Check Enginge light and Gas Cap - Defender Source
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  #1  
Old November 30th, 2007, 01:50 AM
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Alex Lapidus
1994 D90 ST #1716
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Check Enginge light and Gas Cap

I was loading my new D-90 on a ferry in Alaska and they wouldn't let me take the full Jerry can of gas on board with truck. So I hastily whipped the gas cap off and dumped 1/2 the gas in the tank and 1/2 the gas on the side of the truck because the spout sucked. At any rate immediately after that the Check Engine light came on. I have taken the cap on and off a few times, but the light remains on. The cap itself is one of those with the little spring-loaded door in the center of the cap that allows you to fuel right through the cap without taking it off, but I took it off anyway in the above episode.

1. What is going on and what should I do?
2. The Parking Brake light came on with the Check Engine light and when I looked in the repair manual it looks like they are on the same circuit - Does this explain why they are both on?

Thanks in advance for any help!

Follow-up Post:

PS: If I disconnect and reconnect the battery will it reset the check engine light?
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  #2  
Old November 30th, 2007, 02:05 AM
MonLand
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Loic Fabro
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What is the year of your truck? The easiest is to read the code to know why the light is on. Then you can fix the problem and reset the light.
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  #3  
Old November 30th, 2007, 02:32 AM
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Alex Lapidus
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It is a 1994.
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  #4  
Old November 30th, 2007, 02:55 AM
MonLand
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Quote:
Originally Posted by floyd650
It is a 1994.
Then read the code on the LED display thingy. If you're not sure where the display is located, do a search either on this groups or go to the TECH or FAQ section of the d-90 source web site. I think this is somewhere in the passenger foot wheel area (on the '95, it's under the passenger seat).
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I have an ex MoD and an ex wife. The two no longer conflict with each other.
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it is not hoarding it is selective collecting
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  #5  
Old November 30th, 2007, 06:05 AM
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Chris Hinkle
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Then to reset, disconnect the battery and then reconnect.
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  #6  
Old November 30th, 2007, 08:49 AM
MonLand
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If you fix the fault, the light will go away after 3 engine cycles (warm-up, cool down).
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Quote:
I have an ex MoD and an ex wife. The two no longer conflict with each other.
Quote:
it is not hoarding it is selective collecting
---
MonLand
1995 D90 NAS
1996 Discovery NAS
2006 LR3 NAS (hers, but comfy! :) )
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  #7  
Old November 30th, 2007, 11:16 AM
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Charles Galpin
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Welcome to Land Rover ownership!

On my '94 it's in front of the passengers right knee (under the dash). You have to crouch down to see the code (with the ignition on).

To reset the codes, you can disconnect the ECU (to the right of the passengers right foot). Turn the ignition on, wait for the check engine line to go off. Turn off and reconnect the ecu, then start it.

hth
charles
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  #8  
Old November 30th, 2007, 05:08 PM
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Andrew Najarian
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Is there a code readout on the NAS 110s? If so, where is it? I have had absolutely everything out and have not seen it...but I haven't looked for it either.
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Old November 30th, 2007, 06:38 PM
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Thought is was passenger side behind A/C - similar to 94 defender.
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  #10  
Old November 30th, 2007, 07:19 PM
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Andrew Najarian
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Well, on the 110 there is no A/C there but I'll take a look when I get back to the truck.

Thanks!
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  #11  
Old December 2nd, 2007, 11:16 PM
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It's there Andrew. Passenger footwell under the ECU. You have to pull it off of it's mount in order to read it (the LED display faces away from teh passenger).
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  #12  
Old December 2nd, 2007, 11:19 PM
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Andrew Najarian
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Quote:
Originally Posted by newfD90
It's there Andrew. Passenger footwell under the ECU. You have to pull it off of it's mount in order to read it (the LED display faces away from teh passenger).
Hmmm...Typical Land Rover convenience!
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  #13  
Old December 26th, 2007, 04:27 PM
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Alex Lapidus
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Just a belated update: The code claimed that my idle was out of whack and when I referenced the repair manual, it outlined a complex procedure that involved snipping some hose and doing a slew of other random things... I finally unplugged the battery, waited 30 seconds, and then reconnected it. This entirely fixed the check engine light and the code has stayed off for several weeks. I guess the little read-out deal is not that accurate. Still perplexed by what set it off in the first place...
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  #14  
Old December 27th, 2007, 05:44 AM
MonLand
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Quote:
Originally Posted by floyd650
Still perplexed by what set it off in the first place...
And you won't know until you run those tests! ;-)

More seriously, some electrical issues are very hard to troubleshoot because they come and go. You could have a connector that does not like to be wet and raises errors when it is (like some plug somewhere in the airbag system of my '96 Disco) or you could have a connector going bad that randomly stop letting the juice through (like the three feet connector between the chassis and the fuel pump) or it could also be a dirty sensor (or a sensor going out) or .....

Good luck with the troubleshooting!
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Quote:
I have an ex MoD and an ex wife. The two no longer conflict with each other.
Quote:
it is not hoarding it is selective collecting
---
MonLand
1995 D90 NAS
1996 Discovery NAS
2006 LR3 NAS (hers, but comfy! :) )
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