Dies while stopped

[84GNTTYPE]

For the past couple of weeks, whenever I start my car (usually cold) it runs fine and then when I get to the end of the driveway and stop, it tries to die and me and sometimes does. It only happens then, it doesn't happen once my car is warmed up and I stop at a stop sign. My car ran fine, and then I pulled the headers and had them welded and put them back on with copper gaskets. I also repalced the oxygen sensor with a Bosch unit. Could it be the sensor?

Thanks

 

[racemybuick]

coulb be 02

It very well could be the o2 sensor, but check everything else just to be sure. Check all plugs and wires, make sure all are lined up and in right order. Check the FP if you can when starting up...you could have a vaccum leak...It definately sounds like the o2, but just make sure everything else is in order. You should get the T-link, or scan master. It would make your life a lot easier!

john

 

[xxninja]

if you got your bosch from autozone, they have a lifetime warranty, just swap it out, and try the new one, most it is gunna take is 5 mins to take it out .

But........in my own opinion,
I'd say its probli not the o2 sensor , if its only happening when the car is cold, or not very hot.

Most computer chips dont even put the O2 sensor into play until the car is atleast 150 degress
i believe it is called "open loop"
its where the car runs at set values until the car warms up !

do a search of, "open loop"
you will lean about this feature.
do you run any certain time of chip in your car?

If the car revs up and down alot when started, you make have some vacuum leaks, spray some TB cleaner over the hoses and EGR area and listen for the car to rev up.

i personally would lean towards looking for a misadjusted IAC (idle air controller) on the throttle body.
the thottle position sensor could also be not at the correct voltage

You can unscrew the IAC motor underneath your throttle body and You can spray some throttle body cleaner on the IAC motor and clean it up a bit . The make sure it is properly adjusted to Turbo buick specs.

i know that would cause 1 real lousy idle, and make it stall and fall on its face, where u have to feather the pedal just to get movin '

but i would definately look into, making sure the car has a properly set IAC and TPS

if you can borrow a scanner or a SCanMaster, this makes this process way easier


your do a forum search for

IAC RESET,
or
TPS SET

If still confused.........

Make a Post for "how do i set my IAC and TPS

some1 will gladly send ya links on how to do this !



hope my babbling gives ya sum ideas

 

[84GNTTYPE]

Thanks for the input guys. I likely won't mess with it until next year since it will be going into storage next week since I am leaving for college. It definitely gives me some ideas on what to look at next spring.

I hoping to buy a T-Link or an OTC 2000 this winter or early spring and get things tuned up and running right.

Thanks again.