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

Mass Airflow Sensor

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Old Sep 20, 2009 | 04:08 PM
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Default Mass Airflow Sensor

My car died the other day and I had to get towed to the mechanic. Was told the MAF was bad and had to be replaced (original so it was 22 years old). When I first started it after replacing the MAF the car really stumbled. After driving for a while it started running better. I still have some times where it will stumble (cold start up and sometimes at WOT). I have driven about 150 miles since replacing it.

Any suggestions?
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Old Sep 20, 2009 | 04:53 PM
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The car can run reasonably without the MAF but it would set a code in the ECM.

I doubt that it was just the MAF. Curious what did they charge you for a replacement MAF ?
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Old Sep 20, 2009 | 04:59 PM
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$298 Canadian for a new Bosch MAF. Any ideas where else to look? We checked fuel pressure and spark and both were fine.
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Old Sep 20, 2009 | 09:57 PM
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Many times,its the 2 MAF relays,located behind/next to the battery on the firewall.

Theres a MAF power and a Burn off relay.Sometimes one of them go bad and the MAF appears to fail.

Its cheap to replace both anytime a MAF problem comes up first and one in unsure what is exactly wrong.
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