Wont pass emission count is at 3 needs to come down

SOURCE: 98 Saturn SL 1 sputters

Have a scanner hooked up to your car and do a data stream to see if your knock sensor is still working. On a heavy load, if the ECM detects detenation in the engine, it will automatically want to ****** the timing to make it run better on a load.

SOURCE: car wont start

At first, I thought 'coil pack'. But you said it tried to start. So that's out. You might check that you're getting spark just to be thorough.

Did it ever start again after the stall on the interstate?

If not, I'm leaning towards the timing chain.

What happens if your timing chain broke:

• The timing chain no longer turns the cam(s)
• The cam(s) no longer open/close the valves
• The valves become stationary, remaining open or closed depending on the position of the cam(s)
• If even one valve is open in a cylinder, no compression.
• No compression, no start.
  

SOURCE: 1997 Saturn SL1 standard with

any check engine codes.a bad o2 densor can cause this, prm running high? could be the intake gasket leaking or a faulty tp
sensor...

SOURCE: Saturn 2000 SC1 failed emission test high NOX, put

I'd change fuel filter, get it low on fuel. Add a bottle of rite aid 100% rubbing alcohol. Nothing fancy. Nothing scented or colored.

Add it and fill up your tank of gas.

I've done this with old cars and trucks.

Most recent was my 77 for highboy. Emmissions guy said it's emmissions were lower then most cars he saw! Let alone and old crappy ford.

If it were my car I'd drive it hard the whole way there. This may or maynot break loose carbon buildup in your cats, which will also help. By drive hard I mean higher Rpm then usuall. Don't race it, or drive dangerous. Just trying to get *** much pressure buildup in the exhaust to knock some of that **** out of there.

( been building cars for 10 years daily. You'd be suprised what little things will do to help) goodluck to you.