Dad's 1987 325 won't start - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

Reply
 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 01-14-2008, 02:47 PM
n00b
 
Join Date: Jan 2008
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Dmtalon is on a distinguished road
(Thread Starter)
Question Dad's 1987 325 won't start

Hey everyone...

My father called me the other day and asked if I could come help him fix his car, or at least look at it. He has a 1987 325 5spd 4dr (no other letters/numbers which I believe means e?) with ~275k miles on it.

The other day he started it, and walked down to get the mail, while walking back towards the car it stalled and hasn't started since. He has a 325 manual and asked if I could come over and help him figure it out.

First off, I checked for Spark at the Plug, NO SPARK Next I checked for battery voltage at the Coil Pin 15 (+ side) Good voltage. Checked Primary/Secondary resistance across the coil and everything was pretty close to spec.

Pulled the distributor cap/rotor. It looked pretty old and at first we couldn't get any connection on the Rotor, and there was a hairline crack running down the center of the plastic that held the rotor contact in place. Figured "Bingo", so we ran up to Autozone and picked up a new cap/rotor.

Put everything back together, and NOTHING! Rechecked everything and all was hooked back up correctly. We checked the fuses again, even testing them with a multimeter just to make 100% sure.

Tried running the coil wire right close to a piece of grounded metal to see if it would spark, but we get nothing there either.

It seems the next piece in the puzzle is the "Motronic Control Module" according to the book, but after doing some searches here, It looks like it could also be the Crank sensor too.

Are either of these easy to test? Where is the Motronic CM located? Are there any "obvious" 1987 BMW things to check before pointing at the Motronic unit?

TIA for any information and/or links you can point me towards in order to get this thing running again.


One more thing:

I The plugs when you pull them out seem DRY of any fuel. So I'm guessing we're not getting Spark or Fuel. I was going to pull the fuel line off the FPR but the stupid band clamp was on so I couldn't get to it. I tried removing the two 10mm bolts holding it to the fuel rail but it didn't want to come off. I figured it was just an o-ring of some sort holding it on, but with nearly 300k miles I didn't want to yank too hard so I don't know 100% that we're not getting fuel, but I'm guessing we aren't by how dry the plug is.

Last edited by Dmtalon; 01-14-2008 at 02:51 PM.
Dmtalon is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 01-14-2008, 02:55 PM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
also check you main relay mine e30 did that to me... i wanted to kill my self after all the diagnosing replacing the referance sensors cap rotor coil..... turned out it was the relay... check that make sure it is in working order

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#3 (permalink) Old 01-14-2008, 02:57 PM
n00b
 
Join Date: Jan 2008
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Dmtalon is on a distinguished road
(Thread Starter)
I saw someone talking about that too, where is that located? Is it part of the fuse box? Because looking at the manual it didn't really show any "main relay" just relays for blinkers / wiper etc..
Dmtalon is offline  
#4 (permalink) Old 01-14-2008, 03:04 PM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
it is mounted on the outside of the fuse box from what I remember also is your fuel pump running?

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#5 (permalink) Old 01-14-2008, 03:35 PM
n00b
 
Join Date: Jan 2008
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Dmtalon is on a distinguished road
(Thread Starter)
I was going to try to pull he fuel pressure regulator line off, but the hose clamp was facing down, and I wasn't sure how to remove the FPR. I *thought* it would just pull right off, but there was enough resistance that I was scared I'd break something so I stopped.

I asked my Dad if he *ever* heard the fuel pump 'prime' the system before a start. He said no, so without pulling that line off I'm not sure how else to check.
Dmtalon is offline  
#6 (permalink) Old 01-14-2008, 08:31 PM
Im Bluffin With My Muffin
 
AlpineSixAndSeven's Avatar
 
Join Date: Nov 2006
Location: Palo Alto, CA
Posts: 5,992
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold AlpineSixAndSeven is a splendid one to behold
Send a message via AIM to AlpineSixAndSeven
if you turn the key on it should prime the system. also check the ICV..

1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded
I am Captain Obvious
AlpineSixAndSeven is offline  
#7 (permalink) Old 01-14-2008, 08:55 PM
Neutral Member
 
Crispy1st's Avatar
 
Join Date: Dec 2006
Location: Surrey, British Columbia
Posts: 75
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Crispy1st is on a distinguished road
FYI no letters and no numbers on a '87 325 doesn't mean 'e'. It means he has to crank the windows by hand.

Crispy1st is offline  
#8 (permalink) Old 01-15-2008, 07:24 PM
n00b
 
Join Date: Mar 2007
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
kenika65 is on a distinguished road
To check your to see if your fuel pump is getting power, pop up your back seat and open the inspection cover on your passenger side. When you turn the key off then to the on position the pump will get power and when you are cranking(in start position) also.
kenika65 is offline  
#9 (permalink) Old 01-15-2008, 08:16 PM
Crazy Fabricatin' Admin
 
gotKRAUT's Avatar
 
Join Date: Feb 2004
Location: Elk Grove, CA
Posts: 9,355
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute
Send a message via AIM to gotKRAUT Send a message via MSN to gotKRAUT Send a message via Yahoo to gotKRAUT
Quote:
Originally Posted by Crispy1st
FYI no letters and no numbers on a '87 325 doesn't mean 'e'. It means he has to crank the windows by hand.
the non letter 325's were the Eta motor still..its just the "Super Eta" but theres nothing really all that super about it

Kyle Sutherland

1995 BMW 540i/6:
The Calypso Beast Vid 0-70ish
1987 BMW 325es: Face & Butt Lifted/M50tu Swapped*Sold*
1985 VW Scirocco: Too many mods, money pit*Sold*
E34 Plate Filler Wanted!
gotKRAUT is offline  
#10 (permalink) Old 01-15-2008, 10:01 PM
2nd Gear Member
 
DIRTE30's Avatar
 
Join Date: Mar 2006
Location: Elizabethtown, KY
Posts: 393
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute
Send a message via Yahoo to DIRTE30
Ok... first, don't panic! No starts are the easiest drivability problems to diagnose! Do me a favor before you do anything drastic. Put all the ignition back to normal and take the Idle air control motor hose off of the intake and spray some WD40 in there while your pops cranks her over. Sometimes ignition systems can be very sneaky! This will make the engine fire if you are getting spark. Be very liberal with the spraying! If no dice... then you know for sure that you aren't gettin fire to the cyl's. At this point it matters not whether you have fuel or not because whatever is causing your lack of spark is probably causing your lack of fuel as well. Being as it was all of the sudden like... it sounds like it could be a ground problem. Be sure that the ground at the ECM has continuity with ground at the battery. If not... start cleanin!
DIRTE30 is offline  
#11 (permalink) Old 01-15-2008, 10:04 PM
2nd Gear Member
 
DIRTE30's Avatar
 
Join Date: Mar 2006
Location: Elizabethtown, KY
Posts: 393
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute DIRTE30 has a reputation beyond repute
Send a message via Yahoo to DIRTE30
By the way... I don't think I remember any E30's priming the fuel system before cranking. The fuel pump starts running when it gets a signal from the crank sensor.
DIRTE30 is offline  
#12 (permalink) Old 01-21-2008, 08:05 PM
Neutral Member
 
Crispy1st's Avatar
 
Join Date: Dec 2006
Location: Surrey, British Columbia
Posts: 75
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Crispy1st is on a distinguished road
Thanks Kraut, I have the '87 325 and my nieghbour got an '87 325e so I thought the difference was 'e'lectric windows and sunroof, my bad.

btw what do you think of the new wheels?


Last edited by Crispy1st; 01-21-2008 at 08:08 PM.
Crispy1st is offline  
#13 (permalink) Old 11-12-2010, 10:52 PM
n00b
 
Join Date: Nov 2010
Location: Santa Barbara, CA
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Argermacher is on a distinguished road
What's the Eta motor mean?

Quote:
Originally Posted by gotKRAUT View Post
the non letter 325's were the Eta motor still..its just the "Super Eta" but theres nothing really all that super about it
I just bought a 1987 325 with no letters after the 325...what differentiates that from all the others?
Argermacher is offline  
#14 (permalink) Old 11-18-2010, 08:42 AM
n00b
 
Join Date: Oct 2010
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Markdas is on a distinguished road
spark

Have you got this sorted yet?

As mentioned, by systematic and don't assume you know the fault and start halfway along the process?

Check the battery voltage is good and connections are good under the hood on the bulkhead passenger side. With the key in position 2 but engine off, check if you have 12v at the coil, main relay and fuel pump relay.

If not you have a break somewhere, or the immobiliser has decided to kick in?

If you have voltage at the coil, check for spark again by removing a spark plug or putting a new spark plug into the HT lead you remove. Ground it and stand clear, then crank the engine. If no spark, check the crank position sensor....wipe it clean and check the gap is about 1mm at the crank pulley end. then follow the cable back to the connector and disconnect, check the resistance, its should be about 500 ohms I think. Also check the wire carefully, if this has failed you won't get a spark and it wont start?

How are all the spark plugs, HT leads and rotor arm?

Be systematic and we can get you started again soon!

Mark
Markdas is offline  
#15 (permalink) Old 11-18-2010, 11:36 PM
n00b
 
CoryMStew's Avatar
 
Join Date: Nov 2010
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
CoryMStew is on a distinguished road
ok so i just got my e30 and al is well but it is getting itself to the red and idling crazy, the thign is we think it is the fan clutch that isnt spinning in high temp mode. is it possible forme to swap the e28 fan in there to the water pump and have it spin at the same speed as my engine?
CoryMStew is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E21, E30)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
1987 BMW 325 Convertible 5SPD Red Leather - $3000 OBO in NY tommygun124 Cars For Sale 3 02-04-2007 11:16 PM
323i Wouldn't Start TRuckee 3-Series (E46, E90) 8 12-04-2005 02:41 PM
1987, 325ic ,hot Running Engine ramkitty 3-Series (E21, E30) 3 06-09-2005 10:57 AM
VIN CHECK ON M6...please help VivaLaM5 Bimmer Talk/Motorsports Talk 1 07-12-2004 02:27 PM
1987 BMW 325is Won't Start. Help Please!!!! kai0110 3-Series (E21, E30) 1 11-26-2003 10:46 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome