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03-13-2016, 02:46 PM | #1 |
Vito
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P1542 & CAN transmission - no power runs improperly
Hope this helps 2000 528iT (manf-12/99) @ 200,000 miles
I am holding the pedal steady & 1/2 way, engine should reach a stable 4-5000 RPM My (former) mechanic said i needed a new transmission ($2000+ !) & Carmax said they would give me $300.00 on trade, an insult! so I took matters into my own hands... - idled fine - but ran rough as soon as you touch the pedal - would not hold RPM or go above 2000 RPM so -> -unplug mass air flow (MAF) sensor, RUN , but sometimes ran rough & sometimes smoothed out and ran great! -shut off, plug in MAF - EML & DCS (circular arrow light with triangle "! " in center) lights disappeared IDLE SMOOTHER THAN EVER HAS , revs out ,Transmision DOESN'T SLIP!!! Held it in first? Stepped on it & shifted to 2nd ok. - 5 minutes later of revving DSC & then EML came back From my Carista WIFI / iPhone code reader: OBD2 - confirmed: P0101 - Mass or Volume Air Flow "A" Circuit Range/Performance ( yes I unplugged it) P1542 (Google, forums: Pedal / throttle position sensor - P1189 EML CAN transmission torque (DSC?) safe mode collectively gained advice: #1 vacuum leak in intake #2 throttle body sticking #3 servo or sensor error - need new throttle body Explored the BMW intake yesterday Found a couple vacuum leaks & bad hoses, 1. vacuum hose (1/8") broke to oil seperator 2. plastic box attached to upper intake bellows not seated 3. bad hose (3/8) upper intake bellows cleaned everything & dielectric grease some seals on intake. Tighten everything bit more when I put it back together & ran worse. But ... Oops forget to plug in throttle body. HaHA ! these codes: P0120 - Throttle/Pedal Position Sensor/Switch "A" Circuit P1765 - CAN Throttle Valve Just remembered my mistake while watching tv, so ran out 10pm in dark to plug it in - then All error code gone & it runs fine. Fixed it with time, learning understanding from forums & youtube, patience & stuff lying around from my fuel filter & regulator repair. Last edited by vito.icon; 03-13-2016 at 05:10 PM.. Reason: video link |
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528i, p1542, throttle body |
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