2000 v6 reduced engine power
#1
2000 v6 reduced engine power
it starts and runs fine most of the time but if i am city driving and stopping a lot the engine will pulse. Revving itself 100-200 rpm. and theneventually at one of the stops the car will sputter and rev the engine quite a bit, up to about 2000 rpm, and I will get a reduced engine power light. if I turn the car off and leave it for a while it will start and run normally again until it gets put in the circumstances mentioned above. I have been keeping a very close watch on the temp guage but it never gets above half way.
For some background, I replaced the fuel pump about 6 months ago. There is a very slow oil leak at the pan, i keep the oil topped off though. There is also a coolant leak that i havent been able to track down yet. The plastic coolant elbows were cracked so i replaced those and that slowed the leak down quite a bit but I am stiil losing some. Also there is no chech engine light on. I am gonna have it looked at but i would love any suggestions as to what this might be. Thank you.
For some background, I replaced the fuel pump about 6 months ago. There is a very slow oil leak at the pan, i keep the oil topped off though. There is also a coolant leak that i havent been able to track down yet. The plastic coolant elbows were cracked so i replaced those and that slowed the leak down quite a bit but I am stiil losing some. Also there is no chech engine light on. I am gonna have it looked at but i would love any suggestions as to what this might be. Thank you.
#2
It happened again and this time the check engine light came on. It threw P1516- throttle actuator control module, throttle actuator position performance.
P0137- oxygen sensor cicuit low voltage. Bank 1 sensor 2.
If any body could shed some light on what those mean I would appreciate it.
P0137- oxygen sensor cicuit low voltage. Bank 1 sensor 2.
If any body could shed some light on what those mean I would appreciate it.
#4
In your model car the idle speed is controlled by the "drive by wire" TAC system. The TAC controls both idle speed and throttle valve opening. You may want to take a look at this link. P1515 P1516 Engine Power Reduced - Ask the GM Technician - GM-Trucks.com
#5
The V6 does have a lot of problem with the drive-by-wire throttle system. The code you are getting does go along with the symptoms you reported. P1516 is indicative of a response feedback issue with the throttle control, sometimes caused by a defective throttle body. The problem with these codes, is that they are sometimes caused by other issues, since a rough running engine can cause other erratic readings. I would get a generic PC OBD2 scan program ($25) and watch the two throttle position readings while slowly pressing the accelerator pedal. They should match and be in smoothly-changing proportion to the amount the pedal is pressed.
Thread
Thread Starter
Forum
Replies
Last Post