Intermittent Stalling. - Page 2 - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #21  
Old November 14th, 2011, 08:26 PM
RickM
Status: Offline
Rick Mabus
95 D-90 ST
Member
 
Join Date: Aug 2004
Location: Dallas, tx, Dallas
Posts: 330
Alright. I pulled off the part next to the air filter and checked. No hole no hose. I then pulled the large air hose attached to the drivers side top of the engine. I flushed it big time.

Switched out the stepper also and installed a new one.

Went to fire it back up and it struggled to start I am thjinking it is because I had so much seafoam crap in it. Anyway, I got it to start and after it tried to run a little rough it fired and stayed running. I did not drive it yet which is next, which will hopefully clean it out a bit and get me humming like a cat.
Reply With Quote
Sponsored Links
Advertisement
 
  #22  
Old November 15th, 2011, 09:46 AM
RickM
Status: Offline
Rick Mabus
95 D-90 ST
Member
 
Join Date: Aug 2004
Location: Dallas, tx, Dallas
Posts: 330
Okay. Anyone taking my advise be careful (on the location of the trottle body). I changed out my stepper last night and it went extremely well. I don't see any purpose of cleaning it, if the part is $32 bucks. Seems to me like buying and installing one a year is worth it whether it needs it or not if you ask me. Anyway I took the seafoam stuff to my throttle body which was on the bumper side of the large air hose(on top of the engine), not the firewall side. I had that wrong in my picture. Anyway I hit the engine with seafoam and blew out everything in there and it came out pretty clean. I went to restart my truck and the seafoam stuff was all over the engine block so it started a little rough, but blew out a bit after a brief drive. Came to work today and it is running like a champ. Time will tell but no stalling and no reving the engine to prevent it either.
Reply With Quote
  #23  
Old November 15th, 2011, 10:14 AM
waveridin1959's Avatar
waveridin1959
Status: Offline
Brian Jones
1995 D-90 ST #2892
Member
 
Join Date: Feb 2004
Location: Raleigh, NC
Posts: 1,132
Registry
I forgot to tell you that the seafoam will make the truck run like crap at first and that you should have been in a well ventilated area. You probably should look to install new plugs soon and some good wires to ensure you continue to have a clean burn. I had the worst idle for the longest time and it took a couple steppers and carbon cleanup to solve it.
__________________
1995 Defender ST
1996 Discovery SE7
2008 LR3 HSE - Wife's


“Human sacrifice, dogs and cats living together… mass hysteria!”
Reply With Quote
Sponsored Links
Advertisement
 
  #24  
Old November 15th, 2011, 11:46 AM
RickM
Status: Offline
Rick Mabus
95 D-90 ST
Member
 
Join Date: Aug 2004
Location: Dallas, tx, Dallas
Posts: 330
I am thinking new plugs and wires anyway so I appreciate your input. I actually think my truck is driving better after swapping the stepper.
Reply With Quote
  #25  
Old November 15th, 2011, 12:39 PM
rover4x4's Avatar
rover4x4
Status: Offline
Phillip
1995 SW #487/500
Member
 
Join Date: Sep 2003
Location: The Old North State
Posts: 7,526
Registry
Id change the oil also drive it like you stole it
__________________
Poor gas mileage gets you to the best places on earth
Reply With Quote
  #26  
Old November 15th, 2011, 05:37 PM
RickM
Status: Offline
Rick Mabus
95 D-90 ST
Member
 
Join Date: Aug 2004
Location: Dallas, tx, Dallas
Posts: 330
Your kidding right. Just changed the oil about two years ago.
Reply With Quote
  #27  
Old December 6th, 2011, 03:26 PM
RickM
Status: Offline
Rick Mabus
95 D-90 ST
Member
 
Join Date: Aug 2004
Location: Dallas, tx, Dallas
Posts: 330
Its back and stranger than ever. I replaced my stepper and cleaned out the air system a few weeks ago and my truck had been driving great, that is until this past weekend. This is what it is doing.

It will idle then die.
Now it will not want to restart, almost immediately draining the battery.
Let it sit a bit and then it will fire.
I noticed while driving that it will get a tad bit rough in how it runs, but this not consistent, nor is it predictable.

Note I had replaced the fuel pump recently, but did not replace the fuel system relay. I am going to re-clean the stepper and air systems also.

Any pointers would be great.

RickM
Reply With Quote
  #28  
Old December 6th, 2011, 05:02 PM
sonoronos's Avatar
sonoronos
Status: Offline
Ed
None
Member
 
Join Date: May 2010
Location: Arlington, VA
Posts: 5,543
Registry
Sounds like it is a bad relay. By "bad" I mean "fails when hot". Letting it sit will cool it off, obviously. In the bad old days, resistance in the relay would cause it to overheat internally.

Did you turn on the heater recently?
Reply With Quote
  #29  
Old December 7th, 2011, 11:07 AM
RickM
Status: Offline
Rick Mabus
95 D-90 ST
Member
 
Join Date: Aug 2004
Location: Dallas, tx, Dallas
Posts: 330
I am thinking you might be right about the relay in general but maybe not entirely. I mean this with all due respect. So here is where my head is at on this. I drove it Saturday and it was warm and at idle when it failed. When it stalled it cooled for maybe just a few seconds and all was ok. Maybe it was on its last leg at that point. When driving it Monday when it failed I had just started it and driven about .5 miles, and it was really cold out. When I went to start it yesterday it was really cold, started and ran for about 30 seconds and died. Today it would not start at all for a long long time, then it fired but died almost instantly and I gave up. I did not replace the relay when I replaced the fuel pump but I did buy one. Where is the relay (which is why I did not replace it). I figure that is an easy fix so I will give it a go and then see from there.
Reply With Quote
  #30  
Old December 25th, 2011, 10:29 AM
Keebler's Avatar
Keebler
Status: Offline
Kenneth Elliott
1994 D90 AA yellow (NAS)
Member
 
Join Date: Dec 2011
Location: Windermere Fl, USA
Posts: 47
Registry
The speedo update is interesting...
is that applicable to a 94?
Reply With Quote
  #31  
Old December 29th, 2011, 11:24 PM
RickM
Status: Offline
Rick Mabus
95 D-90 ST
Member
 
Join Date: Aug 2004
Location: Dallas, tx, Dallas
Posts: 330
I am not sure what you are referring to on the speedo, but my issues turned out to be electrical. I flipped the coil, did some magic on the coil to d-cap wire and have not had an issue since. I might try and up my idle a bit as I also changed my spark plub wires and plugs, but all is great now.
Reply With Quote
  #32  
Old January 15th, 2014, 10:23 AM
sro
Status: Offline
Sam Odio
2008 LR2
Member
 
Join Date: Aug 2012
Location: San Francisco
Posts: 237
Registry
Quote:
Originally Posted by rijosho View Post
Is your oil light popping on?
I'm pulling up an old thread here but Josh - can you explain what you mean when you ask if the oil light is popping on?

My vehicle almost stalled last night at a stop sign. I revved the engine and it was fine. A few minutes later it stalled when I was rolling into a parking spot. Both times the oil light would flicker...
Reply With Quote
  #33  
Old January 15th, 2014, 11:16 AM
Grover's Avatar
Grover
Status: Offline
Mike
Birmabright Bread Box/Swagger Wagon
Member
 
Join Date: Dec 2005
Location: Cincinnati, Ohio
Posts: 1,857
Registry
It's flickering because the engine rpm is so low it causes the low oil pressure. The oil pump is driven by the cam shaft, which is driven by the crank shaft.
Whenever the engine is near stalling the oil light will flicker.
Reply With Quote
  #34  
Old January 15th, 2014, 06:06 PM
Keebler's Avatar
Keebler
Status: Offline
Kenneth Elliott
1994 D90 AA yellow (NAS)
Member
 
Join Date: Dec 2011
Location: Windermere Fl, USA
Posts: 47
Registry
If you want to diag your stalling issue you should slow the vehicle while in gear (4th or direct drive works pretty well) to 750-900 RPMs for a few seconds. If at that point you press the clutch pedal and the idle works correctly you should look at your VVS or speed transducer. What is happening in this scenario is that the ecm is telling the stepper motor to kick in due to the low RPM. This SHOULD happen when the vehicles MPH is slowing no matter what the RPM is.
__________________
-Ryan-
Reply With Quote
  #35  
Old January 15th, 2014, 09:18 PM
leastonce's Avatar
leastonce
Status: Offline
Jason England
D-90 White 95 SW #65
Site Team
 
Join Date: Jul 2009
Location: NYC
Posts: 6,078
Registry
Quote:
Originally Posted by Keebler View Post
If you want to diag your stalling issue you should slow the vehicle while in gear (4th or direct drive works pretty well) to 750-900 RPMs for a few seconds. If at that point you press the clutch pedal and the idle works correctly you should look at your VVS or speed transducer. What is happening in this scenario is that the ecm is telling the stepper motor to kick in due to the low RPM. This SHOULD happen when the vehicles MPH is slowing no matter what the RPM is.
Most likely is Idle control valve on the plenum is sticky and needs a good clean. This is a really common fault on these trucks.

It would be unlikely that you'd have an intermittent fault on the VSS or speed transducer due to the very simple nature of their construction.
__________________
Quote:
Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
Car Camping Collective founding member and Chief Executive Officer
Cat Camping Collective founding member and Chief Executive Officer
Reply With Quote
  #36  
Old January 15th, 2014, 09:40 PM
Keebler's Avatar
Keebler
Status: Offline
Kenneth Elliott
1994 D90 AA yellow (NAS)
Member
 
Join Date: Dec 2011
Location: Windermere Fl, USA
Posts: 47
Registry
That is a very good point. I should have mentioned I had already replaced my Stepper Motor. You may also want to check your Injectors if the stream isn’t misting properly it can also cause issues.
__________________
-Ryan-
Reply With Quote
  #37  
Old January 17th, 2014, 07:30 PM
sro
Status: Offline
Sam Odio
2008 LR2
Member
 
Join Date: Aug 2012
Location: San Francisco
Posts: 237
Registry
Hm, well after stalling once (back when I posted on the 15th) the issue went away so I figured I'd just clean the idle control valve when I have some free time and not worry about it.

However today the truck started, ran for about 60 seconds, and then stalled when I was backing up. Now it won't start at all. I had to get to a meeting so I winched myself into a parking spot and left it there (!!!).

Any ideas what's going on? I'll be trying to diagnose the issue tonight.

I just cleaned my K&N filter last week. I thought I was conservative with the oil (as I know that can mess stuff up) but perhaps the oil got on something and is causing the issue?
Reply With Quote
  #38  
Old January 17th, 2014, 07:51 PM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,248
Registry
Not reading the whole thing. Did you fix the speed transducer? Without one you will get weird intermittent stalling. There are two idle modes. One for moving and one stopped. When the ecu lose the vss it randomly decides which mode. If it is in the moving mode when you stop it will struggle and sometimes stall.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #39  
Old January 17th, 2014, 09:13 PM
Grover's Avatar
Grover
Status: Offline
Mike
Birmabright Bread Box/Swagger Wagon
Member
 
Join Date: Dec 2005
Location: Cincinnati, Ohio
Posts: 1,857
Registry
Check the ignition module and all ignition connections.
Reply With Quote
  #40  
Old January 17th, 2014, 09:40 PM
rover4x4's Avatar
rover4x4
Status: Offline
Phillip
1995 SW #487/500
Member
 
Join Date: Sep 2003
Location: The Old North State
Posts: 7,526
Registry
throw the k&n filter in the trash
__________________
Poor gas mileage gets you to the best places on earth
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Thread Tools

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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Random & Intermittent Fuel? Problem popeohana Defender Technical Discussions 2 July 18th, 2005 02:47 AM
stalling bjenk Defender Technical Discussions 5 May 7th, 2005 12:56 AM
Stalling RR? headdamage Defender Technical Discussions 5 March 20th, 2005 12:29 AM
Stalling problem and fault codes James Defender Technical Discussions 5 July 22nd, 2004 07:29 PM
Why is my D90 stalling? JRowe Defender Technical Discussions 4 November 10th, 2003 04:17 PM


All times are GMT -5. The time now is 08:28 AM.


Copyright