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

EGR question

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Old Apr 27, 2005 | 04:41 PM
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Default EGR question

my EGR pipe in my 91 has a big slit in it. its causing a pretty loud exhaust leak and was wondering that if i get the EGR block off plates will it throw a code?



does it come with gaskets and bolts?
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Old Apr 27, 2005 | 06:22 PM
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It should throw the EGR code 32, unless you are running a 160deg T-stat & fan switch.

The ECM will not try to turn on the EGR untill at steady speed with coolant temps above 175deg F. Below that temp it's not needed to cool the combustion chamber.
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Old Apr 27, 2005 | 06:41 PM
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if the code is thrown, will it affect the way the car runs
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Old Apr 27, 2005 | 06:46 PM
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When it happened to my '88 the car seemed to run a little rough till I shut off the engine and restarted it.

The ECM may go into limp home mode, but not sure. In which case fuel economy and performance would suffer.
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Old Apr 27, 2005 | 06:51 PM
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Originally Posted by 65Z01
When it happened to my '88 the car seemed to run a little rough till I shut off the engine and restarted it.

The ECM may go into limp home mode, but not sure. In which case fuel economy and performance would suffer.
should there be a code 32... do the diode trick you taught me ..IT WORKS WELL...NO MORE CODES running 180* F t stat...with no egr system gone ALL GONE... thanks to 65Z01
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Old Apr 27, 2005 | 08:30 PM
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what is this "diode trick" you are talking about? How did you get rid of the EGR without throwing the code?
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Old Apr 27, 2005 | 09:32 PM
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Originally Posted by Irishpilot03
what is this "diode trick" you are talking about? How did you get rid of the EGR without throwing the code?
ask 65Z01 for his fix regarding code 32 ( i call it the unknown area 51 of EGR).. send pm requesting info
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