MAF screen in or out?
Thread Starter
Racer
Joined: Nov 2002
Posts: 303
Likes: 0
From: Miami FL
MAF screen in or out?
I get the "service engine soon" light that turns on every now an then. The readout code for my 87 is 36 which is my MAF. I was about to purchase a new or used one from another member when I decided to take it out and clean it. I cleaned it and the light went off. Now it comes on again from time to time and will go off as I drive or will stay on and I take it out clean it and will go off again. My question is, should I remove the screens at the front and back of it? Sorry about were I posted this was half asleep and did not realize where I was.
:sleep:
[Modified by My87, 11:29 AM 1/30/2003]
:sleep:
[Modified by My87, 11:29 AM 1/30/2003]
Safety Car
Joined: Oct 2001
Posts: 4,763
Likes: 1
From: Connectivette
Re: MAF screen in or out? (My87)
Your MAF relays (burn-off and power) may be causing you to trip your code. They are identical and located on the firewall behind your battery, you can start there. Not only have I removed my screens but I cut out the heat sinks also in an effort to squeeze some more ponies out of my set-up.
Does it do anything? :skep:
Does it do anything? :skep:
Drifting
Joined: Dec 2002
Posts: 1,861
Likes: 4
From: Houston TX
Re: MAF screen in or out? (chucks88)
Whatever you do, do NOT cut the heat sinks out of the MAF. They provide the cooling for the electronics in the MAF sensor. Cutting out the heat sink drastically decreases the lifespan of the sensor. Also the output signal of the sensor is calibrated based on a known cross-sectional area in the sensor. Messing with that area without re-calibrating the signal gives you bogus readings.
Drifting
Joined: May 2002
Posts: 1,509
Likes: 3
From: Hazel Park MI
Re: MAF screen in or out? (CorvetteZ51Racer)
:iagree: Messing with the sink fins can mess up your ECM readings, especially with an aftermarket chip, if not calibrated for such a condition. Changing the relays will help. :seeya
Safety Car
Joined: Oct 2001
Posts: 4,763
Likes: 1
From: Connectivette
Re: MAF screen in or out? (jmrl98)
:iagree: Messing with the sink fins can mess up your ECM readings, especially with an aftermarket chip, if not calibrated for such a condition. Changing the relays will help. :seeya
Burning Brakes
Joined: Apr 2002
Posts: 755
Likes: 0
From: Patterson CA
Re: MAF screen in or out? (My87)
I pulled my screens (didn't touch the fins) and I think it was a waste of time. Absolutely no difference whatsoever. Maybe it might make a slim difference at the track but for driving around town it didn't do a thing.
Thread Starter
Racer
Joined: Nov 2002
Posts: 303
Likes: 0
From: Miami FL
Re: MAF screen in or out? (My87)
LIke I said before on my post, I posted this twice like an idiot because I was half asleep but everyone has told me pretty much the same thing about the relays. I will take them out today and replace them. Hopefully that is the problem. Thanks All
Drifting
Joined: Aug 2000
Posts: 1,521
Likes: 0
From: West Islip New York
Re: MAF screen in or out? (CorvetteZ51Racer)
Also the output signal of the sensor is calibrated based on a known cross-sectional area in the sensor. Messing with that area without re-calibrating the signal gives you bogus readings.
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