RPM surging when lightly touching gas
#1
RPM surging when lightly touching gas
I have noticed twice now when coasting down a hill and I have my foot on the gas just very lightly, I can feel the car surging. The RPMs go up and down by about 300 RPM. I have cleaned the MAF, and the throttle body. It does not happen all the time. I tried searching but just found people saying they had high RPMs not an up and down one like me.
#5
That leak can be extremely dangerous. Same thing happened to my friend's brand new Frontier he only had for 6 months. The muthrfckr burned like a demon in hell at a major intersection while he was waiting for the light to turn green.
#6
No smell of gasoline. I think a gas leak is somewhat far fetched. I would guess a failing sensor first. If I had fuel leaking enough to start starving the engine I am sure I would see or smell it.
#11
If you don't smell gas, that's good. That means the leak isn't coming into the engine. Maybe it's from below and leaking into the ground?
Do the RPMS jump a lot when you press further down on the gas pedal? If so, then the problem may related to the throttle positioning.
Do the RPMS jump a lot when you press further down on the gas pedal? If so, then the problem may related to the throttle positioning.
#13
If you don't smell gas, that's good. That means the leak isn't coming into the engine. Maybe it's from below and leaking into the ground?
Do the RPMS jump a lot when you press further down on the gas pedal? If so, then the problem may related to the throttle positioning.
Do the RPMS jump a lot when you press further down on the gas pedal? If so, then the problem may related to the throttle positioning.
This guy must be on crack or something. No idea what his deal is.
Last edited by gapboi210; 11-08-2012 at 08:16 PM.
#15
If you're gonna quote, please make sure your answer is not in what you're quoting. It just confuses us, ok? edit...I see you fixed it. Great. Thanks
Do the rpms go DOWN while your foot is still on the gas? Or only up? They should only go UP when the gas pedal is pressed
Do the rpms go DOWN while your foot is still on the gas? Or only up? They should only go UP when the gas pedal is pressed
#16
it means your car is doing the blinker self-check. Find an assistant to verify all the turn signals are signaling at the proper intervals.
#17
ok going to recap:
Going down hill with the gas pedal slightly depressed the RPMS surge up and down by about 300 RPM repeatedly
Stepping on the gas clears this up and car accelerates smoothly
Taking foot off the throttle makes it idle down and idle like normal.
Going down hill with the gas pedal slightly depressed the RPMS surge up and down by about 300 RPM repeatedly
Stepping on the gas clears this up and car accelerates smoothly
Taking foot off the throttle makes it idle down and idle like normal.
#18
ill clear this all up for you mmkay
that big thing in your driveway, parking lot, street, whatever you have you know the thing with 4 round things in each corner? thats called a car. it has pedals, lights, shifters and even a wheel!! when you push the long skinny pedal down the car makes a funny vvvrroooooomm sound and it goes faster
THIS IS NORMAL
that big thing in your driveway, parking lot, street, whatever you have you know the thing with 4 round things in each corner? thats called a car. it has pedals, lights, shifters and even a wheel!! when you push the long skinny pedal down the car makes a funny vvvrroooooomm sound and it goes faster
THIS IS NORMAL
#19
So what's the issue sounds like operator error
#20
Push the throttle all the way in, if the rpms increase by 5000rpm, then that means that your Throttle Position Sensor is not working properly. Go to autozone and tell them that every time you push the gas pedal, the car wants to go faster.
#32
I didn't say when I press the gas the rpms keep going up. I said while lightly pressing the gas the RPMs surge. If people weren't sure what I was saying the adult thing to do would be to ask. Not post completely rude and ****head posts.
#35
This might be your problem right here...
So in your particular situation, try cleaning the gas pedal.
Of course, there is this golden rule to follow...
#39
Sounds like a small vacuum leak. Happened to me when I was buttoning the manifold up on a DE-k swap. It was small enough to not affect driveability, but surge during light throttle.
#40
Sounds to me like the TPS may have a spot burned out causing it to bounce around. Does it surge if you give it that same amount throttle from a complete stop or only when slowing down?
I'm surprised how everyone is being a douche bag on here. It's been a while since I've been on the org and can't believe the admins even tolerate **** like this.. especially from Paul.. Paul I'm gonna go tell your wife you're being an ******* online again!
I'm surprised how everyone is being a douche bag on here. It's been a while since I've been on the org and can't believe the admins even tolerate **** like this.. especially from Paul.. Paul I'm gonna go tell your wife you're being an ******* online again!