Have tried just about everything, been to a very reputable mechanic and have replaced many key parts. AFM is about all that's left that might be the issue. Anybody have one they could let me swap in to test before buying a new one?
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Need help w/my no start, ready to sell!
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Originally posted by gearheadE30 View Postcome on, we need more symptoms than saying "my car won't start". Give us some background, and then someone might be able to help.
Initially died during acceleration on twisty mtn road. Thought it might be a failed injector. Had to tow it home
Since that time....
new fuel pump
new fuel filter
fuel pressure tested at rail
new Cam Position
junkyard Crank position that tests out to proper ohms
new intake boot
compression test
tank half full of fuel
cleaned ICV
spark test on each plug, wires not crossed
bench tested injectors, very solid
no fuses blown
no vacuum leaks
BMW tech had it for 4 days and could not solve the problem, everything tested independently
another BMW mechanic had it for another 2 days, got it very close to starting with replacement DME
yet another DME on it's way from M42 member
new FP relay
new Main Relay
started every time and ran great prior to 5500 rpm hiccup and death
any other questions?
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Originally posted by roguetoaster View PostSilly questions to follow, but I certainly need more info. I am sure you have cranked the engine by hand, is it spinning through properly? When you turn the key what happens? starter cranking? timing verified? pulled upper chain cover yet? Don't give up!
after turning key, starter engages, engines cranks over
timing verified by BMW tech, pinned crank and slipped cam tool on, lined up perfectly
no reason to pull upper chain cover, no mechanical changes occurred since engine was running properly
no silly questions, plenty more info if you should need it
not given up yet!
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Originally posted by bmwm42 View PostStupid fucking question have you checked every ground if the coil ground isn't well umm grounded the fucking car will never start. Just a thought
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Yep, sounds like you have it narrowed down to AFM woes. Do you still have the in line resistor or whatever it was fitted, looks like a harness extension on the wires for the AFM, if so delete it. If not hopefully it's just a wrecked AFM, although I have never heard of one failing on the go. The only other alternative is a bad wire somewhere shorted or chafed out of existence which will be very hard to find.
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Originally posted by roguetoaster View PostYep, sounds like you have it narrowed down to AFM woes. Do you still have the in line resistor or whatever it was fitted, looks like a harness extension on the wires for the AFM, if so delete it. If not hopefully it's just a wrecked AFM, although I have never heard of one failing on the go. The only other alternative is a bad wire somewhere shorted or chafed out of existence which will be very hard to find.
pulled off the in-line resistor
have begun the search for wiring issues, so far nothing
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Originally posted by bmwm42 View PostTry starting it with the pedal to the floor. Car sounds like it wants to start
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