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

Did I damage my MAF sensor?

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Old Nov 22, 2002 | 09:55 AM
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Default Did I damage my MAF sensor?

Several weeks ago I drove my Vette in a heavy rain storm. My supercharger requires my air intake to be located under the right headlight (bottom, front end of the Vette) and with the rain my Vette sucked in some water. Fortunately the water was not able to make it into the motor but it did contact the MAF sensor.

I took the MAF off and let it air dry out. After dropping the MAF back in the car it started up and drove somewhat normally. A couple of weeks (I don't drive too much) later my car started hesitating / stuttering at slight throttle at above 2500 rpm. At full throttle I don't notice a problem.

Could the water have damaged my MAF? Should I replace it no matter what? Anyone know where I can get one for cheap?

P.S. Enough time passed that I also added my Intercooler to the mix and that may also be causing some of the problems. I have changed out my ignition coil, plugs and checked for boost leaks.

Thanks for any help.
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Old Nov 22, 2002 | 10:40 AM
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Default Re: Did I damage my MAF sensor? (XTwinTurbo)

I don't know if yours is bad, I would think you could hook up a scan tool and see how it is performing to verify that. If you are looking for a replacement I would look for a Wells SU145. I bought mine at a local parts store. They are supposed to be better than the Bosch units. They don't use that thin wire, they use a thin film thing. Cheaper than Bosch, supposed to flow better, and more durable. Good luck.
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Old Nov 22, 2002 | 11:58 AM
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Default Re: Did I damage my MAF sensor? (XTwinTurbo)

Look inside the MAF. Are the tiny wires still in place?

Greg
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Old Nov 22, 2002 | 02:16 PM
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Default Re: Did I damage my MAF sensor? (Greg Johnson)

Thanks for the info.

The wires are intact and the unit appears to run, car starts and is driveable. I'm just wondering if water, a whole lot of it, could short circuit the MAF and cause sporratic problems.
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Old Nov 22, 2002 | 02:39 PM
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Default Re: Did I damage my MAF sensor? (XTwinTurbo)

I don't think water could damage the MAF in that way. Is the GM connector on the MAF closed completely. Will it seal out water? Is it dry?

Greg
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Old Nov 22, 2002 | 02:42 PM
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Default Re: Did I damage my MAF sensor? (XTwinTurbo)

More than likely, you got water in the ignition wires. Problems should go away when they dry out.
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Old Nov 22, 2002 | 03:24 PM
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Default Re: Did I damage my MAF sensor? (XTwinTurbo)

I would think if the MAF was malfunctioning it would generate an error code. You might get out the trusty old bent paper clip and check for codes...
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