voltage, resistance, all be inside normal limits, and will insert receive a take out, computer can remember its malfunction code, measure resistance of sensor of position of solar term door, accord with a requirement completely, but when measuring wiring harness voltage, discovery is inserting the case that accepts a departure to fall, the signal voltage that inputs computer is 1. 6V, not agree with with mark fiducial value, and insert receive after disconnecting, computer cannot remember its malfunction code from beginning to end 41, examination electrical wiring also is not had unusual, that reason may be computer interior breakdown only, because this car is old money car, car condition already comparatived ageing, car advocate change innocently computer, can adopt other measure only: To raise mixture ratio, the slip resistor of a 10K join is in water Wen Chuangan implement insert receive on, adjust slip resistor, make its block is worth change, quicken delicacy till engine, and till it is normal that tail gas is discharged, write down right now slip resistor block is worth, the fixed resistor series connection that is worth with close block is in water Wen Chuangan implement in circuit, the breakdown of starting difficulty disappears, test-drive, put into gear no longer flameout, quicken strong, engine function returns to normal basically. Trouble removal: Press above method trouble removal.
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