Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #16  
Old 07-10-2010, 03:02 AM
Knappy Drag Racer
 
Join Date: Jun 2008
Posts: 1,725
Quote:
Originally Posted by 400Eric View Post
Quote:
Originally Posted by dproudfo
Also disconnected MAS to see if the idle improved; no result.


It would seem to me that disconnecting the MAS should have caused some kind of reaction, the fact that it didn't makes me think something's amiss with it.

"From what I've researched about a failed ETA is that they either work or they don't. (There isn't an "in between" where they'll cause slight problems)"

When the insulation on all those wires inside those ETAs go bad, they sometimes cause problems, but sometimes they work fine, just like when the main harnesses go bad, stuff works sometimes, sometimes it doesn't. I would think this would be less of an issue on a non-ASR car though. Does your car have ASR?
I still think what is expessed above should be explored.
Regards, Eric

__________________
89 300E "Benzer1" 15.924 Uncorrected
93 400E "Benzer3" 14.200 U.C.
95 E420 "Benzer4"
92 300E "Benzer5" 16.299 U.C. Future turbo CNG
87 300D "Benzer7"
87 300D "Benzer8"
87 300D "Benzer9"
87 300D/70 AMC Javelin "Sidewinder-Benzer"
87 300TD "Benzer11"
06 E320 CDI "Benzer12"
05 E320 CDI "Benzer12A"
71 AMC Javelin AMX 401 "Sidewinder"
74 AMC Hornet 401 "C.K.10" 13.63 U.C.
74 Bricklin SV1 "Presto" AMC 360 pwrd.
Reply With Quote
  #17  
Old 07-10-2010, 05:57 AM
Registered User
 
Join Date: May 2007
Location: Arizona
Posts: 760
FYI, you can unplug the ETA with the engine running. I did this on my 400E (non-ASR). The engine hunted around for an idle, but it did not stall. I suppose you could rule out the electrical function of the ETA as the cause of a misfire if you unplugged it while it was idling.

You can unplug it at the end near the module box. It has a spring-loaded canon plug that was engineered by Rube Goldberg.
__________________
1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles

Last edited by emerydc8; 07-10-2010 at 06:22 AM.
Reply With Quote
  #18  
Old 07-13-2010, 12:01 AM
dproudfo's Avatar
Registered User
 
Join Date: Jul 2006
Location: Saint Paul, Minnesota
Posts: 139
Side note that may or may not be related...

When I'm using cruise control...it isn't solid steady...it's as if the car is constantly decelerating and accelerating rather than having a nice smooth throttle.....relation to the ETA? From what I understand this unit controls the cruise control alongside the computer......
__________________
1995 E420
1998 SL500 Sport
2009 E350 Sport
1995 S500 Coupe
1992 500 SEL
Reply With Quote
  #19  
Old 07-13-2010, 01:41 AM
Knappy Drag Racer
 
Join Date: Jun 2008
Posts: 1,725
Yes, that may be a smoking gun.

Don't forget what I said about the MAS in my prior post.
Regards, Eric
__________________
89 300E "Benzer1" 15.924 Uncorrected
93 400E "Benzer3" 14.200 U.C.
95 E420 "Benzer4"
92 300E "Benzer5" 16.299 U.C. Future turbo CNG
87 300D "Benzer7"
87 300D "Benzer8"
87 300D "Benzer9"
87 300D/70 AMC Javelin "Sidewinder-Benzer"
87 300TD "Benzer11"
06 E320 CDI "Benzer12"
05 E320 CDI "Benzer12A"
71 AMC Javelin AMX 401 "Sidewinder"
74 AMC Hornet 401 "C.K.10" 13.63 U.C.
74 Bricklin SV1 "Presto" AMC 360 pwrd.
Reply With Quote
  #20  
Old 07-13-2010, 01:43 AM
Registered User
 
Join Date: May 2007
Location: Arizona
Posts: 760
A bad ETA cable can definitely affect your cruise control. I discovered this by accident.

O2 sensor electronics testing
__________________
1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles
Reply With Quote
  #21  
Old 07-14-2010, 10:40 PM
dproudfo's Avatar
Registered User
 
Join Date: Jul 2006
Location: Saint Paul, Minnesota
Posts: 139
Slow start....more smoking guns?!

One more note....started the car after work tonight and it was way slower to start than usual. Car was sitting for a good 12 hours so it wasn't a hot start but the turnover time is between 2-3 seconds before firing and tonight it was more like 6-7. Relation to the ETA??
__________________
1995 E420
1998 SL500 Sport
2009 E350 Sport
1995 S500 Coupe
1992 500 SEL
Reply With Quote
  #22  
Old 07-14-2010, 11:55 PM
PanzerSD's Avatar
Schießenstern
 
Join Date: Jan 2006
Location: Saskatchewan Canada
Posts: 2,351
That sounds like the pump is losing it's prime. does it do that 1-2 hours after shutting off?
__________________
RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

____________________________
FACEBOOK:
PANZER450
Reply With Quote
  #23  
Old 07-16-2010, 09:30 PM
dproudfo's Avatar
Registered User
 
Join Date: Jul 2006
Location: Saint Paul, Minnesota
Posts: 139
Yeah! I'll check the fuel pumps and the shop this weekend hopefully so I can have a closer look. Either way...the rail could either be losing its pressure during sitting/fuel pump prime problem...or could there be any relation to the ETA on this one?
__________________
1995 E420
1998 SL500 Sport
2009 E350 Sport
1995 S500 Coupe
1992 500 SEL
Reply With Quote
  #24  
Old 08-24-2010, 02:01 AM
dproudfo's Avatar
Registered User
 
Join Date: Jul 2006
Location: Saint Paul, Minnesota
Posts: 139
Fuel pressure bleed down fixed (blown out upper injector seal on the #1 cylinder). New ETA installed with no change in idle symptoms. I'm seriously running out of options here guys!! Next change is the alternator in hopes there MIGHT be a charging systems problem (long shot). The second option is that the seals within the intake manifold are starting to fail resulting in un-metered air getting into the engine causing all sorts of idle problems. Third on the list, maybe a longer shot are the camshaft position sensors. I'm shooting once again in the dark. Any insights welcome!!!
__________________
1995 E420
1998 SL500 Sport
2009 E350 Sport
1995 S500 Coupe
1992 500 SEL
Reply With Quote
  #25  
Old 08-24-2010, 12:54 PM
Registered User
 
Join Date: Jan 2010
Location: U.S.A
Posts: 347
i think i would rule out the egr as any possible issue,all that would do is cause a high or low idle,if the plunger had a leak it would be a vacum leak and it would cause a high or erratic idle,if the carbon was clogging it,it would bog down,it doesnt sound like thats your issue,your describing it more like a misfire between cylinders,possible defective coil pack,check your coil,then check your rotor for wear,or exxcesive black spotts or carbon build up,also inspect the inside of the dist cap,if its all black and white its from excessive wear and its arcing out the electrodes are not giving you a fulkl spark to ignite the fuel in the cylinder,you may want to replace your cap and rotor and also replace your ignition coil.this is just preventitive maintenance.
Reply With Quote
  #26  
Old 08-24-2010, 02:07 PM
PanzerSD's Avatar
Schießenstern
 
Join Date: Jan 2006
Location: Saskatchewan Canada
Posts: 2,351
I dunno....the EGR can do funny things to an engine, if it does have a leak to atmosphere, then it's a vac leak, but it can also leak exhaust gas into the intake tract when it's not supposed to, essentially reducing available vacuum or worse, slightly pressurizing the intake
__________________
RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

____________________________
FACEBOOK:
PANZER450
Reply With Quote
  #27  
Old 08-25-2010, 12:18 AM
dproudfo's Avatar
Registered User
 
Join Date: Jul 2006
Location: Saint Paul, Minnesota
Posts: 139
Doesn't an EGR problem throw the CEL???
__________________
1995 E420
1998 SL500 Sport
2009 E350 Sport
1995 S500 Coupe
1992 500 SEL
Reply With Quote
  #28  
Old 09-06-2010, 08:18 PM
dproudfo's Avatar
Registered User
 
Join Date: Jul 2006
Location: Saint Paul, Minnesota
Posts: 139
New Alternator

Another update...new Alternator installed today with no change in idle issue (or ABS/SRS light quirks...previous posts) Here's another note...the secondary harness controlling the alternator/starter is completely shot to hell. There was a pile of insulation on the floor after the job. Potential problems?? (Harness will be ordered in the morning)
__________________
1995 E420
1998 SL500 Sport
2009 E350 Sport
1995 S500 Coupe
1992 500 SEL
Reply With Quote
  #29  
Old 09-06-2010, 11:36 PM
Registered User
 
Join Date: May 2007
Location: Arizona
Posts: 760
I wouldn't expect the lower harness to cause engine problems. The starter and alternator wires are very heavy duty (see the pictures of my old harness at post #11 E420 Oil Quantity Indicator).
__________________
1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles
Reply With Quote
  #30  
Old 10-23-2010, 10:47 AM
dproudfo's Avatar
Registered User
 
Join Date: Jul 2006
Location: Saint Paul, Minnesota
Posts: 139
Ignition Coils and Lower Harness

Just finished replacing the ignition coils and the lower engine harness with no change in symptoms. Anyone have anything else to add to this post? I've exhausted all of my ideas except for MAYBE a manifold leak (as described above). Keep me posted!

__________________
1995 E420
1998 SL500 Sport
2009 E350 Sport
1995 S500 Coupe
1992 500 SEL
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 11:57 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page