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#31
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD |
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#32
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2007 M5 V10 ESS Supercharged 750chp SMG 2001 X5 Topaz Blue/Tan 3.0 2005 X5 V8 M Sport Black on Black 2001 530i 5 Speed Turbo Project and a number of other vehicles... |
#33
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That may be true, but all I need is one intelligent answer to fix it.
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2007 M5 V10 ESS Supercharged 750chp SMG 2001 X5 Topaz Blue/Tan 3.0 2005 X5 V8 M Sport Black on Black 2001 530i 5 Speed Turbo Project and a number of other vehicles... |
#34
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FWIW, I think what you are seeing on the 'scope is just high frequency "leakage" on the unterminated (floating) starter DC wiring. The high input impedance of the 'scope will tend to pick up spikes etc. from the many PWM cicuits in the car...
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#35
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Interesting, makes sense to me as that is the typical oscilloscope pattern you would see for a PWM.
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2007 M5 V10 ESS Supercharged 750chp SMG 2001 X5 Topaz Blue/Tan 3.0 2005 X5 V8 M Sport Black on Black 2001 530i 5 Speed Turbo Project and a number of other vehicles... |
#36
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Dunno for sure but might be an emergency lockout due to impact or something. Is your fuel pump humming?
I think these cars have a rollover sensor that would activate if the wheels are too far off axis or whatever the correct term is . Supposed to kill fuel to a rollover accident. Might cause send a signal to ignition also to prevent fire. Disconnect the battery for 30 mins or so to clear any codes? Sent from my iPhone using Tapatalk |
#37
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BMW's inertia switch sounds like it is self resetting with a battery disconnect? But it may also affect starter cranking? I'm sure it will affect fuel pump operation. I remember when they passed a federal law into effect for manufacturers to follow on that directive. Thanks for the input, hopefully getting to this ignition switch swap today!
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2007 M5 V10 ESS Supercharged 750chp SMG 2001 X5 Topaz Blue/Tan 3.0 2005 X5 V8 M Sport Black on Black 2001 530i 5 Speed Turbo Project and a number of other vehicles... |
#38
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I swapped electric starter/ ignition switch without taking the old one out of place physically, hooked in the new one in electrically, kept the key in the ignition and then bam! Nothing but indifference compared to the old switch.
I tried to check starter relays with a generic Bosch relay, but will that work for testing purposes? Not even sure which one it is on my relay panel in the passenger side under the hood box. Mine does not look exactly like pictures I’ve seen. Here is the configuration of my relay box shown. With regards to checking the big fuse for the starter, what type and size fuse are they do I can get some spares? Do I just unbolt the fuse panel after a battery disconnect and then it’s reachable? Thanks for all your help, but still needing more!
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2007 M5 V10 ESS Supercharged 750chp SMG 2001 X5 Topaz Blue/Tan 3.0 2005 X5 V8 M Sport Black on Black 2001 530i 5 Speed Turbo Project and a number of other vehicles... Last edited by HansBimmers; 10-22-2019 at 07:55 PM. |
#39
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Here are some pics of the complete module for reference. Also looks like there is some electronics, circuit board, possibly part of the factory alarm immobilizer in there:
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2007 M5 V10 ESS Supercharged 750chp SMG 2001 X5 Topaz Blue/Tan 3.0 2005 X5 V8 M Sport Black on Black 2001 530i 5 Speed Turbo Project and a number of other vehicles... |
#40
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The weather up in Northern Vermont had been pretty horrible for the last month starting with getting 10" of snow in mid November over one night, but today we got a respite from the weather and it was mild out!
I tested the big odd fuse for the starter on the back of the fuse panel, and there was 0.004 ohms between poles, so it appears good. I'm running out of things to test to get this 01' X5 started. I also tried the leave the ignition on for 20 minutes and try starting it, didn't start it. Funny thing was, the first night it started acting up and wouldn't start, it left us stranded at the mall parking lot for 2 hours while we tried jumping it, and a number of other tricks with the shifter, ignition switch, brake pedal and lever, and after 2 hours it started and I made it home, but has not started since then. Any additional ideas?
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2007 M5 V10 ESS Supercharged 750chp SMG 2001 X5 Topaz Blue/Tan 3.0 2005 X5 V8 M Sport Black on Black 2001 530i 5 Speed Turbo Project and a number of other vehicles... |
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2001, 3.0i, e53, no crank no start |
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