******* The last part "i did this on my 4g, and it ran ALOT smoother" was a mistake i didn't do it yet. it was from the old forum.

 

I just want to make sure I don't mess anything up. I can just pull the plugs, dump a teaspoon of seafoam in each of the holes, and let it sit for awhile. It doesn't need to be vacuumed out or anything?

I'm assuming it'd be a good idea to change the plugs after doing this. How long should I wait before I change the plugs?

 

Seafoam works pretty well, Autozone is selling it now as well.

As long as you don't put more than a teaspoon or so in the cylinders, you should be fine, if you put more than that in, leave the spark plugs out and crank the engine to spew out any excess after you've let it set. Then put in the plugs, let it smoke out and you'll be fine. Shouldn't really even need to change the plugs out as a result of the seafoam.

For valves and such, just take a vacuum line loose that goes directly into the intake manifold, but not to a specific cylinder, and let it suck some seafoam through while the engine is running.

Or, you can just add the seafoam to the gas and it'll work also, though I haven't tried this method.

 

Yea, I went ahead and added a 1/2 pint to my crankcase and gas. I have a second pint to use on the other stuff, but just wanted to clarify everything.

Thanks.

 

So I did all that stuff, and sprayed out the throttle body and now I'm getting code 17 (Vehicle Speed Sensor). Not only that, but when I put it in Park or Neutral, my throttle jumps up and down from about 700-1400. Has any of that happened to anyone else?

 

Oops - double post.

 

I don't think that stuff is a good idea.

 

The VSS is in the transaxle. It's an unrelated problem.

 

Since my speedometer is working fine and all, what could be the problem?