Defender died, will start but dies after idles - Defender Source
Defender Source  

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

Join the Defender Source Community Today
Reply
 
Thread Tools
  #1  
Old May 16th, 2016, 07:02 PM
ymc226
Status: Offline
Lawrence
1995 D90 SW NAS
Member
 
Join Date: May 2014
Location: Princeton, NJ, USA
Posts: 142
Defender died, will start but dies after idles

Truck running fine. Will start so not a battery problem but won't keep on running unless the gas is continuously pressed. It starts repeatedly but always dies.
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old May 16th, 2016, 07:58 PM
carlosz's Avatar
carlosz
Status: Offline
Carlos
frank stein "frankie" in action RIP
Member
 
Join Date: Jun 2006
Location: east coast
Posts: 869
Registry
so many variables its difficult to pinpoint.
air filterer fuel filter blockage, low fuel pressure, aic valve, timing plugs tune up air leaks, hoses, mae, oxygen sensors ...so much more...
Reply With Quote
Sponsored Links
Advertisement
 
  #3  
Old May 16th, 2016, 10:29 PM
ron's Avatar
ron
Status: Offline
Ron
1994 NAS Defender 90
Member
 
Join Date: Oct 2003
Location: Harwichport MA
Posts: 4,810
Maf>>>>>>>>>>>
__________________
no thanks whatever I tell you, you will low ball me
I would rather keep the parts in storage
good luck with your search
Reply With Quote
  #4  
Old May 17th, 2016, 01:11 AM
D90Overkill's Avatar
D90Overkill
Status: Online
David Frank
1995 ST #2615
Member
 
Join Date: Jan 2008
Location: Napa, CA. United States
Posts: 3,986
Registry
Agreed. $5 bucks says it's the MAF, throttle body, or stepper (IACV)

Sputters? Tach bobs a bit under 650 and then quits? Been there. Two different $8 cans of spray cleaners and 10 minutes and you should be golden. If not, $5 should buy you a pretty decent beer or two, to drink while you cross those three culprits off your list, and scratch your head again. ;-)
Reply With Quote
  #5  
Old September 30th, 2016, 09:25 AM
ymc226
Status: Offline
Lawrence
1995 D90 SW NAS
Member
 
Join Date: May 2014
Location: Princeton, NJ, USA
Posts: 142
Thanks all, I had the throttle body cleaned when I initially posted in May and all was well until last night when it just sputtered and died as I pulled into my driveway. It started again with some difficulty and died again.

This time, I'll clean the throttle body again (had it done by the local mechanic) but I'll also look into the MAF. I know on the Porsche, the MAF can be cleaned but on a 95 NAS V8, can it be cleaned or is it better to replace?

Looking at the Rovers North, is the MAF in the Defender not a small, low cost part? For the 97 Defender it is around $1200.
Reply With Quote
  #6  
Old September 30th, 2016, 09:41 AM
AdamSanta85's Avatar
AdamSanta85
Status: Offline
Adam
1991 D90 SW
Member
 
Join Date: Apr 2016
Location: Sayville, NY
Posts: 661
Registry
Quote:
Originally Posted by ymc226 View Post
Looking at the Rovers North, is the MAF in the Defender not a small, low cost part? For the 97 Defender it is around $1200.
This should do it I think. Should be PN ERR5198. $86 for aftermarket vs $1500 for OEM. I would try the aftermarket. Delivery from this supplier usually takes about 4 business days to east coast.

https://www.lrdirect.com/ERR5198-Air-Flow-Meter-3.9Efi/
Reply With Quote
  #7  
Old September 30th, 2016, 10:15 AM
One Ten's Avatar
One Ten
Status: Offline
Sam
1997 NAS110
Member
 
Join Date: Jan 2011
Location: Sin City, USA
Posts: 1,158
I had a problem like that. It turned out to be a vacuum leak. My brother had a special machine that pumped in smoke so you could see where the leak is. I resealed the upper plenum to the lower and it was fixed.
Reply With Quote
  #8  
Old September 30th, 2016, 10:20 AM
lrna04's Avatar
lrna04
Status: Offline
Michael
1994 D90
Member
 
Join Date: Feb 2011
Location: Beverly ma
Posts: 57
Registry
Check the code
Reply With Quote
  #9  
Old September 30th, 2016, 10:25 AM
ymc226
Status: Offline
Lawrence
1995 D90 SW NAS
Member
 
Join Date: May 2014
Location: Princeton, NJ, USA
Posts: 142
Quote:
Originally Posted by AdamSanta85 View Post
This should do it I think. Should be PN ERR5198. $86 for aftermarket vs $1500 for OEM. I would try the aftermarket. Delivery from this supplier usually takes about 4 business days to east coast.

https://www.lrdirect.com/ERR5198-Air-Flow-Meter-3.9Efi/
Thanks Adam, just ordered the cheap Brit Part. Will clean the throttle this weekend and if still a problem, replace the MAF when it arrives. Is it plug and play or is there a reprogramming of the truck that needs to be done?


$86 vs $1200, sounds like I'm buying a Persian rug at full retail if I did buy the LR part.
Reply With Quote
  #10  
Old September 30th, 2016, 10:39 AM
JSBriggs's Avatar
JSBriggs
Status: Offline
Jeff Briggs
Antarctic Blue Super Sports Wagon
Site Team
 
Join Date: Nov 2003
Location: Auburn CA
Posts: 12,292
Registry
It still sounds like the stepper motor (Idle Air Control Valve) Was that replaced. You can get an Astro van one at Vato Zone for $20 or so.

-Jeff
__________________
Reply With Quote
  #11  
Old September 30th, 2016, 10:43 AM
ymc226
Status: Offline
Lawrence
1995 D90 SW NAS
Member
 
Join Date: May 2014
Location: Princeton, NJ, USA
Posts: 142
Quote:
Originally Posted by JSBriggs View Post
It still sounds like the stepper motor (Idle Air Control Valve) Was that replaced. You can get an Astro van one at Vato Zone for $20 or so.

-Jeff
I'll get that too.

For all those that do their own wrenching, would changing the stepper motor and MAF sensor be easy in terms of technical difficulty and accessibility?

I did change out the plugs on my 911 which I considered a great accomplishment. If this is in the simple category, I'd like to tackle it myself.

Thanks Jeff: I found this at DiscoWeb:part #s are 25527077 for the ACDelco and 779-10003 for the GP Sorenson. $27 at Advance Auto. works for the 3.9 or 4.2 of course.
Reply With Quote
  #12  
Old September 30th, 2016, 11:19 AM
JSBriggs's Avatar
JSBriggs
Status: Offline
Jeff Briggs
Antarctic Blue Super Sports Wagon
Site Team
 
Join Date: Nov 2003
Location: Auburn CA
Posts: 12,292
Registry
Yes both are easy to change. Id do the stepper first. The purpose of it is to allow air into the intake to allow it to run at idle/closed throttle. Without it the engine is choked off.

-Jeff
__________________
Reply With Quote
  #13  
Old September 30th, 2016, 11:30 AM
Red90's Avatar
Red90
Status: Online
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 8,058
Registry
Test things. Don't be a part swapper. The system is pretty simple and you can test each item to figure out what is wrong. Grab the workshop manual and go through the troubleshooting.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #14  
Old September 30th, 2016, 08:30 PM
ymc226
Status: Offline
Lawrence
1995 D90 SW NAS
Member
 
Join Date: May 2014
Location: Princeton, NJ, USA
Posts: 142
Quote:
Originally Posted by Red90 View Post
Test things. Don't be a part swapper. The system is pretty simple and you can test each item to figure out what is wrong. Grab the workshop manual and go through the troubleshooting.
Thanks John.

I looked at the workshop manual on the CD that came with the truck when I bought it but it the V8 engine it describes is carburated so it is way out of date.

I just bought the NAS specific manual in binder form from Rovers North but will take a week or so to get here.

Is there an online version of the NAS specific Defender workshop manual that I can download from the internet as I'd like to get my truck back on the road sooner than later. I'm going to get the stepper motor tomorrow and clean up the throttle body as well and would like the appropriate work shop manual for instruction.
Reply With Quote
  #15  
Old September 30th, 2016, 08:34 PM
Red90's Avatar
Red90
Status: Online
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 8,058
Registry
Try the RRC Fuel Injection section: http://www.landroverweb.com/Pdf-file...-Injection.pdf I think it may be better to use. The NAS manuals are online somewhere as well, but I think they skip over a lot of the manual checks and assume you have a computer. If you are going to have this long time, then it would be worth getting a cable and setting up Rovergauge on a laptop. It makes life easier.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #16  
Old September 30th, 2016, 08:38 PM
Red90's Avatar
Red90
Status: Online
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 8,058
Registry
Edit, wrong one...
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #17  
Old September 30th, 2016, 08:49 PM
JSBriggs's Avatar
JSBriggs
Status: Offline
Jeff Briggs
Antarctic Blue Super Sports Wagon
Site Team
 
Join Date: Nov 2003
Location: Auburn CA
Posts: 12,292
Registry
Charles has some on his site. http://lhsw.com/d90/

As does Lav. https://www.seriesdefender.com/manuals.html

-Jeff
__________________
Reply With Quote
  #18  
Old September 30th, 2016, 09:50 PM
ymc226
Status: Offline
Lawrence
1995 D90 SW NAS
Member
 
Join Date: May 2014
Location: Princeton, NJ, USA
Posts: 142
Quote:
Originally Posted by Red90 View Post
Try the RRC Fuel Injection section: http://www.landroverweb.com/Pdf-file...-Injection.pdf I think it may be better to use. The NAS manuals are online somewhere as well, but I think they skip over a lot of the manual checks and assume you have a computer. If you are going to have this long time, then it would be worth getting a cable and setting up Rovergauge on a laptop. It makes life easier.
Quote:
Originally Posted by JSBriggs View Post
Charles has some on his site. Untitled Document

As does Lav. https://www.seriesdefender.com/manuals.html

-Jeff
Thank you very much John and Jeff. I looked at these PDF's and they should work for me. Still want to get the NAS workshop manuals as they may be helpful.

Regards,

Lawrence
Reply With Quote
  #19  
Old October 2nd, 2016, 03:24 PM
ymc226
Status: Offline
Lawrence
1995 D90 SW NAS
Member
 
Join Date: May 2014
Location: Princeton, NJ, USA
Posts: 142
Thanks all. I just changed the idle air control valve (from Pep Boys instead of LR thanks to Jeff) and air filter. Still waiting for the Britpart MAF from the UK but the truck idling is very smooth. Had it idle for 15 minutes and no shut off. Very, very happy. Can't wait to tell the wife as she was hinting the Defender was causing too much trouble and needed to be sold. That was my reason for trying DIY and not adding any unneeded cost to the situation.

What do you think? Is the air filter dirty enough to cause idling issues?
Attached Thumbnails
Click image for larger version

Name:	IMG_0597.jpg
Views:	17
Size:	106.0 KB
ID:	158883  
Reply With Quote
  #20  
Old October 2nd, 2016, 03:45 PM
JSBriggs's Avatar
JSBriggs
Status: Offline
Jeff Briggs
Antarctic Blue Super Sports Wagon
Site Team
 
Join Date: Nov 2003
Location: Auburn CA
Posts: 12,292
Registry
Quote:
Originally Posted by ymc226 View Post
Thanks all. I just changed the idle air control valve (from Pep Boys instead of LR thanks to Jeff) and air filter. Still waiting for the Britpart MAF from the UK but the truck idling is very smooth. Had it idle for 15 minutes and no shut off. Very, very happy. Can't wait to tell the wife as she was hinting the Defender was causing too much trouble and needed to be sold. That was my reason for trying DIY and not adding any unneeded cost to the situation.

What do you think? Is the air filter dirty enough to cause idling issues?
Sound like its solved. While the filter is dirty Id say it was the IACV. If you are curious, put the old filter back in, i bet it still runs just as smoothly. If you are still curious, put the new filter in with the old stepper. I bet it chokes off again.

-Jeff
__________________
Reply With Quote
Sponsored Links
Advertisement
 
Reply

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

Tags
defender, idle, start

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
now idles high?? kevincdoyle Defender Technical Discussions 14 September 21st, 2015 09:52 PM
200tdi Replaced nozzles idles rough Tribe Defender Technical Discussions 12 August 27th, 2015 09:48 AM
Won't start after after torrential downpour?! jijalicious Defender Technical Discussions 51 November 10th, 2011 12:17 PM
Jaguar Land Rover CEO Polites dies at 60 after illness 94Rover Misc. Chit-Chat 5 April 21st, 2008 09:24 AM
Dies after start benh Defender Technical Discussions 2 May 20th, 2004 03:04 AM


All times are GMT -5. The time now is 06:52 PM.


Copyright