View Full Version : 94 Sunbird Air intake conversion problems.
10-27-2006, 05:56 PM
I have a 94 sunbird with a 2.0 ltr. engine. I converted the hood to a cowl induction hood from a Z24 cavalier and switched over the air filter intake to function with the hood. The car ran fine at first, but after a day or so I noticed that it idles rough, and seems to bog down durring acceleration. How can I fix this problem? Does anyone know?
10-27-2006, 06:32 PM
From what I'm hearing, it's possible it's getting to much air. The air and fuel mixture is not accurate causing a bog down on acceleration. Theres a few factors too look at. 1) is the mass air flow sensor functioning correctly, because if it's not, the computer will not add the correct amount of fuel. 2) when you do a sudden change to the airflow, always rest the computer by disconnecting the battery, that way it may learn a new setting. 3) I would check the fuel pressure. At a weak state it may have kept up to the old airflow. But since it maybe getting more air, more fuel is required. If the fuel pump can't keep up with the demands. Your engine will run sluggish.
10-27-2006, 09:29 PM
Either that, or your "cowl induction" swallowed some debris and contaminated the MAF.
10-27-2006, 10:40 PM
I will try to reset the computer in the morning, I never thought of doing that. I will also take a peek at the cowl for any blockage. Do you think an upgrade from the stock exaust to a high flow muffler might help? The stock muffler has a pipe of only about 1 1/2 inches in diameter.
10-28-2006, 12:00 AM
Saltmine said to check your MAF Sensor for debris..........not your cowl induction hood.
10-28-2006, 12:08 AM
Although I don't think it's going to change the sluggish acceleration. Think of the engine as a big air pump. When you increase air flow through the front, you should do the same for the back side of the engine. The only time you'll see a power difference, is when the engine is at mid to almost full throttle. Increasing the airflow for highway driving use does absolutely nothing. When you drive 60 mph, theres not a real big demand for air in or out of the system.
10-28-2006, 07:31 AM
I highly doubt it's the hood but 1 way to see, switch it back!!
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