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Old 09-21-2020   #1
viper107
 
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Join Date: Dec 2019
Location: st louis mo
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Default 95 zr-1 lean pop

car runs great, hot or cold, but after start up sometimes,hot or cold sitting still,if you just punch the throttle,it will lean pop then rev, no ses light or codes,
before i start tearing into this thing,anybody got a clue?
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95 admiral blue z(sold)/ / 93 ruby z(sold) 91 steel blue z/95 aqua z haibeck 510, 91 callaway 415 areobody #5
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Old 09-21-2020   #2
tccrab
 
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Default Re: 95 zr-1 lean pop

Does the motor have any mods?
If so, do you have an updated PROM?
I know first hand that aftermarket exhausts will cause popping on deceleration. In my case it's the Flowmaster cat back system.
But I suspect all the other aftermarket systems will do the same.

An updated PROM from Haibec cured my popping.


'Crabs
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Old 09-22-2020   #3
viper107
 
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Default Re: 95 zr-1 lean pop

no mods, but its going to haibec in november for a 510 package and gears
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95 admiral blue z(sold)/ / 93 ruby z(sold) 91 steel blue z/95 aqua z haibeck 510, 91 callaway 415 areobody #5

Last edited by viper107; 09-22-2020 at 10:24 AM.
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