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

getting codes 33 and 34

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Old Jul 10, 2008 | 03:54 PM
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Default getting codes 33 and 34

do I need to replace the maf sensor on my 86 vette?
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Old Jul 10, 2008 | 04:09 PM
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http://members.shaw.ca/corvette86/Code%2033.pdf

http://members.shaw.ca/corvette86/Code%2034.pdf

You read those first. It is likely that elimination of one code will solve the other, so it is best to replace both relays on the firewall, and then the sensor itself. A new sensor should always be put in with new relays, however.
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Old Jul 10, 2008 | 05:23 PM
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I agree...the Relays are cheap and often cure the problem. If they don't do it, you might also check the Coolant Temperature Sensor. Mine once had a bad connector there, which made the idle bad, which set off the code 34.

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Old Jul 10, 2008 | 07:04 PM
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Change the relays, clean all electrical connections, and also clean the MAF with MAF Spray Cleaner.
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Old Jul 10, 2008 | 08:42 PM
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....relays first.....
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