Pushy Pushy

[EricT]

Driving down the road in my 97 silverado I can take my foot off the gas and maintain my speed for miles. For some reason the engine wont slow down.
When I apply the brakes the engine rpm's decrease (under load), but when I approach a stop sign (in the snow) my front tires stop but my back tires are still pushing. It has caused some hairy situations trying to get stopped.
The only way I can stop is to drop the transmission into neutral at which point the rpm's go up to about 20k.

I dont know how to adjust the engine idle, but I have lubricated the throttle linkage.
I currently have a check engine message on the dash but no way of knowing what the codes are if I even knew how to check them.

Is there a cheap code tool of some kind out there?
Is there any place I can get the code information?

Help guys, I'm slipping.

[abaird]

That sounds a little scary. There is no idle adjustment, it is all controlled by the computer. A lot of auto parts stores(autozone is one I know for sure) will read codes for free. That will give you a place to start. As far as cheap code readers go, you can pick one up at walmart. All it will do is read codes, if you want a scan tool it will cost you some big bucks.

[1968 Pontiac]

If your back tires are still pushing after you apply the brakes you may want to check if the self adjusters are adjusting your back brakes. Is the brake pedal up at the top or is there some travel before the brakes start applying. An excess amount of travel may mean your back brakes aren't adjusted up all the way. The low brake pedal can be an indicator for some other problems too, but look at your back brakes first.

[bigcoconut]

First of all, you don't have a rear brake problem, you will if this continues, but it isn't your problem. Your engine idle is not slowing when you take your foot off of the accelerator, like it should. I've found most auto parts stores will read your check engine code for free, especially AutoZone, I've used them in the past.

I had this happen on a 91 I used to have, the Throttle Position Sensor went out. Relatively cheap and easy to replace on the side of the throttle body, opposite the linkage. I would get the code checked, that would be a good start.

[EricT]

Thanks Coconut, I thought it might be a sensor or something.
I'm gonna get the codes read and see what that says the problem is.

I'll let you guys know what happened.

Thanks for your help...all of you.