Engine will not stay running

[waveridin1959]

I have run into this problem before, but it stopped for a couple months. Today the 90 just dies after i let off the gas and push the clutch in. It will not idle on its own. Makes it pretty hard to drive when the idle get low enough it cuts out. Would it be the fuel pump or and ignition problem?

[Mike Hippert]

Fuel filter.

[evilfij]

Stepper motor.

clean and refit--if persists, replace.

Ron

[waveridin1959]

Where would i find the stepper motor? How does it come out? I wonder if it would be hte fuel filter. Now it will not start on its own, i gotta push the gas when cranking it to get it rev.

[norros]

Hey Mike,

How often do you change the fuel filter ?

I did mine 2 yrs ago, maybe have 20k on it.

Mine shuts off sometimes, right when I start it, generally when it is VERY HOT outside, like it is a lot in Tallahassee, Florida. When I start it the second time though, it's perfect, every time. hmm ?

Thank you & sorry for hi-jacking post somewhat !!

Nicholas

[Campbell]

Mine just started to do this yesterday. When I come to a stop light it stalls sometimes. It has always idled perfect. I was actually going to post this question today. I also have no idea where the stepper motor is. Also, how difficult is it to replace the fuel filter?

[Mike Hippert]

Honestly my PO replaced the fuel filter right before I bought my 90 so I have never replaced it in the 1 1/2 years of owning it. But I remembered that I sometimes would have a stalling issue at stop lights, it was due to the sparkplug wire ends getting wet and corroded on the Cap end. I pulled them off, cleaned them up and no more problems. They became corroded from allot of rain, they were not pushed on very tight, and the rubber boot was slid back on a few of them. I'll let Ron handle the stepper motor questions as I have not had to do anything with mine (replaced by PO:) ) and as far as the fuel filter, look under the passenger side along the frame between the front and rear tires. Another thing to check is the wires them selves, if they are old and warn then you may need to replace them. A little story to all; My PO brought the 90 in for service due to the same problems, had all of the above replaced and more including the timing chain! Then they replaced the cheap old fuel filter and it ran fine. So replace the cheap stuff first, it will save you allot in the long run! :grin

[Marx-110]

I am plauged by the same problem! I am relieved to hear I am not alone. Would these solutions go for my 110 also?

[Mike Hippert]

I am plauged by the same problem! I am relieved to hear I am not alone. Would these solutions go for my 110 also?Yep!

[waveridin1959]

Any help with the stepper motor??

[Abrooks]

Stepper motor is essentially on the back of the plenum in front of the airbox . If you're looking at the motor, it's at the back on top on the left (how's that for a horrible desciption). look for a black octagonal plug. Disconnect plug, unscrew stepper. Replace with the factory part as the napa cross-reference never seems to work. And this could certainly be the culprit. Try DAP for the part, they were the cheapest last I checked.

Good luck.

[Davis]

I would clean the stepper before replacing it--and you can visually inspect the motor by turning the car on with it unplugged and seeing if it is retracting/extending.

[Campbell]

How difficult is it to replace the fuel filter?
Thanks

[Abrooks]

1. I think you may want to invest in a workshop manual.
2. Look under the passenger side of the truck along the outside of the framerail. One bolt holds the filter bracket and the fuel lines unscrew from the filter. Filters can be found at most car parts places.

[Campbell]

Yeah I'm tring to find a manual. I keep seeing the cd ones on ebay I'm just not sure if they are any good. My question with the fuel filter is if you have to drain fuel from the lines before swapping it or do you just unscrew it and attach the new one.

[Abrooks]

I think the *proper* way to do it is to pull the fuel pump relay to depressurize the system. I just pull it apart and put a glass bowl under the filter to collect the gas (or just park on weeds and then I can say I did some yard work as well).

[Campbell]

Thanks

[Mike Hippert]

Yeah I'm tring to find a manual. I keep seeing the cd ones on ebay I'm just not sure if they are any good. My question with the fuel filter is if you have to drain fuel from the lines before swapping it or do you just unscrew it and attach the new one.
Rich, Call Rovers North! They have a good manual for $50!

[Antonios]

Here's a picture of the stepper removed & cleaned. The manual I have calls it the idle air control valve and it's in the fuel system section 19-9.

I was going to ask a question but after taking it out and cleaning it the stalling problem seems to have stopped.

I had this problem late last year and the garage changed the fuel filter, the plug wires, and distributor cap.

[Mike Hippert]

You may also want to clean where it goes into. And yeah, stepper IAC it'a all the same.

[Antonios]

Well the problem has retunred with a vengence. Today the engine began to die as I was on the highway with my foot on the gas. The power just disappeared and I had to pull over. After cutting it completely off I was able to restart and it ran fine all the way home. A week ago it was stalling consistently and it stopped after cleaning the stepper motor.

I'm going to try and clean the stepper again and get inside this time. What else should I check for? My fuel filter, plugs, wires, and rotor cap are less than a year old

[d901560]

Have you replaced the fuel pump relay? Mine used to stall randomly for a couple of months before it failed completely and wouldn't start.

[Antonios]

No I haven't. Is there a way to test it?

[Abrooks]

Check the ignition system? I'd guess Ignition control module. If so, STC1856 is your friend.

[DJ Menasco]

Well the problem has retunred with a vengence. Today the engine began to die as I was on the highway with my foot on the gas. The power just disappeared and I had to pull over. After cutting it completely off I was able to restart and it ran fine all the way home. A week ago it was stalling consistently and it stopped after cleaning the stepper motor.

I'm going to try and clean the stepper again and get inside this time. What else should I check for? My fuel filter, plugs, wires, and rotor cap are less than a year old


I had this problem about 1.5 years ago. It turned out to be a loose wire. The wire was connected to a four-way plug that connects to the MAF. Every time the road got rough the wire disconnected and the engine died. Its probably a long shot but you might want to just have a look at those connections.

DJ

[Ragland]

Before taking pieces apart,

1. Is the check engine light on after this occurs?
2. Are you getting any error codes on the display unit?

[Antonios]

Fuel pump relay was'nt all the way pushed in, but engine still stalls anyway.
Checked wire harness on MAF and all seems tight

I haven't checked anything in the ignition system. How would I test the ignition control module? I don't have any special electronic equipment for testing.

No Check engine light or codes when it stalls.

thanks for all the suggestions

ADDED** I just cleaned the stepper motor...inside & out, and it seems to be OK (again). I'll drive around a bit more and see what happens

[Hans]

Hmmmm..... didn't Land Rover have a bulletin on this type of problem?

Unfortunately, I don't have access to the databases.

-Hans

[Antonios]

I used wd-40 to clean my stepper, is there something better to use?

Last two days it's driving fine like nothing ever happened. It does seem to hesistate a little bit when I hit the gas from idle.

[Mike Hippert]

Break cleaner worked pretty well for me!

[rustydefender]

That happened to me but it turned out it was the ecu. It had gotten wet when i pressure washed my car i dried it out with and air compressor waited for a night and the problem was solved.