Emissions problems

[jrichker]

Hey "jrichker"

I saw under the hood behind the passenger wheel well.There was a small black container above two small containers. Do all three container come together?

I can't quite picture what you are talking about. Let's try a vacuum diagram courtsey of Tmoss & Stang&2birds. Maybe you can use the diagram to answer your question.

See http://www.veryuseful.com/mustang/tech/engine/ for more good stuff...

 

[SamSnyder]

The air injection divertor valves may help SLIGHTLY, but mine have not worked for years, and that has not stopped me from passing CA smog. I have had codes 94 and 44 for many years now, and basically ignore them. But I pass smog fine with GT40 heads, E303 cam, an MSD6A and a BBK 2.5" cat h-pipe. Assuming it runs good, and you have cleaned out the idle air bypass and EGR valve as I said, the other tuneup stuff is OK and the O2 sensors are good, I would start thinking about a new h-pipe before spending much time screwing around with the air injector system. I'm not convinced it does a heck of a lot and all other things being equal, new cats make about the biggest difference.

 

[davs5.0]

I ran my 331 thru e-test and failed the first time. Did some tune up stuff and actually hooked up my smog pump again this time. Ran a heater hose to the air inlet on the factory h-pipe to make it functional. Now the two things I did that seemed to help the most are retard the timing. I just turned it down until the motor started bucking and went back till it stopped, probably running no more than 5 or 6 degrees. And turn down your fuel pressure, as low as you can to keep it running. Use 87 octane and get the car hot. Should pass if you are already close.

 

[amplifier28]

When I refered to the two small black containers I meant the two solenoids. Both the "Thermastor Air Diverter Solenoid" and "Thermactor Air Bypass Solenoid". Where is the "diverter valve" located? Can I buy the Thermastor Air diverter solenoid and diverter valve at an auto parts store such as autozone?

 

[jrichker]

I really do recommend that you go back & read my post on how to troubleshoot the problem. The post that starts "A trip to the j/y gets you the solnoid valve you need." has the how to check the solenoid valve and the vacuum operated diverter valve.

That will save you time & money and get it fixed without hurting your wallet so much.

 

[amplifier28]

You have convinced me to go that route first!