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E28 (1982 - 1988)

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  #1  
Old 11-20-2011, 02:33 PM
safetymatt safetymatt is offline
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Location: California
 
Join Date: Nov 2011
Posts: 1
Mein Auto: 1987 528e
87 528e start issues

My 1987 528e starts and runs perfectly.....sometimes. occasionally it will crank but wont start. If I wait 1/2 hour to 2 hrs and it starts up and runs great again. a mechanic friend (not a BMW mechanic) says probably a fuel pump but I believe I have both an internal and an external pump and before spending $300.00 on a "sounds like" diagnosis was wondering if anyone could shine a little light.
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  #2  
Old 11-20-2011, 05:54 PM
quimby55 quimby55 is offline
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Location: detroit
 
Join Date: Mar 2011
Posts: 3
Mein Auto: 86 325e, 84 528e (killed)
Wink

Give the main relay (closest to radiator 5 prong) a check im kinda new to it all with my 84 528e ive got issues and just today ordered a cheap working dme/ecm went over alot of stuff and have a pretty rotten engine harness too, oh and just ordered a main relay myself. Guess she's gonna be down for a few days, bummer. Crank sensor can be tested as well or swaped somewhat easily(grey connector, closest of the two towards engine i believe). Hope anything helps, I want to drive my bmw.
It seems to do wonders soldering up the dme/ecu for alot of people if you want to do that sometime too.
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