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

Code: 33 wtf????

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Old May 29, 2010 | 03:52 PM
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Default Code: 33 wtf????

My 87 is reading a code 33 "Check terminal C on the MAF sensor - it should be about .05 volts at idle and 4.7 volts at wide open throttle. Trace the wire from terminal C and look for an open. Replace the MAF sensor."

So I replaced the MAF and it cost me $150. It didnt fix the proble and the code is still there. I disconectted the battery to reset the codes but it came right back.

What should my next step be??? When I drive it and give it full throttle it bogs down real bad untill I let off the gas.

Any ideas???
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Old May 29, 2010 | 04:19 PM
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Bump??
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Old May 29, 2010 | 04:57 PM
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http://members.shaw.ca/corvette86/Code%2033.pdf

Assuming Code 33 is the only code, i'd do the above first, then I would trace the wiring to the relays, then replace both relays on the firewall behind the battery.
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Old May 29, 2010 | 05:27 PM
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Thanks vader86 that is helpfull. I will replace the relays tonight and hopefuly it will be fixed! I cant wait till the limp mode is gone!
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