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Anyone Know What Temp Sends the VQ Into Limp Mode?

Old May 6, 2011 | 05:48 PM
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From: Redondo
Anyone Know What Temp Sends the VQ Into Limp Mode?

Like the title says, does anyone know at what oil temp we get sent to limp mode?
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Old May 8, 2011 | 12:10 AM
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I would imagine it would be around the 220-240F range.
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Old May 8, 2011 | 12:30 PM
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What do you mean "Limp mode"?. Are you refering to a loss of power in the lower rpms when the oil hits a certain temp?
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Old May 8, 2011 | 02:54 PM
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When the car begins to overheat it will limit the engine to a certain amount of rpm to allow it to cool down the oil temps. I believe this condition only really exists during a road course track day in which you're often using WOT and eventually will start cooking the oil and raising the engine temps. Not sure if I've heard of it during drag strip runs or other spirited driving.
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Old May 14, 2011 | 10:36 PM
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would anything else be causing this? I just had an oil change done, using amsoil. It just started out of the blue to studder at 2500rpm, it was a slow drive home needless to say... Oddly enough the VDC got disabled then the 'service engine soon' light came on 3/4s of the way back.
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Old Aug 9, 2011 | 03:14 PM
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Originally Posted by paulg37
would anything else be causing this? I just had an oil change done, using amsoil. It just started out of the blue to studder at 2500rpm, it was a slow drive home needless to say... Oddly enough the VDC got disabled then the 'service engine soon' light came on 3/4s of the way back.
did you ever find out what was going on with your car?
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Old Aug 9, 2011 | 09:27 PM
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I think its around 260-270F (130-135c) .
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Old Aug 24, 2011 | 04:19 PM
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My oil temp hit 270 on the run between LA and Las Vegas this weekend. No limp, but it sure made me nervous.
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Old Aug 28, 2011 | 02:50 AM
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Originally Posted by terrycs
My oil temp hit 270 on the run between LA and Las Vegas this weekend. No limp, but it sure made me nervous.
What are your average operating temps and ambient temps?
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Old Aug 29, 2011 | 02:37 AM
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Originally Posted by MiLK_MD
What are your average operating temps and ambient temps?
I didn't chart the whole trip to get an average . I only have the peaks: oil = 270, water = 228, EGT (at the exhaust manifold) = 1457.

Ambient temp was between 96 - 106
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Old Aug 29, 2011 | 08:59 PM
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Originally Posted by terrycs
I didn't chart the whole trip to get an average . I only have the peaks: oil = 270, water = 228, EGT (at the exhaust manifold) = 1457.

Ambient temp was between 96 - 106
Wow! I would be concerned too with oil temps that much higher than your water temp. Usually the oil comes in just below the water in temperature. I would invest in a cooler if I were you.
I don't run temp probes and such gear on my car... ignorance is truely bliss
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Old Aug 29, 2011 | 11:45 PM
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Wow indeed. How fast were you going (RPM)? You must have been desperate to get to Vegas and made that run in less than four hours Vegas, baby, Vegas!

I miss that drive.

Oh also, may I ask, where are you measuring for temps? Are you measuring ECT and EGT directly or off the ECU? For the oil, off the block, sandwich plate, pan or elsewhere?

Last edited by MiLK_MD; Aug 29, 2011 at 11:53 PM.
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