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Old 11-14-2006, 06:57 AM   #1 (permalink)
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High Idle when cold

98 RAV4 2.0. Manual Tranny. Searched but didn't find anything on this. Has anyone else seen this. When engine is cold and very cold outside like 30F get a very high idle. Too high. Like 2000 RPM. Not good for a cold engine IMO. Everything else is normal. When it warms up it idles where its supposed too. Around 750. I'm thinking it might be the idle control valve.

Last edited by Diamondsleeper; 11-14-2006 at 06:58 AM.
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Old 11-22-2006, 10:16 AM   #2 (permalink)
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I had the same concern with my 01 manual RAV. Mine would idle at 2K for about 1 min then back down. At operating temp my idle is about 750K which is normal.

After doing some research on the issue it appears this is normal for the Toyota. Apparently, the engineers want the engine to warm up as quickly as possible for emission reasons. I would not worry about it as long as the idle backs down to normal and it does not fluctuate at operating temperature. I believe an improper idle will throw a trouble code.
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Old 11-22-2006, 02:10 PM   #3 (permalink)
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Quote:
Originally Posted by JackRav
After doing some research on the issue it appears this is normal for the Toyota. Apparently, the engineers want the engine to warm up as quickly as possible for emission reasons. I would not worry about it as long as the idle backs down to normal and it does not fluctuate at operating temperature. I believe an improper idle will throw a trouble code.
The quicker the engine warms up, the lower the emissions and the better the fuel economy (the quicker you get heats to the vents too! )
I wouldnt worry about it. You arent going to hurt the engine because you arent putting a load on it when its idling.
My '85 4Runner used to idle at 1800 rpm when it was cold out and that engine had 245,000+ on it and still ran strong. I talked to the guy who bought it recently and from what he said it has close to 300,000 on it now and still runs great and doesnt burn a drop of oil.
High cold idle is a common Toyota trait. I wouldnt worry about it.
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Old 11-23-2006, 07:30 AM   #4 (permalink)
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Quote:
Originally Posted by Diamondsleeper
98 RAV4 2.0. Manual Tranny. Searched but didn't find anything on this. Has anyone else seen this. When engine is cold and very cold outside like 30F get a very high idle. Too high. Like 2000 RPM. Not good for a cold engine IMO. Everything else is normal. When it warms up it idles where its supposed too. Around 750. I'm thinking it might be the idle control valve.
It's normal to have it rev between 1800 - 2000 rpm on cold start , it will decrease as the engine warms up. I'd be concerned if the revs were beyond 2200 or doesn't decrease , then there would be a problem.

Btw... 30F isn't "very cold" here in the great white frigid north .. it's all relative.
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Old 11-25-2006, 11:23 AM   #5 (permalink)
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I had the same concern about the high idle on my 2006 RAV 4 and mentioned it to the dealer when I was in for my first oil change. Was told that high idle when cold is normal. I think other Toyotas have cold high idle speeds.
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Old 11-25-2006, 04:12 PM   #6 (permalink)
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Quote:
Originally Posted by golfer
Btw... 30F isn't "very cold" here in the great white frigid north .. it's all relative.
Here in Wisconsin thats considered to be a heatwave.
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Old 11-25-2006, 05:40 PM   #7 (permalink)
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I remember in my rolla it'd start off at 2k instead of 800-900

I also remember going like a bat out of hell before it got back down (yes I didn't wait for it to warm up, I know 2k idle means 100% more accel
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Old 11-25-2006, 08:30 PM   #8 (permalink)
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Quote:
Originally Posted by HL2k
I also remember going like a bat out of hell before it got back down (yes I didn't wait for it to warm up, I know 2k idle means 100% more accel
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Old 11-27-2006, 11:39 AM   #9 (permalink)
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Its Fixed

Changed out idle control valve, and it fixed the problem. It now idles at around 1400 RPM when cold 20 to 25 F for about 2 mins and then drops to 1000. when warmed up it goes to 750 800. before I changed it the idle was starting to become erratic when warm and had rough idle most of the time. Guess I forgot to metion the "when warmed up" stuff earlier.
Thanks for the input everybody.
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