no start... ECU? - Defender Source
Defender Source  

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


Reply
 
Thread Tools
  #1  
Old August 3rd, 2010, 12:40 PM
MikeRuby
Status: Offline
Mike Ruby
'95 D90 #2523
Member
 
Join Date: Jul 2009
Location: Nantucket, MA
Posts: 69
no start... ECU?

95 3.9L

starter cranks, but engine won't fire...

fuel pump 7.5A and fuel injector 30A fuse under the hood are both fine...

replaced the two relays in passenger seatbox with local auto parts store's 30A relays (not too many parts store options on the island); no change...

Tried Ron's previous post advice about pushing the accelerator all the way to the floor for a ten second crank to ensure she's not flooded... no luck.

Starter fluid squirt allows the engine to run fine...

Seems as though the fuel injectors are not getting electrical input... So it's the ECU?

What am I missing?

Mike

cell: 508-221-7144
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old August 3rd, 2010, 01:12 PM
owen's Avatar
owen
Status: Offline
Owen Jones
Yellow`95 D90 ST #2188
Member
 
Join Date: Mar 2007
Location: Superior, Colorado
Posts: 140
Registry
Can you hear the fuel pump whirring when the ignition is turned on? If not try resetting the famous Inertia cutout under the bonnet on the top RHS of the bulhead.
__________________
"I think you need a little weatherstripping - right here..."
Reply With Quote
  #3  
Old August 3rd, 2010, 01:25 PM
Mpigapicha's Avatar
Mpigapicha
Status: Offline
phil
1995 Defender D90
Member
 
Join Date: Sep 2009
Location: New York
Posts: 326
Is this the first time happening?? check wires, plugs, coil, etc.... fuel filter?
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old August 3rd, 2010, 01:30 PM
Campbell's Avatar
Campbell
Status: Offline
Rich Campbell
06 LR3 01DII D90s sold
Member
 
Join Date: Oct 2003
Location: PA
Posts: 1,512
Registry
Are your brake lights working? All rear electrics?

Reason I ask is I had a problem with a short in the rear harness that was limiting the voltage to the fuel pump and making the truck not start or if it started it would run long.


Good luck
Reply With Quote
  #5  
Old August 3rd, 2010, 01:44 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 owen View Post
Can you hear the fuel pump whirring when the ignition is turned on? If not try resetting the famous Inertia cutout under the bonnet on the top RHS of the bulhead.
I'd second this ...
Reply With Quote
  #6  
Old August 3rd, 2010, 01:52 PM
MikeRuby
Status: Offline
Mike Ruby
'95 D90 #2523
Member
 
Join Date: Jul 2009
Location: Nantucket, MA
Posts: 69
Famous? WTF... I'm not a total dumb-arse, but cannot locate it... okay maybe I am a total...

Is it at the very top of the bulkhead... black 1.5" square, with a rubber cap on top covering a white 3/4" round plasitc?

If yes, it was not tripped... If that's not it, where is it exactly on a 95?

Many thanks guys...
Reply With Quote
  #7  
Old August 3rd, 2010, 03:34 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: 11,623
Registry
You don't say if you can hear the fuel pump or not. Also I'd get the real deal for the relays before doing anything else since the ones you got at the parts store may actually not be the right ones. You can get them overnighted from one of the vendors (AB has affordable black ones).
Reply With Quote
  #8  
Old August 3rd, 2010, 03:51 PM
rijosho's Avatar
rijosho
Status: Offline
Joshua
1995 Black ST - Rhinolined edition
Research Assistant/Eagle Eyes
 
Join Date: Apr 2009
Location: NYC
Posts: 16,557
Registry
For the silver relays I had found these a month or so ago.

http://www.defendersource.com/forum/...ad.php?t=26333
Reply With Quote
  #9  
Old August 3rd, 2010, 04:34 PM
MikeRuby
Status: Offline
Mike Ruby
'95 D90 #2523
Member
 
Join Date: Jul 2009
Location: Nantucket, MA
Posts: 69
cannot hear the fuel pump... real Bosch relays just arrived, had 'em overnighted... still not sure I've located the inertia cutout, might it be somewhere else?
Reply With Quote
  #10  
Old August 3rd, 2010, 04:43 PM
Mpigapicha's Avatar
Mpigapicha
Status: Offline
phil
1995 Defender D90
Member
 
Join Date: Sep 2009
Location: New York
Posts: 326
inertia by fuses under bonnet, behind plenum attached above firewall, under windshield..... i have a 95 as well.

I had similar (as many of us do) no start...... check main grounds, clean ALL connections, check wires and relays as people mentioned..... I never quite figured out what was causing my no starts but changed a bunch of needed stuff and voila..... it starts..... for now......
Reply With Quote
  #11  
Old August 3rd, 2010, 05:22 PM
Hans's Avatar
Hans
Status: Offline
Hans Haase
The D-90.com Lab Rat
Member
 
Join Date: Oct 2003
Location: Long Island, NY
Posts: 2,381
clean all the connections on the ignition coil, sometimes the one for the RPM feed to the ECU gets corroded.
__________________
My oil line fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
My 100k stopped odometer fix

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Brace for impact, I'm in a "modifying mood". Massive thread count inbound.
Reply With Quote
  #12  
Old August 3rd, 2010, 05:29 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
If it runs on either, it's not an ignition problem. It must not be getting fuel. Make sure the fuel pump is getting 12v, check fuel pressure.
Reply With Quote
  #13  
Old August 3rd, 2010, 05:36 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: 11,623
Registry
Can't hear the fuel pump after putting in proper relays? Maybe time to check if you are getting voltage to the pump, that it's grounded etc. They do go bad so if you are getting voltage to it on the firt turn of the key it might be bad.

Inertia switch is behind center fuse block in a '94 - don't know about a '95.

Good luck,
charles

Quote:
Originally Posted by MikeRuby View Post
cannot hear the fuel pump... real Bosch relays just arrived, had 'em overnighted... still not sure I've located the inertia cutout, might it be somewhere else?
Reply With Quote
  #14  
Old August 3rd, 2010, 05:47 PM
o2batsea's Avatar
o2batsea
Status: Offline
Bill Adams
66 109 sw 94 lwb
Member
 
Join Date: Jul 2009
Location: kensington md
Posts: 6,495
Registry
Dead fuel pump for sure.
__________________
Bill Adams

1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88

All my troubles are Rover
Reply With Quote
  #15  
Old August 3rd, 2010, 05:56 PM
rijosho's Avatar
rijosho
Status: Offline
Joshua
1995 Black ST - Rhinolined edition
Research Assistant/Eagle Eyes
 
Join Date: Apr 2009
Location: NYC
Posts: 16,557
Registry
Could it possibly be the ignition switch (inside the dash, Mike...behind the speedo)? I was getting key position 3 (starter) like you, even with a faulty switch, until it completely broke the next day or two later - I too had initially thought ECU or fuel pump (wrongly). They don't seem to all fail the same way, so you may have key positions 1 and 3 work, but 2 (the position that initiates the fuel pump) may not be functioning. It's a $17 or so part, $25 with shipping overnight. Mine works fine now after replacement.
Reply With Quote
  #16  
Old August 3rd, 2010, 05:58 PM
MikeRuby
Status: Offline
Mike Ruby
'95 D90 #2523
Member
 
Join Date: Jul 2009
Location: Nantucket, MA
Posts: 69
Thanks guys for all your assistance... Charles was right, the real Bosch relays worked... shitty local replacement ones were crap... FYI, I found them at autopartswherhouse.com for about $16 each...

Once again, thanks for all your diagnostic assistance...

Mike
Reply With Quote
  #17  
Old August 3rd, 2010, 06:13 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: 11,623
Registry
Whoohoo! A shitty day made worthwhile.

Was this the one that had been sitting for a while Mike? I think you had posted before about it.
Reply With Quote
  #18  
Old August 3rd, 2010, 06:30 PM
MikeRuby
Status: Offline
Mike Ruby
'95 D90 #2523
Member
 
Join Date: Jul 2009
Location: Nantucket, MA
Posts: 69
Yep, she had been sitting for about two and a half years when I bought her (outside under a bimini top and a $10 blue tarp, no less)... but I have a really great mechanic friend out here that helped me give her a lot of love (and $3500 worth of parts) back in Nov'08 when I started... She's been my daily driver, and since it's such a small island I take the 'long' way to the office, but I know I'm not driving her enough... Other than that, she's in great shape for as hard as this island is on steel.

Is it safe for me to presume the long sit had an effect on the relays?
Reply With Quote
  #19  
Old August 3rd, 2010, 06:36 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: 11,623
Registry
Yeah I think they just fail over time but I am sure sitting doesn't help.
Reply With Quote
Reply

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

Tags
ecu, 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
Speed Sensor and ECU Issues DJ Menasco Defender Technical Discussions 14 February 16th, 2006 08:45 PM
Bad Flasher tic-tock?! OCD90 Defender Technical Discussions 4 December 13th, 2005 02:13 AM
HELP 94 d90 will not start ripp2002 Defender Technical Discussions 64 August 25th, 2005 08:43 AM
95 won't start, possible fuel priming issue? jcasteel Defender Technical Discussions 1 March 15th, 2005 09:45 AM
Rats! Now my D90 won't start. No power to fuel pump jcasteel Defender Technical Discussions 8 March 15th, 2005 09:42 AM


All times are GMT -5. The time now is 04:49 AM.


Copyright