I have a 2000 V6 S10 4WD Blazer that stalls frequently, usually when I'm cornering or climbing hills. I just replaced the cap and rotor, plugs, wires, air filter, radiator, hoses, water pump, goose neck, and thermostat. I'm running out of ideas. Weak fuel pump? vacuum leak? possibly related to the clutch or power steering? Any help?!

 

Any codes? Other symptoms (dash going dead or all lighting up)? Cleaned the throttle body and/or EGR valve? Tested fuel pressure (there is a good thread in the Tech Article (DIY) section on this)? Have you tested for a vacuum leak or inspected the vacuum lines?

I hope all of those parts were not replaced while chasing this problem.

 

just removed the pcv, hose was cracked where it connects to the throttle body. my digital odometer, oil temp and gas gauges are acting up/not working. Not sure how to check vacuum pressure or how/where to clean throttle body/egr valve. Going to get new pcv and vacuum hose, going to try to get a code checker but I live on an island where tools, parts and knowledgeable assistance are hard to come by. thanks for your help.

 

That would constitute as a vacuum leak then. See where that gets you.

As far as cleaning the EGR valve and Throttle body goes there are plenty of threads discussing this. There have been some how-to's along the way as well, but they may be temporarily unavailable at the moment. Run a search and see what you come up with.

 

Just replaced the PCV valve and the cracked vacuum hose, still stalls. I got 7 DTCs:

P0122 - TPS/Pedal Position Sensor A Circuit Low Input
P0183 - Fuel Temperature Sensor A Circuit High Input
P0223 - TPS/Pedal Position Switch B Circuit High Input
P1233, P2100, P2104, P2110 - No Deffinition.

I cannot find these last 4 codes anywhere, I can get my hands on a new TPS sensor but need to find out how to replace it. This might be over my head but I appreciate your help anyway.

 

P0122 - Throttle Position Sensor Circuit Low Voltage

That is the only code that comes up in my references for a 2000 s-series... A second digit of 2 doesn't correspond to anything... And there is no fuel temperature sensor on these trucks... What are you using to pull codes?

 

the codes that I posted before were wrong, the scanner was not connecting to my vehicle so they were example codes. the correct codes are:

P0154
P0304
P0336
P0339

Thanks

 

P0154 - HO2S Insufficient Activity Bank 2 Sensor 1
P030x - Random/Multiple Cylinder Misfire Detected
P0336 - CKP (crankshaft position) Sensor Circuit A Range/Performance
P0339 - CKP (crankshaft position) Sensor Circuit Intermittent

I would concentrate on the P0336 and P0339 problems. Inspect the wiring to the CKP sensor (located on the front timing cover at about the 7 o'clock position looking directly at the crank pulley from the front of the vehicle). Also pull the CKP sensor and see if it is dirty. If it is dirty, clean it and reinstall it. If that does not cure the problem and the wiring shows good from the CKP sensor to the PCM, then replace the sensor. Run it like that for awhile to see if it solves your problems. If not, and other codes pop up, diagnose them at that time.

 

Well, I removed and cleaned the CKP sensor and checked the wiring as far back as I could trace it. It didn't look damaged or corroded. When I re-attached the sensor, the vehicle would not start at all. Before it would idle and run but would stall out when I was driving. Is it possible that I could have damaged something by disconnecting the sensor, cleaning and repacing it?

 

Test continuity on the wire between the terminal in the connector at the CKP sensor and the terminal in the connector at the PCM. The schematic is given in the trouble code link I gave above.