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7 Series - E23 / E32 (1977 - 1994)

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  #1  
Old 08-25-2015, 09:09 AM
juancarlosmgb juancarlosmgb is offline
juancarlosmgb
Location: Central America
 
Join Date: Sep 2012
Posts: 21
Mein Auto: BMW, MG-B, MG-BGT
E23 Intermittent problem

I've been running my 735i almost without any problem; but sometimes I am experiencing a intemittent failure. For instance, yesterday, I made a 100 miles trip, arrive to my destiny and turned off the car. When I tried to start the car, 20 minutes later, the car didn't start. The starter motor was ok and I tried to start the engine for several minutes. I left the car and came back a pair of hours later and the car started at the first attempt. It's not the first time I've had this problem.
Do you have any idea about what's happening?

Thanks in advance.
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  #2  
Old 08-25-2015, 11:36 AM
bmw-mania bmw-mania is offline
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Check battery..
confirm battery holds a charge.
then with a voltometer check for battery drain when key is in *off* position.


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  #3  
Old 08-25-2015, 12:48 PM
juancarlosmgb juancarlosmgb is offline
juancarlosmgb
Location: Central America
 
Join Date: Sep 2012
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Mein Auto: BMW, MG-B, MG-BGT
Hello, thanks for your response. The battery is ok and the starter motor was spinning strongly.
Some weeks ago I replaced the crank position and speed sensors; but I don't know if this intermittent problem is related with those devices.


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Originally Posted by bmw-mania View Post
Check battery..
confirm battery holds a charge.
then with a voltometer check for battery drain when key is in *off* position.


Cheers!
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  #4  
Old 09-01-2015, 09:33 AM
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BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
 
Join Date: Aug 2012
Posts: 4,006
Mein Auto: E23;E32;E34;E38;R50;R55
Could be if you have loose/corroded plug/socket joints. Clean and tight is the way to go.
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E21 318i; E23 735i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
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  #5  
Old 09-22-2015, 07:13 AM
juancarlosmgb juancarlosmgb is offline
juancarlosmgb
Location: Central America
 
Join Date: Sep 2012
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Mein Auto: BMW, MG-B, MG-BGT
Hello, I checked and tightened all the ground connections and maybe that was the problem as I've already made almost 1,000 trouble free miles. I'm very glad.
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