Stalled like running out of fuel - Defender Source
Defender Source  

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


Reply
 
Thread Tools
  #1  
Old August 17th, 2004, 07:21 PM
cgalpin's Avatar
cgalpin
Status: Offline
Charles Galpin
'94 D90 ST, '63 SeriesIIA
Site Team
 
Join Date: Jan 2004
Location: South Riding, VA
Posts: 11,625
Registry
Stalled like running out of fuel

Today while braking and taking a soft right turn, my defender stalled -
exactly like it would have if I was running the tank empty. I could
turn it over and it would act like it was going to start and
immediately die.

I sat for a minute contemplating my options, and then tried again - and
she started fine. I only had to drive a minute further. Lets hope the
trip home is ok.

I have a half tank of gas. Could it be dirt/water in the fuel? I'm not
even sure if this thing as a mechanical or electrical fuel pump to tell
you the truth.

I'm told the cats going bad can do this. Can someone explain what happens there - does the 02 sensor tell the computer to shut down? How can I test?

Anything else I should check for? I am planning on taking a trip to the beach this weekend - 4 hrs each way and a lot of driving in between.

thanks
charles
94 ST
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old August 17th, 2004, 07:40 PM
javelinadave
Status: Offline
-
-
Member
 
Join Date: Sep 2003
Location: -
Posts: 5,394
Could be a lot of things.
Vapor Lock
Dirty Fuel
Dirty Fuel Filter
Fuel Pump Problem
Fuel Pump Relay Problem
Fuel Pump Wiring Problem
Etc......
See if your computer threw a code. That would be the place to start. It should show something if an o2 sensor is not working. Good luck, problems like this could make a sane man crazy.
Reply With Quote
  #3  
Old August 17th, 2004, 08:17 PM
TwisteD90's Avatar
TwisteD90
Status: Offline
Yousef Hamzeh
06 RR SC, 06 LR3, 94 D90
Member
 
Join Date: Sep 2003
Location: Colorado & Kuwait
Posts: 1,862
Check your pump relay. I had the same problem and changed the fuel pump, fuel filter and it turned out to be the relay
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old August 17th, 2004, 08:20 PM
jaherring's Avatar
jaherring
Status: Offline
Jason Herring
94 D90 ST #1253
Member
 
Join Date: May 2004
Location: San Pedro, CA, USA
Posts: 582
First check the computer for a code before digging any further - it's the easiest thing to eliminate.

A plugged cat converter would probably not behave inconsistantly -- it's likely either plugged or not. If plugged, you could definitely have huge power loss -- basically, the engine can't 'exhale' so it therefore can't breathe. I don't see how that could be intermittant.

One thing I'd do right away after checking the code is toss in some fuel system dryer to eliminate the possibility of water in the tank. Then, go to a different filling station than the last one you filled at and top off the tank (these two things could mitigate bad/contaminated fuel).

Your fuel pump is electric - only fairly early fuel injection systems used mechanical pumps. Fuel injection requires much higher pressure in the line than a carb does. If you get into a situation where the D stops running again you could open the line to the fuel rail and see if the pump is still pushing fuel (bring a bucket - it could get messy). Even better would be to install a small inline fuel pressure gauge (make sure you get one that's meant for fuel injection systems - higher pressure).
Reply With Quote
  #5  
Old August 17th, 2004, 08:37 PM
Nobrega
Status: Offline
Andrew Nobrega
'94 Defender 90
Member
 
Join Date: Apr 2004
Location: Toronto, Ontario, Canada
Posts: 73
I had exactly the same problem. It was inconsistent, but had the same symptoms. Changed the O2 sensor then everything was running like new.
__________________
Andrew Nobrega
Reply With Quote
  #6  
Old August 17th, 2004, 11:31 PM
cgalpin's Avatar
cgalpin
Status: Offline
Charles Galpin
'94 D90 ST, '63 SeriesIIA
Site Team
 
Join Date: Jan 2004
Location: South Riding, VA
Posts: 11,625
Registry
First off, let me apologize for not searching the forums first. I see now there are a number of related threads.

Second, and don't laugh, but how do I read the codes? I found the diagnostic box on the passenger side just above the ECU. When I turn the ignition on, I see no flashing. Not sure if I need to do anything else.

Last, I have a few data points I should have mentioned

1. she is getting poor gas mileage - about 9-10 mpg
2. It has to turn over several times before starting, but runs fine once started.

I planned to have given it a tune-up already, but the dealer pricing scared me off. I bought a oil filter, air filter, plug wires, plugs, cap and rotor for $250, and decided to keep the oil filter and return the rest. I need to find a good online source for the rest.

thanks
charles
p.s. Should the ECU be screwed down? Min just rests on a bracket, not screwed down.
Reply With Quote
  #7  
Old August 18th, 2004, 12:01 AM
evilfij's Avatar
evilfij
Status: Offline
evilfij
I have never seen a rover in person
Member
 
Join Date: Oct 2003
Location: on the internet
Posts: 14,688
Miles?

I would buy genuine rotor cap fuel filter and air filter, magnacore wires and replace all them. It sounds like you are not sure when any of this was done

I would clean the stepper motor

Odds are though the stalling is related to a sensor or electrical issue.

If it happens again, pull the O2 sensor wires off and see if it continues to happen. You can do the same with the MAF. when they are unplugged the ECU puts in a default setting.

I would guess/check (in approximate order):

Fuel pump relay
ECU relay
Ignition module (see if the update was done)
Bad coil wire
Fuel pump
MAF
TPS
ECU
O2 sensor

The crap gas mpg is inconsistent with the relays and more consistent with a bad O2 or two especailly if it is a recent decrease, if its always been that way the two issues may be unrelated.

Ron
__________________
*not legal advice*
Reply With Quote
  #8  
Old August 18th, 2004, 01:05 AM
cgalpin's Avatar
cgalpin
Status: Offline
Charles Galpin
'94 D90 ST, '63 SeriesIIA
Site Team
 
Join Date: Jan 2004
Location: South Riding, VA
Posts: 11,625
Registry
76,500 Miles. I haved only run 2.5 tanks of gas through it, so cannot comment on previous fuel economy or maintenance.

So would I have seen the led flashing on the diagnostic box if there was a code?

Recommended source for the tuneup parts other than the dealer?

I'll give her a tuneup as planned, and go through these items.

Thanks!
charles
Reply With Quote
Reply

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

Tags
fuel

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
fried fuel pump mattdh Defender Technical Discussions 2 July 13th, 2012 02:55 PM
300 Tdi Egt Q?????? Buckon37s Defender Technical Discussions 37 July 11th, 2012 11:26 AM
Fuel Pump Fuse Blows all the Time now! thug1313 Defender Technical Discussions 9 March 2nd, 2006 07:55 PM
95 won't start, possible fuel priming issue? jcasteel Defender Technical Discussions 1 March 15th, 2005 09:45 AM
Fuel Pump running PSI and deadhead PSI? RedRhinoProducts Defender Technical Discussions 0 February 27th, 2005 02:35 PM


All times are GMT -5. The time now is 11:08 PM.


Copyright