Throttle Body Clean

carnau · January 26, 2018

2 hours ago, txab said:

I always remove mine completely for cleaning and have never had an issue

It's not a throttle body issue it is a PCM issue. You could clean it anyway you want but if the PCM refuses to relearn the new idle and you're sucking a lot of air from cleaning where the carbon coking use to be. Now you have a 1/16 air gap in the the TB where it makes your vehicle race. Like I said replacing it with a new throttle body will not even fix this. It has to relearn the idle in the PCM and sometimes... It just won't.

bgbdwlf2500 · January 26, 2018

2 hours ago, carnau said:

It's not a throttle body issue it is a PCM issue. You could clean it anyway you want but if the PCM refuses to relearn the new idle and you're sucking a lot of air from cleaning where the carbon coking use to be. Now you have a 1/16 air gap in the the TB where it makes your vehicle race. Like I said replacing it with a new throttle body will not even fix this. It has to relearn the idle in the PCM and sometimes... It just won't.

You win again, took like 15 mins, truck back to normal. Answer me this though. Is it worth buying a tech 2 at 250 bucks? I'm sure there is a lot of diagnosing it could still do to help with many issues or am I wrong?

GhostWriter · January 27, 2018

4 hours ago, bgbdwlf2500 said:

You win again, took like 15 mins, truck back to normal. Answer me this though. Is it worth buying a tech 2 at 250 bucks? I'm sure there is a lot of diagnosing it could still do to help with many issues or am I wrong?

Well, I don't really want to sound like the grumpy ol' man that I truly am, but you were advised, adequately, after the first response.

Once the throttle cable was eliminated from the equation, many of us have learned to be more careful with our GM throttle bodies.

No need for anyone to try to be legends in their own mind.

bgbdwlf2500 · January 27, 2018

14 hours ago, GhostWriter said:

Well, I don't really want to sound like the grumpy ol' man that I truly am, but you were advised, adequately, after the first response.

Once the throttle cable was eliminated from the equation, many of us have learned to be more careful with our GM throttle bodies.

No need for anyone to try to be legends in their own mind.

At the end of the day the throttle body was not harmed, it was never going to fix itself and relearn where it should be. I tried at least 6 times to do a relearn procedure with it, unhooking the battery anywhere from 1 hour to overnight. I wasn't saying your response was not valid by any means, maybe it will relearn if you clean it regularly, this one had probably not been cleaned in 8 years or 128k miles of which I only put 25k on. The fact that the computer compensated for the dirt and the truck was running great means I should have left it alone until it fails and replace it. Then still have to go to the dealer to have it reset. I almost bought a$180 throttle body thinking I had messed it up by moving the blade by hand when in reality the fix was free even not driving to see carnau. My bottom line with cleaning at this point is I see no difference in the way the truck runs so I will never clean it again since the computer is compensating for it. Truck idles at 600 rpm just as smooth as it did before.

carnau · January 28, 2018

On 1/26/2018 at 5:36 PM, bgbdwlf2500 said:

You win again, took like 15 mins, truck back to normal. Answer me this though. Is it worth buying a tech 2 at 250 bucks? I'm sure there is a lot of diagnosing it could still do to help with many issues or am I wrong?

I love my Tech 2 so I would say absolutely!

tbarn · January 28, 2018

For 4k 15 years ago you got a genuine Tech2 and a genuine Candi module. For $250 - 350 you get a Chinese knockoff. Probably fine for an average Joe. But I wouldn't do SPS programming with it.

two_wheeled · November 15, 2018

On 1/26/2018 at 3:36 PM, bgbdwlf2500 said:

You win again, took like 15 mins, truck back to normal. Answer me this though. Is it worth buying a tech 2 at 250 bucks? I'm sure there is a lot of diagnosing it could still do to help with many issues or am I wrong?

I had all of these same issues. I replaced the TPS and cleaned the TB and then did the relearn procedure (idle 3 minutes, off 60 seconds, etc.). It still took two weeks of driving around town to get it to relearn the rest of the way. Now it's good.