MAF question
Drifting
Joined: Dec 2002
Posts: 1,861
Likes: 4
From: Houston TX
Re: MAF question (Tolofou)
It's likely running in limp-home mode, which means that the ECM knows that something's not right with the MAF sensor, so it ignores the information it receives through the MAF circuit, and runs off of the other tables.
Le Mans Master
Joined: Jul 2001
Posts: 8,184
Likes: 3
From: Santa Maria, CA
Re: MAF question (Tolofou)
Any codes? Is the check engine bulb good?
Disconnect battery for 30 seconds and connect. Start car. Any change? If ya place a 3.9 K ohm resistor between A & B terminals you can put the ecm in limp home mode to verify. Disconnect MAF from filter side so you can see down into the sensor. Engine running, be looking down into it in a dark area. Have some one turn key off. You should see the wire glow.
[Modified by 89 Paul in Cal, 2:44 AM 3/9/2003]
Disconnect battery for 30 seconds and connect. Start car. Any change? If ya place a 3.9 K ohm resistor between A & B terminals you can put the ecm in limp home mode to verify. Disconnect MAF from filter side so you can see down into the sensor. Engine running, be looking down into it in a dark area. Have some one turn key off. You should see the wire glow.
[Modified by 89 Paul in Cal, 2:44 AM 3/9/2003]
Race Director
Joined: Aug 2002
Posts: 17,367
Likes: 1
From: Kentucky
Re: MAF question (Tolofou)
You need to make sure the MAF is the problem and not the 2 relays connected to the MAF or some other issue. The MAF is $160 used and the relays are $10 each. I was dealing with an idle problem and set a code 33, but the problem was my IAC valve and not the MAF.
[Modified by hngacurv, 1:13 PM 3/9/2003]
[Modified by hngacurv, 1:13 PM 3/9/2003]
Thread Starter
Pro
Joined: Mar 2003
Posts: 555
Likes: 0
From: Seattle WA
Re: MAF question (hngacurv)
Car seems to run fine.. Is it safe to go as-is? Till I get the new stuff?Chevy garage said just to leave it unpluged... Now this is new to me.. On my other cars the MAF unplugged would stop to motor..
Any problems leaving it as-is?
Rob :steering:
Any problems leaving it as-is?
Rob :steering:
Racer
Joined: Nov 2002
Posts: 471
Likes: 0
From: Queens NY
Re: MAF question (Tolofou)
I don't know if it will damage the motor or not, but I wouldn't chance it. It would be a shame to ruin a $3000 motor for $20 worth of relays or a $160 mass air.
I had the same thing, but I got coded 33,34,36. My problem was the relays but yours sounds like the meter itself. Make sure it's clear, and if you dont feel comfortable buying a new one yet, check ebay for a $40 one and see if you get and progress :cheers:
I had the same thing, but I got coded 33,34,36. My problem was the relays but yours sounds like the meter itself. Make sure it's clear, and if you dont feel comfortable buying a new one yet, check ebay for a $40 one and see if you get and progress :cheers:
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Re: MAF question (CarAteMyMoney)
It'll be fine as logn as you don't drive the car much and don't do no hard driving..
It is a 'safety' mode built into the car. As long as you plan to fix it within the next few days it should be ok.. just going to run poorly that's all..
It is a 'safety' mode built into the car. As long as you plan to fix it within the next few days it should be ok.. just going to run poorly that's all..
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