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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Check engine - only on Hwy

   
Old Apr 18, 2005 | 09:40 AM
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ASIM
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Joined: Sep 1999
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From: TORONTO, CANADA
Check engine - only on Hwy
Hey guys:

My check engine light has come on twice this week, both times on longer than normal highway drives. After about 20 minutes at 60 mph. Turn the car off and it goes away.

What do you think?
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Old Apr 18, 2005 | 09:56 AM
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WS Sick
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From: Oklahoma where trees are made of wood.
Re: Check engine - only on Hwy
You need to have it scanned and get the code that it is holding. But from experinec it could be about anything in that range.
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Old Apr 18, 2005 | 10:02 AM
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Pasky
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Re: Check engine - only on Hwy
Most likely its EGR but have it scanned to be sure.
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Old Apr 18, 2005 | 10:31 AM
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97Z-M6
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Joined: Mar 2002
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From: near waco tx.
Re: Check engine - only on Hwy
mine did that and it was the gas cap. have you recently got gas if so take the cap off and put it back on.
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Old Apr 18, 2005 | 10:51 AM
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WS Sick
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From: Oklahoma where trees are made of wood.
Re: Check engine - only on Hwy
His id a 95 so the Gas cap is not an option.
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Old Apr 18, 2005 | 11:39 AM
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StickMaster
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From: Hellaware
Re: Check engine - only on Hwy
Thats about what mine would do, it was an EGR code.
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Old Apr 18, 2005 | 11:51 AM
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BlownF1
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From: San Diego, CA
Re: Check engine - only on Hwy
My friends 97 did the same thing and it was the EGR.
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