I just meant I have not had a problem with brute force. The first time I did my 2008 it had upwards of 150K.

I completely agreed Don. I have never damage a throttle by just opening by hand. I don't mind the fly by wire, but man can we make the computer's learning curve better?


Update:

for those that care.

Throttle no longer staying stuck all the time at 3000 rpm when it park. Now its 2400 rpm AND its only sometimes. Maybe 2 out of 10 times it goes into park.

Before it would stay at about 1500 rpm when I come to a stop. Now its around 1300 rpm AND it settles down to normal very quickly. Sometimes it does not. About 2-3 times in 10 it stays stuck at 1300.

To give you some time references. This is after 7 days of driving. About 15-16 trips around town.

So it appears like it is continuing to relearn and so it is getting better. BUT man its slow.

Question:

Anyone here know what is typical absolute throttle position for an HHR 2006? And Relative Throttle Position.

For those of you if a scan tool, please let me know.

Thanks.

The absolute throttle positions are "Idle" and "WOT", with varying reference voltages in between.

The ECM should see a reference voltage of 0.3v from the TPS at idle, and approximately 4.5v at WOT.

If the ECM isn't seeing a reference voltage that correlates with the reference voltage coming from the APP sensor, it should set a code.

But I'm wondering if in your case, the throttle actuator motor drive may be off by a tooth or damaged so that the throttle butterfly is hanging up or operating in a jerky manner causing the engine to "hang up" at an elevated rpm.

It seems as if the ECM is compensating, or trying to with marginal success.

From all the recent "cold weather" TPS problems, I'm wondering if they used a summer weight lube on the gears.

Or if the lube is drying up due to age, even though the throttle butterfly drivetrain is "sealed".

843de - I want to watch you walk into your local dealer and ask for "butterfly grease"!!! ;)

OK, Guys the sky is not falling when it comes to the throttle.

Update:

MY THROTTLE IS BACK TO NORMAL!!!!


well 90% there.

My guess 2 or 3 more days of driving at the most.

Removing the battery, pulling the ECM fuse did not do much if ANYTHING.

I bought a cheap diagnostic scanner. Cleared the ECM and after 1 drive, the next time I took the car out it was 80% better.

Nothing wrong with gears, nothing wrong with throttle.

Computer does relearn, but slow. Clearing ECM with scanner is the best way.

What is left for the ECM to learn is minor at this point. IF there was something physically wrong with the throttle it would not be getting better, especially not by this much.

Do not scare people into thinking they destroyed their throttle.

Specs for those with scanners:


My Absolute Throttle is 15.3%

My Learned Throttle is 3.9%

As you can see from the numbers, very minor learning still needs to happen, but VERY minor.

Hope this information helps the next person.

That wouldn't even faze them, you know my sense of humor, the parts counter lady didn't even bat an eye when I asked for "Muffler Bearings".:D

Guille, I'm very happy to hear that your ECM and throttle are on speaking terms again, and honesty we weren't trying to scare you or anybody else about destroying or damaging the throttle body.

It's just the fragile nature of the things.