Sudden decrease / loss of power, bucking, stalling, etc - Page 2 - Defender Source
Defender Source  

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


Reply
 
Thread Tools
  #21  
Old January 24th, 2013, 08:27 AM
nathanwind's Avatar
nathanwind
Status: Offline
Jason Lavender
88-90-127-LR3
D-90 Source Vendor
 
Join Date: Jan 2008
Location: Saratoga NY
Posts: 8,745
Registry
Quote:
Originally Posted by 130Tdi View Post
sounds like water in the fuel
I'm on my 2nd tank of gas, both from Shell stations (the first from the same station I get gas from 90% of the time).

But I'll put a little of the Heet stuff in there when I change the filter again just to be sure.
__________________
Jason Lavender
'71 Series IIA
'88 127 #F96 DKN
'94 90 NAS #324
'06 LR3 HSE

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

(10% discount for DSource members, use coupon code "D90")

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
Sponsored Links
Advertisement
 
  #22  
Old January 24th, 2013, 08:58 AM
rovertek's Avatar
rovertek
Status: Offline
chris
D130, 2001+99 p38
Member
 
Join Date: Jul 2012
Location: Long Island , New York
Posts: 500
don't drive yourself nuts.. ..Start with the basics ...check battery connections , do battery load test ,do alternator load test and this happens when the truck is at operating temp and when under load ... it is very possible the fuel pump is braking down after a while it heats up and can not sustain the pressure required ... 1st step ck fuel pressure tape the gauge to the window and go for a ride watch it when the truck begins to loose power that will rule out fuel pump , Then move on to the ignition again when the module heats up it starts to brake down and will not trigger the coil ...get your self a inline tester and a old lead make a long lead from the plug to tester hang out the fender so you can see it flashing then go for a ride .... take your time and you'll find the problem .. good luck i'm always available for ?s
__________________
No Mall crawler here
Reply With Quote
  #23  
Old January 24th, 2013, 12:26 PM
flippedrover's Avatar
flippedrover
Status: Offline
Tyler
'94 D-90
Member
 
Join Date: Dec 2003
Location: Ashburn,va
Posts: 3,125
Partially clogged cat?
__________________
Can't you feel 'em circlin' (closin'in) honey?
Can't you feel 'em swimmin' around?
You got fins to the left, fins to the right,
and you're the only bait in town.
You got fins to the left, fins to the right,
and you're the only girl in town.

Jimmy Buffett


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
Sponsored Links
Advertisement
 
  #24  
Old January 24th, 2013, 03:45 PM
Rugbier's Avatar
Rugbier
Status: Offline
Gustavo
110 Tdi - 110 N/A - D3 HSE - RRS SC
Member
 
Join Date: Jul 2008
Location: Peoples Republic of Marylandistan
Posts: 5,884
Registry
My money is on

A - Cats
B - O2 sensor


My red did it and was the cats
My Di did it and were the before sensors
__________________
NO SIGNATURE
Reply With Quote
  #25  
Old January 24th, 2013, 05:52 PM
down_shift's Avatar
down_shift
Status: Offline
Russell
94' D90 ST & 06' LR3
Member
 
Join Date: Sep 2011
Location: Leesburg, VA
Posts: 4,118
Registry
You would get that tell tail coffee can sound if the cat(s) were bad and I don't think it would be interment or bad enough to make the motor stop. Easy way to check the O2 sensors and/or bad cat, compare the inlet temperatures. If one cat is smoking hot (say north of 500), the upstream O2 sensor is bad and causing that bank to run too rich. If one cat is really cool (say south of 375), that cat is partially blocked.
Reply With Quote
  #26  
Old January 24th, 2013, 06:06 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
were you able to try the carb cleaner?
__________________
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
  #27  
Old January 24th, 2013, 06:10 PM
nathanwind's Avatar
nathanwind
Status: Offline
Jason Lavender
88-90-127-LR3
D-90 Source Vendor
 
Join Date: Jan 2008
Location: Saratoga NY
Posts: 8,745
Registry
Quote:
Originally Posted by leastonce View Post
were you able to try the carb cleaner?
Got sidetracked with another car project today, needed to get that wrapped up and out of the garage so I could get the 90 back in. Maybe tomorrow or this weekend I'll be able to start the diagnostic. I will definitely keep everyone posted on my tests/progress.

The real pisser here is so far it's seemed to take about an hour or so before the symptoms would "appear" (which, so far rovertek's explanation does sit well with me). But I'm going to rule out the simple stuff first (air leak, swap ECU, etc) and then progress.

The other kicker is they put down about 1/2" of salt around here (for 1/2" of snow), so I've kind of got to let that stuff get off the roads before I take the 90 out (I'm a little bit of a bitch when it comes to salt...as Barry said, I drive the "go anywhere vehicle that I can't drive in winter").

The ultimate irony of course is that my sh*tbox has tons of dents/etc, but no rust and I'll take some trail rash over rust any day of the week.
__________________
Jason Lavender
'71 Series IIA
'88 127 #F96 DKN
'94 90 NAS #324
'06 LR3 HSE

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

(10% discount for DSource members, use coupon code "D90")

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #28  
Old January 25th, 2013, 12:40 PM
flippedrover's Avatar
flippedrover
Status: Offline
Tyler
'94 D-90
Member
 
Join Date: Dec 2003
Location: Ashburn,va
Posts: 3,125
Quote:
Originally Posted by down_shift View Post
You would get that tell tail coffee can sound if the cat(s) were bad and I don't think it would be interment or bad enough to make the motor stop. Easy way to check the O2 sensors and/or bad cat, compare the inlet temperatures. If one cat is smoking hot (say north of 500), the upstream O2 sensor is bad and causing that bank to run too rich. If one cat is really cool (say south of 375), that cat is partially blocked.
When my friends cats went on her car a couple years ago there was no noise. It would loose power when you steeped on th gas.
__________________
Can't you feel 'em circlin' (closin'in) honey?
Can't you feel 'em swimmin' around?
You got fins to the left, fins to the right,
and you're the only bait in town.
You got fins to the left, fins to the right,
and you're the only girl in town.

Jimmy Buffett


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #29  
Old January 25th, 2013, 01:56 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
unless this is a intermittent blockage ... it wouldn't cause bucking ...
__________________
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
  #30  
Old January 25th, 2013, 02:48 PM
LRover's Avatar
LRover
Status: Offline
J. Michael McCaig
D90 ST, LR110, Series IIa, RRC
Member
 
Join Date: Oct 2003
Location: VA
Posts: 479
It's already been mentioned but I would look seriously at your ignition amplifier. If takes an hour for the symptoms to appear that would be just long enough for heat to affect the amplifier. I've had the same thing happen to me. It didn't just fail and not start but would cause a loss of power etc once it got hot.
Reply With Quote
  #31  
Old January 31st, 2013, 05:06 PM
nathanwind's Avatar
nathanwind
Status: Offline
Jason Lavender
88-90-127-LR3
D-90 Source Vendor
 
Join Date: Jan 2008
Location: Saratoga NY
Posts: 8,745
Registry
Just an update, but today I:
1) changed the fuel filter (Napa Gold #3481)
2) cleaned the Mass Air Flow (MAF) sensor
3) added a bottle of Heet Iso Antifreeze fuel treatment (in case there was water in the fuel, but doubt it)

Quick test drive no issues, but honestly it can take anywhere from 20-60 minutes for the symptoms to come. Will try to do a longer drive tonight or tomorrow. Also scored an ECU from Galpin, so that will be next on the list if the symptoms persist.

After that, will try other items suggested (Inertia Switch, Ignition amplifier module, VSS, and then last but not least the fuel pump...which I'm going to get a Carter pump P74006 and try to rebuild mine using that pump).
__________________
Jason Lavender
'71 Series IIA
'88 127 #F96 DKN
'94 90 NAS #324
'06 LR3 HSE

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

(10% discount for DSource members, use coupon code "D90")

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #32  
Old January 31st, 2013, 09:05 PM
wantone
Status: Offline
Rick Thompson
94 ST #1222
Member
 
Join Date: Aug 2009
Location: Omaha
Posts: 315
Registry
Jason,

I recently had the same issues on my 94 nas. Changed alt, relays, ignition mod, stepper motor, fuel filter & had no luck really. Was at the point where i was just gonna carb the damn thing. Then i put a new gound cable from napa, & ran it to a bolt on the cross member, & one fron the block to the frame, & voila! Fixed! Cost me $35 for the cable.
Reply With Quote
  #33  
Old January 31st, 2013, 09:44 PM
nathanwind's Avatar
nathanwind
Status: Offline
Jason Lavender
88-90-127-LR3
D-90 Source Vendor
 
Join Date: Jan 2008
Location: Saratoga NY
Posts: 8,745
Registry
Quote:
Originally Posted by wantone View Post
Jason,

I recently had the same issues on my 94 nas. Changed alt, relays, ignition mod, stepper motor, fuel filter & had no luck really. Was at the point where i was just gonna carb the damn thing. Then i put a new gound cable from napa, & ran it to a bolt on the cross member, & one fron the block to the frame, & voila! Fixed! Cost me $35 for the cable.
Not a bad idea, I changed the ground strap on the 110 awhile back...I'll check it on the 90 tomorrow and if it looks at all suspect I'll swap it out.
__________________
Jason Lavender
'71 Series IIA
'88 127 #F96 DKN
'94 90 NAS #324
'06 LR3 HSE

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

(10% discount for DSource members, use coupon code "D90")

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #34  
Old February 1st, 2013, 02:10 PM
nathanwind's Avatar
nathanwind
Status: Offline
Jason Lavender
88-90-127-LR3
D-90 Source Vendor
 
Join Date: Jan 2008
Location: Saratoga NY
Posts: 8,745
Registry
Quote:
Originally Posted by nathanwind View Post
Just an update, but today I:
1) changed the fuel filter (Napa Gold #3481)
2) cleaned the Mass Air Flow (MAF) sensor
3) added a bottle of Heet Iso Antifreeze fuel treatment (in case there was water in the fuel, but doubt it)

Quick test drive no issues, but honestly it can take anywhere from 20-60 minutes for the symptoms to come. Will try to do a longer drive tonight or tomorrow. Also scored an ECU from Galpin, so that will be next on the list if the symptoms persist.

After that, will try other items suggested (Inertia Switch, Ignition amplifier module, VSS, and then last but not least the fuel pump...which I'm going to get a Carter pump P74006 and try to rebuild mine using that pump).
Stalled 3 times on the 20 minute test drive, first one had a strong "fuel smell". The way it's acting still very strongly suspecting the fuel pump, but next round going to plug in the new ECU and grab an Inertia Switch and Ignition Amplifier Module from Galpin tomorrow morning (hopefully) to test those first.
__________________
Jason Lavender
'71 Series IIA
'88 127 #F96 DKN
'94 90 NAS #324
'06 LR3 HSE

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

(10% discount for DSource members, use coupon code "D90")

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #35  
Old February 1st, 2013, 02:51 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 nathanwind View Post
Stalled 3 times on the 20 minute test drive, first one had a strong "fuel smell". The way it's acting still very strongly suspecting the fuel pump, but next round going to plug in the new ECU and grab an Inertia Switch and Ignition Amplifier Module from Galpin tomorrow morning (hopefully) to test those first.
sounds like an air leak to me ... did you do the carb cleaner thing?
__________________
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 February 1st, 2013, 03:57 PM
nathanwind's Avatar
nathanwind
Status: Offline
Jason Lavender
88-90-127-LR3
D-90 Source Vendor
 
Join Date: Jan 2008
Location: Saratoga NY
Posts: 8,745
Registry
Quote:
Originally Posted by leastonce View Post
sounds like an air leak to me ... did you do the carb cleaner thing?
Crikey I knew I was forgetting to test something. Plenum looked good when I remove to clean MAF. I'm guessing hit around there with the carb cleaner - where else?
__________________
Jason Lavender
'71 Series IIA
'88 127 #F96 DKN
'94 90 NAS #324
'06 LR3 HSE

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

(10% discount for DSource members, use coupon code "D90")

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #37  
Old February 1st, 2013, 04:54 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 nathanwind View Post
Crikey I knew I was forgetting to test something. Plenum looked good when I remove to clean MAF. I'm guessing hit around there with the carb cleaner - where else?
the pipe that connects the maf to plenum is where I had problems ... it kept coming loose.

The pipework on the side of the plenum around the idle valve is also worth looking at.
__________________
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
  #38  
Old February 1st, 2013, 05:12 PM
1of40's Avatar
1of40
Status: Offline
1of40
NAS 97SW & 83 One Ten Tdi
Member
 
Join Date: Dec 2003
Location: Potomac Falls & Wintergreen, Virginia
Posts: 6,087
Registry
Jason, is the fuel gauge working properly?
Reply With Quote
  #39  
Old February 4th, 2013, 08:01 PM
nathanwind's Avatar
nathanwind
Status: Offline
Jason Lavender
88-90-127-LR3
D-90 Source Vendor
 
Join Date: Jan 2008
Location: Saratoga NY
Posts: 8,745
Registry
Quote:
Originally Posted by 1of40 View Post
Jason, is the fuel gauge working properly?
Yes fuel gauge is working properly.

Became convinced it was the pump (as when the tank was less full the issue became more prominent...assuming that as the pump was not being cooled since it wasn't submersed and was amplifying the issue). Anyhow, decided to cut right to the chase and pull the pump - with 97k on the truck, it was probably due anyhow.

Tank is down, pump is out. Picked up the Carter pump (and new fuel sock/strainer at Napa), plan to finish replacement tomorrow.
Attached Thumbnails
Click image for larger version

Name:	image-4105307560.jpg
Views:	102
Size:	520.4 KB
ID:	65734   Click image for larger version

Name:	image-3397237413.jpg
Views:	103
Size:	543.6 KB
ID:	65735  

__________________
Jason Lavender
'71 Series IIA
'88 127 #F96 DKN
'94 90 NAS #324
'06 LR3 HSE

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

(10% discount for DSource members, use coupon code "D90")

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #40  
Old February 4th, 2013, 08:45 PM
Bill Larson's Avatar
Bill Larson
Status: Offline
Bill Larson
97 D90 SW
Member
 
Join Date: Jul 2010
Location: AUS
Posts: 6,563
Very Nice! I hope you didnt find the junk in your tank that I found in mine!
Attached Thumbnails
Click image for larger version

Name:	IMG-20120708-00356.jpg
Views:	98
Size:	49.0 KB
ID:	65737   Click image for larger version

Name:	IMG-20120708-00355.jpg
Views:	115
Size:	81.9 KB
ID:	65738  

Click image for larger version

Name:	IMG-20120708-00357.jpg
Views:	104
Size:	79.9 KB
ID:	65739   Click image for larger version

Name:	IMG-20120708-00358.jpg
Views:	109
Size:	79.9 KB
ID:	65740  

Reply With Quote
Reply

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

Tags
ecr

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
Strange temporary loss of Power ipgregory Defender Technical Discussions 14 February 16th, 2011 02:33 AM
odd power loss 300 tdi discotdi Defender Technical Discussions 7 August 13th, 2010 07:31 AM
Loss of power Leadfoot Defender Technical Discussions 4 January 28th, 2005 03:36 PM
Strange loss of power... OCD90 Defender Technical Discussions 3 September 7th, 2004 05:32 PM
Power loss and popping! TwisteD90 Defender Technical Discussions 40 May 30th, 2004 12:45 PM


All times are GMT -5. The time now is 12:05 AM.


Copyright