High Idle at stop sign or in Park
#1
High Idle at stop sign or in Park
Hey guys - just ran into a very bizarre issue. All of a sudden my 2009 Yukon Hybrid started giving me a very high idle when coming to a stop, at a stop, and in park ~1500 - 2000rpm. It doesn't go into auto stop mode it just stays high revving until i start moving, then gets jerky with the shifting because it's at such a high idle. Once i'm cruising though, it's fine.
any thoughts? The only thing that was abnormal was i was my gas tank was close to empty, probably 1/16 tank left.
any thoughts? The only thing that was abnormal was i was my gas tank was close to empty, probably 1/16 tank left.
#3
Re: High Idle at stop sign or in Park
I also would say dirty throttle body or most likely mass air sensor. Especially if you have an aftermarket K&N style "oiled" filter. although K&N filters are very good, they have a tendency to let oil mist accumulate on the mass air sensor & throttle body.
#4
Re: High Idle at stop sign or in Park
thanks for the tips. The throttle body is as clean as can be, it was fully cleaned when i replaced all the plugs and wires about 5K ago. The air filter is brand new and stock, so no K&N oily mess. No vacuum leaks as far as i can tell. I sprayed all the usual suspects with some carb cleaner and no surge. Also checked all the fittings and everything is tight.
This only happened when i was low on gas and hasn't happened since. I'm thinking it's related to low gas (i have no idea how) OR maybe i need a new 12V battery. I know hybrids do some funky things when the battery is going out.
I have yet to get the gas level low enough to try and replicate the problem. I have an extra battery laying around and i already swapped it. If i can get it to happen again, i'll let you all know what i find out. But, i'd be happy if it didn't happen again.
This only happened when i was low on gas and hasn't happened since. I'm thinking it's related to low gas (i have no idea how) OR maybe i need a new 12V battery. I know hybrids do some funky things when the battery is going out.
I have yet to get the gas level low enough to try and replicate the problem. I have an extra battery laying around and i already swapped it. If i can get it to happen again, i'll let you all know what i find out. But, i'd be happy if it didn't happen again.
#5
thanks for the tips. The throttle body is as clean as can be, it was fully cleaned when i replaced all the plugs and wires about 5K ago. The air filter is brand new and stock, so no K&N oily mess. No vacuum leaks as far as i can tell. I sprayed all the usual suspects with some carb cleaner and no surge. Also checked all the fittings and everything is tight. This only happened when i was low on gas and hasn't happened since. I'm thinking it's related to low gas (i have no idea how) OR maybe i need a new 12V battery. I know hybrids do some funky things when the battery is going out. I have yet to get the gas level low enough to try and replicate the problem. I have an extra battery laying around and i already swapped it. If i can get it to happen again, i'll let you all know what i find out. But, i'd be happy if it didn't happen again.
Thread
Topic Starter
Forum
Replies
Last Post