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2000 sts stalls and torque converter acts up


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hello everyone i am new to this forum and hope to figure out my problem. I have a 2000 STS that i bought a little more then a month ago. it has 136 000 km i dont know what kind maintenance has been done to it. My main concern is it stalls when at a stop sign most of the time only once and a while, this morning it did it when i started it, was just sitting in park and stalled.

Another thing is when i leave my house about 2 miles down the highway, something will jam in the tranny and my engine almost stalls, sometimes leaving work if i go WOT when its still cool, it will jam up so hard that its as if i hit something, then its fine.

it only stalls and acts up when its cool, it will never stall after ive been driving it for a while. ive gone through this forum and cant find the answer, today i went to store and when i turned the corner i gave it gas and left off as it was shifting, so it stalled, then wouldnt start for a good 4 minutes. first time doing that ever. my engine light is on, but i dont have any thing to test for the codes.

what i will do tomorow is clean my TB do i just spray carb cleaner into it??

any other help would be apreciated, i love this car and im only 18. :)

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On your 2000, the stalling is probably crank sensors.

Your car will tell you what is wrong with it.

You can pull and display all the codes your self.

1. Turn ignition ON to illuminate the dashboard.

2. On your climate controls locate WARMER and OFF buttons and press them simultaneously for a few seconds until you see some codes on the driver information center (DIC).

3. Be prepared to write them down as they progress.

4. Turn ignition OFF.

5. Repeat the steps if you missed something.

6. Post the written down trouble codes here,

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On your 2000, the stalling is probably crank sensors.

Your car will tell you what is wrong with it.

You can pull and display all the codes your self.

1. Turn ignition ON to illuminate the dashboard.

2. On your climate controls locate WARMER and OFF buttons and press them simultaneously for a few seconds until you see some codes on the driver information center (DIC).

3. Be prepared to write them down as they progress.

4. Turn ignition OFF.

5. Repeat the steps if you missed something.

6. Post the written down trouble codes here,

i dont have a warmer and off button, my temperature is turned up by a nob and not a button, also there isnt an OFF button, i would need to press the same nob that is used to regulate my temperature.

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On your 2000, the stalling is probably crank sensors.

Your car will tell you what is wrong with it.

You can pull and display all the codes your self.

1. Turn ignition ON to illuminate the dashboard.

2. On your climate controls locate WARMER and OFF buttons and press them simultaneously for a few seconds until you see some codes on the driver information center (DIC).

3. Be prepared to write them down as they progress.

4. Turn ignition OFF.

5. Repeat the steps if you missed something.

6. Post the written down trouble codes here,

i dont have a warmer and off button, my temperature is turned up by a nob and not a button, also there isnt an OFF button, i would need to press the same nob that is used to regulate my temperature.

alright i figured it out, but i messed something up. it had a bunch of history codes all with the PCM and 2 current ones. when i got to the end it said erase all codes? and i shut the key off. then i went to grab a pen and paper and tried it again and no codes showed up. so i reset it all and the car runs alot harder feels great. ill wait and see if the engine light comes back on cause its off right now.

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The codes will come back, wait a few days and check again, and post them here.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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what i will do tomorow is clean my TB do i just spray carb cleaner into it??

No, you remove the intake ducting and block the throttle plate open. Spray and scrub the TB bore and throttle plate until it looks new.

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ok i got the codes here.

HISTORY

DIM u1016

PCM p1599

TTM u1016

CURRENT

PCM P0340

PCM P0341

PCM P0385

P0340 - Camshaft Position (CMP) Sensor Circuit

P0341 - Camshaft Position (CMP) Sensor Performance

P0385 - Crankshaft Position (CKP) Sensor B Circuit

P1599 - Engine Stall or Near Stall Detected

U1016 - Loss of Communications with PCM

From the codes... the stalling is caused by the crank sensor and possibly by the cam sensors.

When replacing the crank sensors... replace "BOTH" of them, not just one.

Bad crank sensors are fairly common on the 2000 models.

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ok i got the codes here.

HISTORY

DIM u1016

PCM p1599

TTM u1016

CURRENT

PCM P0340

PCM P0341

PCM P0385

P0340 - Camshaft Position (CMP) Sensor Circuit

P0341 - Camshaft Position (CMP) Sensor Performance

P0385 - Crankshaft Position (CKP) Sensor B Circuit

P1599 - Engine Stall or Near Stall Detected

U1016 - Loss of Communications with PCM

From the codes... the stalling is caused by the crank sensor and possibly by the cam sensors.

When replacing the crank sensors... replace "BOTH" of them, not just one.

Bad crank sensors are fairly common on the 2000 models.

hmmm i read on here that the crank shaft sensors are easy to get to, how about the camshaft sensors? and does any one of you have the part number? or know where i can get it and the price. thanks alot.

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ok i got the codes here.

HISTORY

DIM u1016

PCM p1599

TTM u1016

CURRENT

PCM P0340

PCM P0341

PCM P0385

P0340 - Camshaft Position (CMP) Sensor Circuit

P0341 - Camshaft Position (CMP) Sensor Performance

P0385 - Crankshaft Position (CKP) Sensor B Circuit

P1599 - Engine Stall or Near Stall Detected

U1016 - Loss of Communications with PCM

From the codes... the stalling is caused by the crank sensor and possibly by the cam sensors.

When replacing the crank sensors... replace "BOTH" of them, not just one.

Bad crank sensors are fairly common on the 2000 models.

hmmm i read on here that the crank shaft sensors are easy to get to, how about the camshaft sensors? and does any one of you have the part number? or know where i can get it and the price. thanks alot.

Rockauto.com...

http://www.rockauto.com/catalog/raframecatalog.php

It is listed under the IGNITION category...

ACDELCO Part # 2131580 {#10456628, 12575483, 213811}

us.gif ca.gif SENSOR,CM/SHF POSN

$57.79

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