Jul 24, 2015, 4:33 PM
Last edit by: IB Advertising
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I cleaned my TB now high revs @ idle
CF Beginner
Joined: Apr 2018
Posts: 3
Likes: 0
A week before, the temperature gauge was rising 1 point up and after 30 seconds its come down to normal.
I searched on google and then replaced the thermostat valve and coolant also. After that problem solved.
But yesterday it happened again, Could not understand, why it is happening after changing the coolant and thermostat valve.....
what about temperature sensor? can be reason??
These all things are happening after the throttle cleaning.
I searched on google and then replaced the thermostat valve and coolant also. After that problem solved.
But yesterday it happened again, Could not understand, why it is happening after changing the coolant and thermostat valve.....
what about temperature sensor? can be reason??
These all things are happening after the throttle cleaning.
CF Beginner
Joined: Apr 2018
Posts: 1
Likes: 0
Yeah, keep driving it. Did mine 3 nights ago and have driven it quite a bit since. It has gotten a lot better but I have read that some people have had to drive theirs a couple hundred miles before returning to "normal" idle behavior. Like I said, mine has improved a great deal, yet, now & then upon start rpms will jump up but when I shut off and restart in neutral the shift into Drive is much smoother/ not a hard shift. Driving it's fine. My TB was so gunked up with carbon the truck would stall when stopping or slowing to make a turn. Cleaning straightened that issue out
CF Beginner
Joined: Sep 2018
Posts: 1
Likes: 0
Brake push 3x works!!!
Had same issue with 2009 GMC truck 5.3l
after reading multiple comments & stories. Came across the excerpt
Disconnect battery and push brake pedal 3x, sceptical as I am, I felt like a fool disconnecting the battery then pushing the brakes 3x. Thinking next I would be jumping through a hoop of fire. Surprised when I started the truck, it did just as instructor said. Idle jumped up to 1800 for a few seconds then dropped back down as it said.
Please forgive the lengthy statement.. but remember
KISS keep it simple stupid
after reading multiple comments & stories. Came across the excerpt
Disconnect battery and push brake pedal 3x, sceptical as I am, I felt like a fool disconnecting the battery then pushing the brakes 3x. Thinking next I would be jumping through a hoop of fire. Surprised when I started the truck, it did just as instructor said. Idle jumped up to 1800 for a few seconds then dropped back down as it said.
Please forgive the lengthy statement.. but remember
KISS keep it simple stupid
CF Beginner
Joined: May 2019
Posts: 1
Likes: 0
Thanks
Dont waste your time on a drive cycle. Ive had a low success rate w that. Simply disconnect negative battery cable and pump brake pedal 3x. Reconnect battery and your idle should jump to 1800, then settle down to 900-1000 rpm in park in a matter of seconds. THIS WORKS!
CF Beginner
Joined: Jun 2019
Posts: 1
Likes: 0
Pump Brakes 3X
Had same issue with 2009 GMC truck 5.3l
after reading multiple comments & stories. Came across the excerpt
Disconnect battery and push brake pedal 3x, sceptical as I am, I felt like a fool disconnecting the battery then pushing the brakes 3x. Thinking next I would be jumping through a hoop of fire. Surprised when I started the truck, it did just as instructor said. Idle jumped up to 1800 for a few seconds then dropped back down as it said.
Please forgive the lengthy statement.. but remember
KISS keep it simple stupid
after reading multiple comments & stories. Came across the excerpt
Disconnect battery and push brake pedal 3x, sceptical as I am, I felt like a fool disconnecting the battery then pushing the brakes 3x. Thinking next I would be jumping through a hoop of fire. Surprised when I started the truck, it did just as instructor said. Idle jumped up to 1800 for a few seconds then dropped back down as it said.
Please forgive the lengthy statement.. but remember
KISS keep it simple stupid
After days of reading multiple threads, this seems sensible to try on my 2007 Pathfinder, no offense. My last vehicle was a Yukon Denali. Loved it til the transfer case stopped loving me.
CF Beginner
Joined: Nov 2019
Posts: 1
Likes: 1
Revs @ 2000 only in park and neutral
Ok,
I had to clean the TB. I was getting the stuttering and rough engine at the 25-40 mph zones and the stabilitrack warning a few times.
I took the TB off the vehicle, removed the electronics module. and very carefully with a brush and dry cleaning solvent cleaned the daylights out of it. It is pretty. I was careful to keep the solvent out of the stepper motor assembly and the two sensors on the unit.
I now have the high idle issue, that I did not have before.
I tried the tech service with the tech bulletin 1 update, that did not work. Going to drive it a bunch this evening to see what I can get out of it.
Edit #1 Taking the negative battery lead off the vehicle (not smart anyway!) and pumping the brakes 3 times did not resolve the high idle. I will state that I did this while the car was off and not running. This resulted in a 4K RPM on the next crank of the vehicle however.
Edit #2 I disconnected the battery completely and shorted the cables to each other. I then cycled the key on and off a few times. I left the battery off the system for about 4 hours while I was working on other things. No change. 1800 RPM.
I had to clean the TB. I was getting the stuttering and rough engine at the 25-40 mph zones and the stabilitrack warning a few times.
I took the TB off the vehicle, removed the electronics module. and very carefully with a brush and dry cleaning solvent cleaned the daylights out of it. It is pretty. I was careful to keep the solvent out of the stepper motor assembly and the two sensors on the unit.
I now have the high idle issue, that I did not have before.
I tried the tech service with the tech bulletin 1 update, that did not work. Going to drive it a bunch this evening to see what I can get out of it.
Edit #1 Taking the negative battery lead off the vehicle (not smart anyway!) and pumping the brakes 3 times did not resolve the high idle. I will state that I did this while the car was off and not running. This resulted in a 4K RPM on the next crank of the vehicle however.
Edit #2 I disconnected the battery completely and shorted the cables to each other. I then cycled the key on and off a few times. I left the battery off the system for about 4 hours while I was working on other things. No change. 1800 RPM.
Thank you all for all your support!!
CF Beginner
Joined: Jan 2020
Posts: 1
Likes: 0
Nevermind that snake oil trick is crap!
Nevermind this **** doesnt work you will have to have access to a scan tool! The truck started doing the high idle again and the trick didnt work a second time screw these modern computers!!!!!
so got a 2010 4.8 1500 silvarado here. I was fixing to have a heart attack because after doing the thermostat, cleaning the engine to find a leak, and cleaning the throttle body due to a tps performance code p0121 i was getting, the truck revved right up to 2k. I watched a youtube video where a guy said never to f*** with the throttle body because the only way to get it to stop is with an expensive scan tool to force the computer to relearn the idle. But this right here worked for me! No $5000 scan tool needed! You saved me! Thank you! After this scare i think ima buy a proper scan tool anyway! Anyone know if the harbor freight $999 scan tool will performe advanced stuff like an idle relearn?!
