D90 won't start! - Defender Source
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  #1  
Old September 29th, 2003, 11:18 PM
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Phillip
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D-90 wont start

thanks to yall's help I almost think I have this thing figured out. Ordered some fuel pump relays so hopefully that will work. once again thanks to all the contributed.
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  #2  
Old October 3rd, 2003, 09:26 AM
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Hey any luck with those relays?

Dante
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  #3  
Old October 3rd, 2003, 09:33 AM
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yeah man, hit the nail on the head. thanks

Phil
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  #4  
Old October 3rd, 2003, 03:53 PM
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Jeffrey Rosbrugh
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Talking

Phil, did you use the original equipment bosch relays? Also, where is Tarboro North Carolina? Is it near the mountains?
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  #5  
Old October 3rd, 2003, 05:28 PM
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they are bosch relays. Its about 3 northwest of Wilimington uh about an hour east of raliegh about 40 minutes west of greenville.
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  #6  
Old November 15th, 2003, 07:04 PM
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brian bertolini
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d90 Won't start- please help!

hey everyone,
Here's the deal with my truck this week. I start it this morning no problem- then it shuts off maybe 5 seconds later. It restarts without any problem and off I go. Park it at my first stop and when I try to restart it the same thing happens. Only this time it doesn't restart. It's turning over and once in a while it will act like it's going to start, so i give it gas and it dies. I unplugged the ecu to reset it- to no avail. Disconnected the neg terminal to no avail. The fuel pump fuse wasn't blown- the relays are new. I also have a new coil so I don't think that's the problem. It's dark now so I can't tell if it's getting gas- but I can smell it. As for spark- I'm going to find out in the morning. It's not doing anything anymore but cranking- not even acting like it's going to start. Can anyone give me some ideas- or maybe similar experiences?
thanks
brian bertolini
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  #7  
Old November 15th, 2003, 09:02 PM
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solved it

The wires going to the fuel pump relay were pulling out! Whew- thought it was going to be another biggie!
brian bertolini
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  #8  
Old December 1st, 2003, 01:17 PM
Kent Welsh
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D90 won't start

I bought this truck about three months ago. For about the last six weeks I've had trouble getting it started. I'm not much of a mechanic so it's been dealt with at the local dealership.
It turns over and will crank and crank but not fire. Sometimes you can try it again and it will start but still reluctantly. So far we've replaced the ignition module, fuel pump and all of the wiring to the fuel pump and it's still doing it. I've just ordered a water temperature sensor but it's been suggested that since my plugs aren't soaked when I pull them out after cranking that that's not going to be it. Any help?
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  #9  
Old December 1st, 2003, 01:31 PM
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Did you check for spark at the plugs? Check/replace the fuel filter? What does the water temp sensor have to do with the engine starting? The engine should be able to run without any coolant for a short time????
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  #10  
Old December 1st, 2003, 03:52 PM
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Yes, there's spark. Fuel filter is new.
Supposedly the water temperature sensor (if bad) can send a faulty signal to the ECU and flood it .
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  #11  
Old December 1st, 2003, 04:35 PM
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Does the ECU throw a code? It's easy to check. If it doesn't throw a code and you are not starting but you are getting fuel and spark maybe your timing is off or some of your plug wires are in the wrong place?????
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  #12  
Old December 2nd, 2003, 09:54 AM
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The check engine light is on now but it's just come on in the last few days. The truck usually starts eventually. It just takes a lot of cranking to get it to fire. Once started it seems to run okay.
I did just have a 60,000 mile service and all of this started just a few days after that?
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  #13  
Old December 2nd, 2003, 10:03 AM
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Check the Code then reset it and see if it happens again.
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  #14  
Old December 2nd, 2003, 11:09 AM
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Is there a way for me to check the code or do I have to go back to the dealer for that?
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  #15  
Old December 2nd, 2003, 11:32 AM
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Check out the FAQ section. There is a cover over the display, it is in the passenger side foot area by the door. The cover has 2 screws on it. The display will have a # displayed the FAQ section has a list of what the codes are. What the heck here is ashortcut .
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  #16  
Old January 2nd, 2004, 05:55 PM
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D90 won't start!

She wouldn't start up today. When I turn the ignition on it will crank (or run) but won't fire and start up. Since I bought this truck in Aug it has almost never started right up when cold. It routinely runs for several seconds before firing and starting up. On the handful of occassions when it hasn't fired and started at all, I then turn off the ignition, fully depress gas pedal and repeat process (per owner's manual) and this has always worked. Until today. Fuel filter was replaced in Aug.
Any thoughts are welcomed.

[This post has been merged]
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  #17  
Old January 2nd, 2004, 06:14 PM
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My guess will be fuel pump. Check your digital display box and see if there is any code.
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  #18  
Old January 6th, 2004, 06:31 PM
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Just to update on my problem - this might be useful to others. I took my rig to a local shop and they found I had both spark and fuel. The problem was too much fuel and not quite enough spark. They told me there is a LR bulletin about this problem and there is a computer update available (ecm prom). The update addresses the problem of the fuel injectors releasing too much fuel on cold start up. There are also several minor things LR recommends including upgrading to thicker battery cables and using 5w-30 motor oil. It looks like this will be a relatively easy fix of a new ignition coil, ecm prom, and and oil change.
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  #19  
Old January 6th, 2004, 09:05 PM
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5w30 seems a little "lite" for the D-90 V8
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  #20  
Old January 6th, 2004, 09:10 PM
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Michael Green of WCB agrees. Here is what he said.

That's Eric (no doubt) at LRNA (if he's still employeed! lol)... 5/30 is far too thin for a D90 version (95 backwards) due to low psi pump. They need thicker oil. In the winter (cold) you can use such ... see owners manual. But in summer heat have to change to 5/50 or 20/50w for max performance and engine life.
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