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  #1  
Old 01-17-2013, 12:48 PM
Chief Tech
 
Join Date: Jun 2003
Location: Chesapeake,VA
Posts: 189
1996 E320

Hello All. I have a 96 E320 that has a starting issue. This is what I found so far. There were codes in the computer relating to not having a signal from the crankshaft position sensor as well as a signal not sent from the remote. I changed the key and started getting a signal from the mirror as well as door locking. Now that I have that working I installed the crank position sensor and none of the codes are coming back. Ok now this is where it gets strange I have tried this 3 times on different days but now it doesn't seem to work. This is what I was doing that was making it start before. I would take the fuses out of the module in the computer box and install them back in, also unplugged the number 6 injector while inserting a noid light for the plug that plugged into the number 6 injector to see if I had injector pulse since I've always had good fuel pressure. The car would start right away. So I plugged the injector back in while it was running and the car runs smooth. Even had it running for an hour just to let it get a good heat soak. After about an hour of sitting I could go right back to the car and it would start up but if you let it sit for any longer it would not start. Its strange because if I didn't take the fuses out and unplug the injector while inserting a noid light it wouldn't start. I tried all types of different variations of this but that was the only thing that worked. Now I try to do the same thing and it doesn't work so this is what I know. The injectors are not firing due to no signal. I think I probably have a problem with the module in the computer box or a faulty ignition switch. Does anybody have any ideas on how to test it?? Thanks in advance!!

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  #2  
Old 01-17-2013, 07:27 PM
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Location: Evansville WI
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Hasn't had the transmission removed lately has it?
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  #3  
Old 01-18-2013, 06:36 AM
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Join Date: Jun 2003
Location: Chesapeake,VA
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Transmission has been removed

I think it has because the dipstick is not attached to the side of the head like its suppose to be. I was going to put a bolt in it but haven't gotten around to that yet. What are you thinking?
__________________
DRIVE HARD-DRIVE FAST-DRIVE TO GET THE HELL OUT OF MY WAY.

1986 190E 2.3-16 Pearl Black!!
1987 190E 2.3-16 Smoke Silver!!
1986 190E 2.5-16 Pearl Black!!
2004 CLK 500 Cabrio Designo package!!
1994 E320 Cabrio Red with black top!!
1985 500 SEL Anthracite Grey !!
2011 Subaru Impreza STI 380HP (Yeah Baby)
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  #4  
Old 01-23-2013, 12:54 PM
Chief Tech
 
Join Date: Jun 2003
Location: Chesapeake,VA
Posts: 189
Ok I think I have it narrowed down to the base module but not sure. I don't have injector pulse but I do have fuel pressure. Any ideas?
__________________
DRIVE HARD-DRIVE FAST-DRIVE TO GET THE HELL OUT OF MY WAY.

1986 190E 2.3-16 Pearl Black!!
1987 190E 2.3-16 Smoke Silver!!
1986 190E 2.5-16 Pearl Black!!
2004 CLK 500 Cabrio Designo package!!
1994 E320 Cabrio Red with black top!!
1985 500 SEL Anthracite Grey !!
2011 Subaru Impreza STI 380HP (Yeah Baby)
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  #5  
Old 01-23-2013, 04:41 PM
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Location: Evansville WI
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I had one once where the aftermarket shop decided to start tightening the bolts from the flex plate to the torque converter before having the trans tightened all the way and bent the sensor ring.
Depending on where the torque converter/flex plate stopped made it either start or not on the next attempt. had to put a scope on the sensor to discover this one. Other shop was really mad at what we charged for labor. It was a real head-scratcher for them, then gave up and sent it to us (the dealer). We didn't replace anything. I could see where the "wow" or wobble was in the ring and got it straight enough to give a uniform signal. It was weird though. If it cought the sensor ring in the right spot it would start right up. If it was in the bad spot it would crank and crank.
So the trick to test this would be to try to start it let s say 5 or 10 times in a row to see if magically one of the times it decides to start. It was real hit or miss on the car we had on if it would start. Sometimes it might start 2 or 3 times in a row, then not start once or twice, then start once, then not start like 5 times. Boy it was weird. Yours might be bent more or less than the one we had, affecting how often it will start.
I think you can see the edge of the sensor ring around the bell housing somewhere, been awhile since this happened. 11-12 yrs ago probably.
was on a similar car, may have been a bit newer, I want to say with a 722.6, not sure though.
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  #6  
Old 01-24-2013, 10:29 AM
Chief Tech
 
Join Date: Jun 2003
Location: Chesapeake,VA
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Thanks Gilly. I'm going to make a pigtail from the crank position sensor and hook it to a scope. I will let you know of my findings!!
__________________
DRIVE HARD-DRIVE FAST-DRIVE TO GET THE HELL OUT OF MY WAY.

1986 190E 2.3-16 Pearl Black!!
1987 190E 2.3-16 Smoke Silver!!
1986 190E 2.5-16 Pearl Black!!
2004 CLK 500 Cabrio Designo package!!
1994 E320 Cabrio Red with black top!!
1985 500 SEL Anthracite Grey !!
2011 Subaru Impreza STI 380HP (Yeah Baby)
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  #7  
Old 01-24-2013, 07:46 PM
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Join Date: Mar 2001
Location: Evansville WI
Posts: 9,616
I think I did it just using a inductive clamp on the sensor wire.
I also think that once I was on to what was going on that I could see the variation in this sensor ring, just by looking at it when the engine was running. I remember thinking I could have solved it just by knowing where to look. The impression I had is that they simply didn't have the transmission at least snugged up to the engine before they tightened the 6 bolts holding the torque converter to the flexplate.

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