Help with code
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Junior User
Joined: Dec 2004
Posts: 58
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Help with code
Ok,
My friend bought a new to her bronco a little over a week ago. It is a 96xlt, with a 302. The check engine light was on, so I had it scanned at autozone. The only code it was throwing was a miss on cylinder 3. I changed the plugs and wires, the distributor cap and rotor. I just bought a scanner myself, and cleared the codes (I had more afterwards, as I forgot to hook back up a couple vacuum hoses on the passenger side, which I hooked back up). I rechecked the codes, and it came back clean. We drove it around today, and the check engine light came back on. I took it out to the shop and scanned it again, and it came back with a P0411 code, saying the "secondary air injection system incorrect flow". What exactly is this telling me, and what parts should I be looking at? I found 1 post on here when searching for my code, but I'm not sure if it is the same thing, as his bronco was throwing 3 codes, and this one is only 1 code. Any help would be appreciated. Thanks
ddetrick
My friend bought a new to her bronco a little over a week ago. It is a 96xlt, with a 302. The check engine light was on, so I had it scanned at autozone. The only code it was throwing was a miss on cylinder 3. I changed the plugs and wires, the distributor cap and rotor. I just bought a scanner myself, and cleared the codes (I had more afterwards, as I forgot to hook back up a couple vacuum hoses on the passenger side, which I hooked back up). I rechecked the codes, and it came back clean. We drove it around today, and the check engine light came back on. I took it out to the shop and scanned it again, and it came back with a P0411 code, saying the "secondary air injection system incorrect flow". What exactly is this telling me, and what parts should I be looking at? I found 1 post on here when searching for my code, but I'm not sure if it is the same thing, as his bronco was throwing 3 codes, and this one is only 1 code. Any help would be appreciated. Thanks
ddetrick
Senior User
Joined: Jul 2005
Posts: 168
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There is two check valves on the thermactor (air injection) system they are connected with rubber hose back of the engine by firewall- it is common that they need replaced, also check the routing of the Vaccum lines as I re-read your post, this code didn't happen until after you worked on it so I would bet there is a cracked plastic vaccum line somewhere. I'd buy some rubber or silicone line and just replace them all as they will fail at some point anyhow- Bob.
