RPMs bouncing in neutral, I'm panicking now.

[Egyptshun]

I don't know what the problem here is but when I'm in neutral the RPMs do this.

CPU? Intake? I'm just so confused by this. Only thing I have extra in my car is 2 lowbeam HIDs, 2 ballasts, and a harness for the HIDs.


http://www.youtube.com/watch?v=tk2CPNeyCv4

[$peed]

What year is your car? I wonder if your O2 sensor is going and the temperature certainly isn't helping. Maybe it is misreading the amount of O2 intake and playing with the fuel to accommodate. That's a strange thing. When you are in a low gear low speed, will it push your car in a similar manor?

[m_bisson]

Turn the a/c off. Set it to floor vents only.... Does it still happen?

[Zotaga]

lol.. that's definitely not normal.. but why are you cruising down the road in neutral to begin with? Does it hop around when you're in D at say.. a traffic light?

[SKyactivmanny]

If it makes you feel any better my throttle seems to be sticking. I put it in first and slowly release the clutch and away the car goes without me pressing the gas, rather fast too I almost hit a car. I do notice that the gas pedal is not aligned with the rest of the pedals but somehow its not affecting the rpms when its in neutral. In a way i like it cuz i wont stall but it may be bad for the engine.

[Egyptshun]

Solution: Clean the throttle with a spray and a rag.
I found that disconnecting my battery to install those HIDs reset the CPU, and it acted like the throttle was clean so it kept bouncing the RPMs to find a good idle. So I cleaned the throttle and gee wiz it was so much nicer. I felt the shifts and acceleration were smoother because of it too. So if you habe this problem, clean you throttle.

[sarujo]

^ +1

Erratic idling and surging seem to be the norm if you clean your TB/MAF and don't reset the ECU, or if you reset the ECU by say replacing a dead battery and the TB/MAF are dirty. Either way, the two seem to be go hand and hand. Not exactly a fun thing to do in the dead of winter after replacing a battery.