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  #16  
Old 01-10-2009, 08:52 PM
oso oso is offline
'87 300TD
 
Join Date: Oct 2007
Location: San Antonio, TX
Posts: 189
Finally somebody talking the language I can follow! Yes- it sucks and yes it blows. Therefore I will not waste any more time on academic questions and get busy tracking the slow leak that causes the locks to "pop-up" few minutes after locking the car by key.

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  #17  
Old 01-10-2009, 10:24 PM
Unofficial wormcan opener
 
Join Date: Dec 2005
Location: Ashland, MA
Posts: 2,602
Just thinkin' out loud: Why would a slow leak cause the locks to go up? If it takes vacuum (sucking) to pull them down and pressure (blowing) to push them up, then a leak would just cause them to stay where they are. Also if you have a leak, wouldn't they go down very slowly or not at all? How long does it take for your locks to go down after you turn the key and initiate the sucking?

An easy test would be to lock the car and then pull the vacuum line off and see if the locks all go up. If they do then a vacuum leak can cause them to go up. If they don't go up, then I suspect the pump is cycling on again and causing them to go up.

I'll have mine apart tomorrow to install keyless entry. So if you have questions about how the pump works let me know and I'll test mine and let you know.
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss
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  #18  
Old 01-10-2009, 10:30 PM
babymog's Avatar
Loose Cannon - No Balls
 
Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,765
Okay, sounds electrical. As Bio said, they will stay where they are once the pump has done its thing. Think of an overcenter spring type mechanism, once past the center point, the locks are not going to move on their own.

If the key is on, and you push down the driver's door lock, I believe that it will do what you've described. Maybe it's if the driver's door is open, but I remember a mode that is like you describe and normal. I don't have an '87 anymore, but will try a couple of things in my '94 and hope it's the same (some changes were made in '90).

Another thing that you can try, if you have a mityvac or similar, is applying vacuum to the hose with the pump not connected, see if the locks go down, then disconnect the vacuum source. Same with pressure.
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  #19  
Old 01-10-2009, 10:56 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: Eastern TN
Posts: 20,841
Electical or mechanical. I've heard of cams and valves inside dual mode pumps wearing such that the lines aren't exposed to the appropriate vacuum or pressure side of the pump. In some cases the locks cycle continuously.

Sixto
87 300D
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  #20  
Old 01-10-2009, 11:00 PM
babymog's Avatar
Loose Cannon - No Balls
 
Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,765
Well I won't be helping on the mode-check tonight, ... going through the paces my '94 seems to have a leak (can hear it) in the driver's door actuator. Still works like normal though, just the pump doesn't turn off on pressure like normal, has to run until it times out (around 20seconds).

I'm not confident it is the same as the '87 anyway. Does your '87 have the black lid on black box pump? That is the early '87 version, and it was changed (not compatible) in mid MY'87 to one that times out so that it wouldn't continue to cycle if there is an air leak. Might want to consult the FSM on the changes from early to late if this is your problem.
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  #21  
Old 01-11-2009, 01:27 AM
Jeremy5848's Avatar
Registered Biodiesel User
 
Join Date: Mar 2006
Location: Sonoma Wine Country
Posts: 8,402
Tell us how it goes!

Quote:
Originally Posted by Bio300TDTdriver View Post
. . . I'll have mine apart tomorrow to install keyless entry. So if you have questions about how the pump works let me know and I'll test mine and let you know.
This is on my to-do-someday list. It should be easy and I'm thinking that you might not even have to open up a door, just parallel the lock–unlock wires where they connect to the pump under the rear seat. Looks like the receiver could go there too. You might need to add a relay depending on how your keyless entry system is built. (Details and pictures, please!)

Jeremy
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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
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  #22  
Old 01-11-2009, 01:31 AM
Unofficial wormcan opener
 
Join Date: Dec 2005
Location: Ashland, MA
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Quote:
Originally Posted by Jeremy5848 View Post
This is on my to-do-someday list. It should be easy and I'm thinking that you might not even have to open up a door, just parallel the lock–unlock wires where they connect to the pump under the rear seat. Looks like the receiver could go there too. You might need to add a relay depending on how your keyless entry system is built. (Details and pictures, please!)

Jeremy

Jeremy,

I'm following this thread.

I bought the Omega rec-11+ (which was used in the write up) I also picked up the DSV and 2 relays from Crutchfield. I will snap some pictures to add to the thread.
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss
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  #23  
Old 01-13-2009, 11:17 AM
oso oso is offline
'87 300TD
 
Join Date: Oct 2007
Location: San Antonio, TX
Posts: 189
Pump checks out. Turns out the passanger side lock was not going all the way down in the "lock" phase. Took the panel off and tested the lock without the panel: works fine, locks do not "pop-up" on their own anymore. Will see what happens after the panel is back on. Thanks for all the help and advise.
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  #24  
Old 01-13-2009, 08:40 PM
Jeremy5848's Avatar
Registered Biodiesel User
 
Join Date: Mar 2006
Location: Sonoma Wine Country
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"Driver's door priority"

Quote:
Originally Posted by Bio300TDTdriver View Post
Jeremy,

I'm following this thread.

I bought the Omega rec-11+ (which was used in the write up) I also picked up the DSV and 2 relays from Crutchfield. I will snap some pictures to add to the thread.
One of the eBay stores that has this unit says that the REC-11+ has "keyless entry with driver's door priority." Anyone know what "driver's door priority" is? My guess is that you have an option to unlock only the driver's door; I suspect that it would take some extra plumbing to do that on our cars, since there is only one hose running to all the locks in common.

I'll probably buy the Omega Excalibur REC-43T system for about $10 less than the REC-11+ since all I want is a simple lock/unlock operation.

Jeremy
__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
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  #25  
Old 01-13-2009, 08:47 PM
Unofficial wormcan opener
 
Join Date: Dec 2005
Location: Ashland, MA
Posts: 2,602
Does that unit require 2 relays? The REC-11 does according to the thread I followed. The $4 DSV just holds the relays and wires them correctly.
__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss
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  #26  
Old 01-13-2009, 08:57 PM
Jeremy5848's Avatar
Registered Biodiesel User
 
Join Date: Mar 2006
Location: Sonoma Wine Country
Posts: 8,402
I suspect that yes, the REC-43T will require relays. I have several in my junkbox and the whole thing should fit beneath the rear seat. I'll post some pix when I do the install.
__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
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  #27  
Old 01-13-2009, 09:20 PM
Unofficial wormcan opener
 
Join Date: Dec 2005
Location: Ashland, MA
Posts: 2,602
The REC-11+ is the same price, I think.

http://cgi.ebay.com/Crime-Guard-Omega-Rec-11-Keyless-Entry-K9-Excalibur_W0QQitemZ330298479989QQcmdZViewItemQQptZCar_Electronics_Parts_Accessories?hash=item3302984 79989&_trksid=p3286.c0.m14&_trkparms=72%3A1205|66%3A2|65%3A12|39%3A1|240%3A1318|301%3A1|293%3A1|294%3A50
__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss
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  #28  
Old 01-13-2009, 09:24 PM
Jeremy5848's Avatar
Registered Biodiesel User
 
Join Date: Mar 2006
Location: Sonoma Wine Country
Posts: 8,402
Ah, good, thanks, that's better than the one I found.
__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
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  #29  
Old 01-14-2009, 02:53 AM
Registered User
 
Join Date: Dec 2005
Location: Portland
Posts: 191
I put the REC 11 in a few years ago. It works and was easy to install, but it is easy to get out of sync and then you have to sit there unlocking and locking to get it back. The pump is too smart and the REC 11 is too dumb. Basically if you mistakenly manually lock rather than using the fob then when you try to actuate the pump to unlock it thinks it should be sucking, rather than blowing. You would think that every time you hit the unlock button it would try to blow and every time you hit lock it would suck but evidently that just isn't meant to be.
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  #30  
Old 01-14-2009, 11:00 AM
Unofficial wormcan opener
 
Join Date: Dec 2005
Location: Ashland, MA
Posts: 2,602
Quote:
Originally Posted by aersloat View Post
I put the REC 11 in a few years ago. It works and was easy to install, but it is easy to get out of sync and then you have to sit there unlocking and locking to get it back. The pump is too smart and the REC 11 is too dumb. Basically if you mistakenly manually lock rather than using the fob then when you try to actuate the pump to unlock it thinks it should be sucking, rather than blowing. You would think that every time you hit the unlock button it would try to blow and every time you hit lock it would suck but evidently that just isn't meant to be.
Thanks for the warning. I'll try not to lock it with the key. My brain is so programed to use the key, that I unlocked it that way once already.

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss
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