1 breakdown example one
Model: Cruiser of land of a 02 abundant cropland 4500, 1FZ-FE engine, travel course of development 9. 50 thousand Km.
Breakdown phenomenon: Car advocate reaction this car since because of accident rehabilitate hind, with respect to occurrence idle fast the phenomenon that regularity shakes, any breakdown are not had before this. Take over the test-drive after this car, engine idle when fast movement, sit in the hand inside cab to grasp turn to Pan Shiming to show feel engine regularity the ground shakes. When idle of prep above of engine rotate speed fast when, shake breakdown disappears, no matter any speed do not have bad influence,be in when travel.
Breakdown examination and eliminate: Let engine idle fast movement, read with X-431 detector take engine to control system and data to flow, it is in normal limits, and do not have breakdown code show. Since engine control system is regular, should emphasize report of examination high pressure. Car advocate hint the engine of this car ever heavied repair, also had detected in other repair plant, still changed for this high tension line, sparkplug and ignition coil. Phenomenon of the breakdown after be being changed is more serious than before instead, after the mechanical part of engine is decomposed afresh again, install, breakdown as before. Discover when the examination the high tension line is fittings of blame former plant, change after former plant high tension line, breakdown phenomenon is reduced than before, but did not eliminate completely. Tear open next sparkplug observation, those who use is platinic gold sparkplug, the job is regular. Inquire manual of former plant maintenance is informed, the sparkplug of this car is common model sparkplug, change entirely Cheng Fengtian is special and common model after sparkplug, test-drive, breakdown phenomenon disappears.
2 breakdown example 2
Model: A 95 abundant cropland·Asian dragon, travel course of development 15. 20 thousand Km.
Breakdown phenomenon: This car is in the automatic flameout that idle always does not have regularity when fast movement, the frequency of the flameout when awaiting signal lamp especially is more. Start normal movement again after automatic flameout, flameout phenomenon is not had when normal travel. Car advocate the ability after hinting this car is to lend a friend 2 days appears of phenomenon of this kind of breakdown. Firm in the begining day or 4 days of 3 automatic now and then flameout, it is normal that recrudesce is moved, because this also was not cared about, breakdown phenomenon is more and more serious now, everyday automatic flameout 5 or 6, changed in other repair plant for this a new idle fast electromotor, but breakdown as before.
Breakdown examination and eliminate: Because the breakdown of this car is abiogenesis sex breakdown, and do not have regularity, to maintenance the job brought certain difficulty. The breakdown of this car is general in idle the condition of fast movement falls incidental, and normal when travel, this explains circuit breakdown possibility is not large, because car shakes,idle is compared impossibly when travel fast when shake moment, the breakdown with circuit so undesirable contact should give eliminate, the high-pressured report that should check influence flameout mainly, oil path and idle fast control system.
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