Please Help MAF problems
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Instructor
Joined: Apr 2005
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From: Woodlands TX
Please Help MAF problems
Please help me. My 88 vette keeps throwing code 33. I cant fix it. I replaced the MAF sensor 3 times and still does not fix problem. Dont know whats wrong. I heard the K&N filter oil can mess with it so I cleaned the element and installed dry and code 33 still sets. Does anyone have a suggestion?
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Originally Posted by DVS 99
Please help me. My 88 vette keeps throwing code 33. I cant fix it. I replaced the MAF sensor 3 times and still does not fix problem. Dont know whats wrong. I heard the K&N filter oil can mess with it so I cleaned the element and installed dry and code 33 still sets. Does anyone have a suggestion?
Replace both power relays at the same time, per Gorden Killebrew and personal experience, if you don't you will have a repeat of the problemAlso, and again Gorden helped me with this down at Cruise In VI. two things can occur
1) dirty connections where the harness mates with the MAF sensor and
2) loose pin connections inside the harness.
To take care of #1, liberally spray the connections with electical contact cleaner or 93% isopropyl Alcohol
To take care of # 2. take a very small pick and kind of tighten up the female sockets
Personally. I would do both
Seeya
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Joined: Dec 2000
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From: SE NY
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Check the TPS as the ECM is also looking at the throttle position and comparing with MAF reported air flow.
Does the ECM throw the code at startup, at warm idle or during cruize??
Does the ECM throw the code at startup, at warm idle or during cruize??
