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I replaced my cap/rotor along with a full tune-up and went from 15 city/22 highway to 18city / 35 highway. And the highway speeds were at 80-100. At 60-80 mph I averaged 39mpg on a 500 mile trip. This is according to the supermonitor...did check it to be accurate though.

I would be willing to bet it is the tps. You don't have to switch out the throttle bodies. It is simple to check the tps...just follow the tsrm.

glad to here you took the bosch out. I heped a friend of mine put one in his celica and 3 days later it caught on fire and burned the entire car. Sent it back to them and they said it was rebuilt incorrectly causing it to stick in the on position and run at all times. Your problem seems liek...

Take the throttle body off and inspect it to find where the coolant is coming from. If you cant find anything there check your hoses in that area. Should be pretty obvious. It may be running rough if you altered the tps in some way while trying to fix it. Outline: 1.Inspect Throttle Body 2...

Nice way to start. I'm in Pullman if you ever need any help just let me know.

Where do you get the silicone valve stem seals indvidually (set of 24 without rest of seals)? I have only ever seen the ones that come in the kit. Is there a difference in using the silicone over the standard?

I think they are the same. I am not sure on the ratios but I believe the drive shaft attaches the same. Should be easy enough to find out.

if nothing else it cleans up the engine bay enough to work on. Gets old having to take on and off the fan.

Like they said get the codes posted up and do not buy any more parts. Rarely do you see a supra with serious fuel problems so it is probably something else that will be revealed in your engine codes.

Yes all na's have o2 sensors but the are different from the turbos

Pretty much any hardware store has that stuff. Its by the sanding and grinding equiptment. I don't know what you have local but I have bought all of the things your emntioned at home depot, lowes, ace...

mine leaks through the window seal

Do the easy things first by thoroughly checking your igniter and afm. If they are not the problem I was getting this combo when my timing belt jumped time. In your case it definitely sounds like it is electrical.

Sounds like CSI

Sounds like a vac leak. Check codes and think about doing a tune up.

On springs you generally get what you pay for. Save up and get a decent set. You might also check for some used ones to save money

Check the suspension bushings in that area. My car does the same thing and it is because of the play in the bushings.

Junior at Washington State University. Trying to decide between civil and mechanical engineering.

sounds like boost leak Check codes here http://www.cygnusx1.net/Supra/TechTips/engine_error_codes.aspx

check vac lines, check your tps, check to make sure the afm is connected. Also, sounds kind of dumb, but do you have gas?