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Cold-Idle normal, Warm- idle high, LH 2.4 200 1990

posted by  ricefive on  Fri Feb 7 02:51 CST 2003
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last visit: Mon Nov 29 07:33 CST 2010
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Hello,
When I first start the car when it is cold, it idles at about 850 rpm. After a minute or two when it warms up, it idles steadily at 1200 rpm. WIth the LH 2.4 it is not adjustable, but if it idles correctly when cold, I don't want to adjust the idle. I have no codes showing anything wrong. What is going on?
--
1990 240- 230K- VX cam, springs, bilstiens, spt exh, euro lamps-turbo whls








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Cold-Idle normal, Warm- idle high, LH 2.4 200 1990

posted by  Smitty on  Sat Feb 8 02:57 CST 2003
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last visit: Sat Aug 9 22:44 CST 2014
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Hey there Rice -
Noticed your '90 has the VX cam. I have the same in my '92 245 with the M47, and my son is inquiring about slipping a VX into his '91 with the AW70. Which trans do you have? I'm wondering how much an improvement the cam would make with the auto trans, without changing to a higher stall speed torque converter. I'd be interested in your impressions.

Smitty








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Cold-Idle normal, Warm- idle high, LH 2.4 200 1990

posted by  JetDriver on  Fri Feb 7 03:37 CST 2003
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last visit: Mon Jul 25 08:59 CST 2011
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I had a similar problem due to my use of a vacumn line that wasn't oil resistant. This cause the line to expand naturally and then more as the vehicle warmed up causing the higher idle. Just a thought.
--
92 244 lowered, Bilsteins, IPD sways, Unitek cam/header, TSW Revo 18x8's - 94 965 Niiice MONEY PIT! - 76 Datsun 280Z lowered, modified head, cam, headers, intake







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