C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

EGR Sensor???

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Old Sep 16, 2004 | 12:13 AM
  #1  
EPiC Vette's Avatar
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From: Tracy CA
Default EGR Sensor???

I've got an '89 with L98 engine.

What's the sensor called that is located on a tube that runs from the pass side exhaust manifold (I think!), up over the valve cover, then down to the "intake manifold" (do TPI cars *have* intake manifolds??? ). I kinda destroyed mine!

I'm not throwing any codes, and, after changing an O2 sensor, I still have a wonky idle when the engine warms up.

Thanks, all...
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Old Sep 16, 2004 | 09:16 AM
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I believe that would be the egr temp switch. I removed my egr system and have thrown no codes or caused me any problems so it's probably not a panic situation
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Old Sep 16, 2004 | 09:34 AM
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From: Tracy CA
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It's one of those things that's gonna bug me 'cause it leaves an electrical lead just kinda dangling on the valve cover.

I've heard EGR Temp Sensor and EGR Position Sensor.

If I didn't have a smog check coming up (thanks, California !), I'd just be tempted to let it go .

Not gonna loose sleep over it, though...
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Old Sep 16, 2004 | 10:31 AM
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Think about it for a second. How could something THAT far from the EGR, sense the EGR position? *I* don't know what it is. I don't have one on my car and consequently, MY Helms doesn't show it. What does YOUR manual call it? In any case, I would rig it up to look normal, wire connected and all, for the visual portion of your California smog test.

RACE ON!!!
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Old Sep 16, 2004 | 11:13 AM
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That is indeed the EGR Temp sensor; it should be available through a parts store like Auto Zone.

You will likely need to splice into the Grn wire running from the sensor, as the connector (at least on my '88) is located behind and the intake base to the left of the dist.
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