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Old 05-06-2019, 12:59 PM   #1
TovinoThomas
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Join Date: Apr 2019
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Default 1997 Disco Idle Problems

I just joined the club with a 1997 Disco 1. The major issues I’m having right now are the engine revving high in idle and park (can get up over 2000 rpm), and the ac fan only working on speed 2.
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For the idle, I’ve checked for vacuum leak and replaced the idle air control valve.

For the ac fan, I’ve replaced the blower fan resistor under the glove box.

Anyone have something similar or any ideas?

Last edited by TovinoThomas; 10-03-2019 at 11:23 AM.
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Old 05-06-2019, 01:03 PM   #2
Joey
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Welcome to the forum. First and formost, I recommend going to the new forum site listed in my signature.

Second. High Revving, I would pull the intake air tube and clean the throttle body as well as clean he MAF sensor, if you have a K&N style filter I would recommend throwing it away and buying a paper filter. The MAF's do not like oil.

Fan stuck on a specific setting, sounds like a bad control module or dirty switch. (i.e. the part in the dash you adjust)
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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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