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Discovery I Discuss here about the first version of Land Rover Discovery (Disco I) in this section.


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Old 05-18-2011, 02:43 AM   #1
63gstone
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Join Date: May 2011
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Default Eradic Idle
My 99 Disco I wants to idle up to 1500 to 1700 RPM. And sometimes idles normally...
I have:
1. replaced fuel filter
2. replaced plugs and plug wires
3. replaced IAC (twice)
4. cleaned manifold
5. replaced PCV hoses
6. replaced fuel temp sensor

Also, it sometimes will not start when hot and I have to wait until engine cools down. It seems to not be getting gas or something of that nature. I have replaced the crank shaft sensor for this problem but it keeps happening.

ANY help would be greatly appreciated on these 2 issues. I am at my wits end!

Thank you in advance!
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Old 05-18-2011, 02:54 AM   #2
Joey
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Depending on the mileage I would start by checking fuel pressure at the fuel rail, could very well be early sings that your fuel pump is starting to go.

Keep in mind, I have no idea about the rest of the vehicle maintenance history or milage.
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Joey
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http://www.customroveraccessories.com Home of the New D2 horn buttons!

http://www.usarovers.com/ (call for Rover parts ask for Nathan 502-222-5859)

Rover Radio issues or IPOD Adapters http://home.valornet.com/splacket/index.htm

EAS fault http://www.rswsolutions.com

When working with GEMS vehicles. Never try to locate a misfire by pulling plug leads off - pull the injector connector instead. Otherwise you can blow up the ECU.

Secondly never swap ECUs between vehicles to test them, because both vehicles and ECUs may stop working, and you'll have to have them all reset by a franchised LR dealer (ouch!).
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Old 05-18-2011, 03:06 AM   #3
63gstone
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The milage is ~170K. I have kept it well sice I baught it at 80K miles. Oil changes etc. I even took it to a Rover mechanic and the problem was "fixed" for a few days then started back reving up to 1500 RPM again.
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Old 05-18-2011, 12:19 PM   #4
Joey
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I would check the fuel pressure, I bet you will find you need a new fuel pump.
__________________
This forum is not used much... please go to:

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Joey
Cincinnati OH
http://www.customroveraccessories.com Home of the New D2 horn buttons!

http://www.usarovers.com/ (call for Rover parts ask for Nathan 502-222-5859)

Rover Radio issues or IPOD Adapters http://home.valornet.com/splacket/index.htm

EAS fault http://www.rswsolutions.com

When working with GEMS vehicles. Never try to locate a misfire by pulling plug leads off - pull the injector connector instead. Otherwise you can blow up the ECU.

Secondly never swap ECUs between vehicles to test them, because both vehicles and ECUs may stop working, and you'll have to have them all reset by a franchised LR dealer (ouch!).
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Old 05-19-2011, 12:34 AM   #5
63gstone
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If that is the case, is there any way to repair it? I am afraid to find out how much a new, or even used one costs.
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Old 05-19-2011, 01:42 AM   #6
Joey
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First thing I would do is check fuel pressure. If it's is a bad pump, then give Nathan a call in my signature and he can help find you one.
__________________
This forum is not used much... please go to:

http://www.landroverworld.org


Joey
Cincinnati OH
http://www.customroveraccessories.com Home of the New D2 horn buttons!

http://www.usarovers.com/ (call for Rover parts ask for Nathan 502-222-5859)

Rover Radio issues or IPOD Adapters http://home.valornet.com/splacket/index.htm

EAS fault http://www.rswsolutions.com

When working with GEMS vehicles. Never try to locate a misfire by pulling plug leads off - pull the injector connector instead. Otherwise you can blow up the ECU.

Secondly never swap ECUs between vehicles to test them, because both vehicles and ECUs may stop working, and you'll have to have them all reset by a franchised LR dealer (ouch!).
Joey is offline   Reply With Quote
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