D90 won't start!

[rover4x4]

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.

[dante18]

Hey any luck with those relays?

Dante

[rover4x4]

yeah man, hit the nail on the head. thanks

Phil

[Neo]

Phil, did you use the original equipment bosch relays? Also, where is Tarboro North Carolina? Is it near the mountains?

[rover4x4]

they are bosch relays. Its about 3 northwest of Wilimington uh about an hour east of raliegh about 40 minutes west of greenville.

[vesparover]

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

[vesparover]

The wires going to the fuel pump relay were pulling out! Whew- thought it was going to be another biggie!
brian bertolini

[Kent Welsh]

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?

[Mike Hippert]

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????

[Kent Welsh]

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 .

[Mike Hippert]

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?????

[Kent Welsh]

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?

[Mike Hippert]

Check the Code then reset it and see if it happens again.

[Kent Welsh]

Is there a way for me to check the code or do I have to go back to the dealer for that?

[Mike Hippert]

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 (http://www.d-90.com/faq/Engine/EngFault.html) .:grin

[PT94D90]

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]

[TwisteD90]

My guess will be fuel pump. Check your digital display box and see if there is any code.

[PT94D90]

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.

[rover4x4]

5w30 seems a little "lite" for the D-90 V8

[PT94D90]

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.

[Art Vigil]

Been running Castrol full synthetic 5W30 for several years in two different D90's with no problems (so far).:confused

[Eric_S]

FWIW,

Here is the response from Mike Hippert for the sump oil chart from the owners manual that I posted a few weeks ago....

"And the Book says, 6.5 quarts for the oil sump

5W/30 -22 to 90
5W/40 -22 to 122
10W/30 -4 to 90
10W/40 -4 to 122
15w/40 14 to 122
20W/40 32 to 122
25W/40 60 to 122"

Right now in Boston, MA it's a balmy 18 degrees :cool: with nighttime temps for the rest of the week in the single digits. So I use 5w/30 in the winter and 10w/40 or 20W/40 in the summer.

Eric

[PT94D90]

I got my truck back from the shop yesterday and the difference is dramatic. Not only does it fire immediately and start right up on cold starts, but the stumble on acceleration around 2200 rpm is gone. I highly recommend the $13 ecm prom for anyone with these issues. (Also put in a new ignition coil).

[DJ Menasco]

Good news & thanks again for the info Phil. My ecr prom is on the way!

DJ

[BrknRvr]

I have a 94 D-90 and it won't start. It turns over and is getting fuel and spark. I am not sure what is happening. If you have any ideas please let me know what to do. I will try anything.

Thanks

BrknRvr

[Mike Hippert]

Is your ECM getting power? What did you last do before it stopped working?

[LamontD]

:angry :confused I'm pretty new to this. Have a 97 d-90 that was running well. Did not use it for couple of months and when I went to start it, cranked but would not turn over. Played with the plug wires (rotated around) and still wouldn't start. Next day started without a problem. Today, same thing, crank but no start. Disconnected #1 wire and spark present. Disconnected fuel line after filter and minimal flow on cranking engine. I then disconnected fuel line before fuel filter and still minimal flow on cranking. Is this a fuel pump problem and/or relay problem? Any help would be appreciated. :confused

[chrisvonc]

Hi Marc, welcome to the forum.

There are a couple other threads that may present some help on this subject. I will merge them and hopefully they will help you out.

[evilfij]

My guess would be on a 97 to check the inertia switch, and if it is ok look at the fuel pump. You should hear it run when you turn the ignition.

I have one ECU with the cold start prom and one without and I can't tell the difference. BTW the dealer I worked for put 5w 30 in all the D90s (there were quite a good number in the area) and never had any oil light/pump issues.

I am willing to bet the coil was the main issue. there is an interesting bulliten on excessive dwell angles and how it kills the coil. there is a whole update involved--ignition module etc. Saw it happen twice. one it actually melted the coil so it started to leak black stuff. nasty.

some things to keep in minds when diagnosing these type of issues.

[LamontD]

Thanks for the help. In the works right now!!

[LamontD]

Fuel pump replaced and it works like a dream. Thanks for the help!

[PJ Naples]

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?
Hi Kent, PJ (Polly) Lodge here in Naples....I had that same problem with my 97 D90, thought it was just "bad gas"- after two or so tanks it stopped...I was THRILLED! then today in the Publix parking lot- it would start, but not STAY on.

I'm looking for a solution and would appreciate your advice! Polly

[Mike Hippert]

Hey Polly, any engine codes? I know a little about the 97's system.