this doesn't sound too good.... help! - BMW Forum -
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 07-03-2008, 03:37 PM
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Exclamation this doesn't sound too good.... help!

1994 325i E36:

Ok, just when I though this mission was over. Daughter had a fender bender 2 weeks after buying the car. Replaced the entire coolant system pretty much. The fender bender hit the fan blade, the fan blade hit everything and cut things up. Replaced all hoses, therm., radiator, fans, etc.... Got it bled properly. Drove great, sounded great. No oil in the coolant, no coolant in the oil. Trans. fluid looks good., oil levels are fine, nothing on the driveway.

QUESTION- Did this yesterday then again today...... I went to start the car. Heard a loud thunk noise under the hood immediately and quickly, then it wouldn't start. Battery is fine.
Waited a few seconds, started it, no thunk, no start.
Waited a few more seconds, no thunk, STARTED FINE, RAN FINE.

Did this again this morning. Same big thunk, no start.
Waited a minute, no thunk no start.
Waited another minute NO THUNK, STARTED FINE.

Anyone heard of this before? I'm by far not a mechanic but have worked on all our cars for years myself, fixing and replacing major parts. I've never had this one happen before. Don't know if I want to send my daughter off driving even though it sounds fine now. What is the single thunk that makes it not start for a couple minutes? HELP!!
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#2 (permalink) Old 07-03-2008, 04:13 PM
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wow, that does sound weird. I have a '95 325i myself, but never had that happen. these E36's can sure develop some odd problems. good luck, and if i think of anything i'll let ya know

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#3 (permalink) Old 07-03-2008, 07:54 PM
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Does it sound like a backfire, maybe through the intake hose & maf sensor, before starting 1st thing in the morning, have the hood open & have someone stand on the driver's side of the car & listen......that would explain it not starting right after you try immediately, maybe a slight rich mixture or maybe you stepped on the gas prior to starting.....maybe through on link.....

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#4 (permalink) Old 07-04-2008, 01:24 AM
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Did you maybe forget a wrench in the engine compartment that got thrown off in the afterward? ;-)

Seriously... in our zeal to do things like these, we sometimes forget...
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#5 (permalink) Old 07-24-2008, 06:38 PM
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Well I took my time I was busy but I replaced the starter. After that FUN job (I took advantage and changed the fuel filter while I had the whole thing apart) the moment of truth and it started right up. Sounded great. Took it for a drive, pulled into the driveway and the car died. So forget it I'm tired I took it in, thought whatever else it needed just let me know. The mechanic said the starter I had just put in had died after 4 miles! Brought it back home, changed the starter AGAIN. Moment of truth, started right up, runs great.

Questions: Now I have the battery indicator light, the ABS light and the Engine light on. NICE. Also has a bit of a rough idle after it's warmed up. The engine light was on before and the code came back air flow problem or something like that. After I replaced the starter before the engine light went off. So maybe I have something in there I need to check again since I had the whole thing apart in the air flow. The shop couldn't test the alternator because the starter was dead but they said the battery charge was fine even a little high so they thought it was probably fine. The battery and ABS lights were not on at all until I just put everything back together. Anyone have ANY idea's before I jump back into it I would appreciate on the somewhat rough idle and the indicator lights..........
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