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

HELP CODE #33, stubble on acceleration

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Old May 28, 2010 | 03:47 PM
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Default HELP CODE #33, stubble on acceleration

replaced engine,, no codes except code 33.. which is the 85-90 tpi MAF sensor circuit..

is says: check vacuum and air leaks.... ok
check MAF sensor(new) connections,,, assume these are at the at the plug?
REplace MAFS Relays.. Where are these relays??????? Replace EMC,, done this

also says replace
MAP sensor,(84to 91 ) cant find it .. becuz maybe there isnt
one?

Cannot incresae rpm without stubble...cam WAS replaced with 258h which is computer compatable. so dont go here! k

any ideas please,,
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Old May 28, 2010 | 04:43 PM
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MAF relays are behind the battery on the firewall, there are 2. I believe theyre listed with the same part number.

You do not have a MAP sensor on a MAF car.
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Old May 28, 2010 | 04:59 PM
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Originally Posted by vader86
MAF relays are behind the battery on the firewall, there are 2. I believe theyre listed with the same part number.

You do not have a MAP sensor on a MAF car.
HI there vader86,, long time no hear from you...thanks,, i checking them now..ok yes there are 2 .. when facing them which is the maf relay left or right??
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Old May 28, 2010 | 05:32 PM
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You should replace both relays at the same time. They are both MAF relays. Shouldnt be over $20. I believe its the burnoff on the left, power on the right with the white connector (on mine).
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Old May 28, 2010 | 06:48 PM
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Originally Posted by vader86
You should replace both relays at the same time. They are both MAF relays. Shouldnt be over $20. I believe its the burnoff on the left, power on the right with the white connector (on mine).
ok the one on the left is differrent then the right.. they look the same but the pins out are different( E/A open)!! however i had new ones replaced burn off relay( black) .. and works just fine!! set timming at 8before.. thanks VADER86..

the white, i think, powers the maf sensor,, is that right?
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