My car started sputtering please help
#1
My car started sputtering please help
My car just started doing this a few days ago but I was low on gas so I thought I was just low on gas. But before I go into the description I'll let you guys know what I'm working with. I have a 1999 5 speed max, with a vq35 swap. The car sputters and hiccups when I accelerate. The check engine light does not flash and there is no misfire codes. I did get pull a code of P0120 which is a TPS sensor circuit malfunction. Before I got changing that I wanted to get some input. Also the car idles at about 1200 rpms, and when in gear both moving and not it shoots up to about 1700 rpms. I am not driving it now because I don't want it to get worse or have some kind of trickle effect where it causes something else to go wrong. Let me know if there's anything I should should try before replacing the sensor, and if I do have to replace it can someone point me in the right direction of a how to because I know the TPS sensor has to be at a certain position as its position sends the ECU a certain voltage or something like that. Thanks in advance guys.
#5
#6
I had something that sounds a lot like this a few years ago. My car would randomly sputter and bog down, especially bad when trying to turn left at an intersection with oncoming traffic. Made the car a real pain to enjoy driving.
Anyway, after a while of troubleshooting, I replaced the Mass Air Flow sensor, immediately fixed the problem and it hasn't come back since.
Anyway, after a while of troubleshooting, I replaced the Mass Air Flow sensor, immediately fixed the problem and it hasn't come back since.
#7
While probably not the most common fix... I had a leaking upper intake that caused all kinds of sputtering/rough running symptoms that everyone told me was this sensor or that sensor... wouldn't hurt to put a torque wrench on the upper intake manifold bolts.
From page EM-11 of the service manual.
dersh.
From page EM-11 of the service manual.
Intake manifold collector
Tighten bolts and nuts to 18 to 22 Nm (1.8 to 2.2 kg-m, 13 to 16 ft-lb) in numerical order shown in the figure.
(Left to right - 4,1,2,3)
Hope this helps. (couldn't get the bolt pattern image (figure) to show up... sorry, I'm kinda new at this)Tighten bolts and nuts to 18 to 22 Nm (1.8 to 2.2 kg-m, 13 to 16 ft-lb) in numerical order shown in the figure.
(Left to right - 4,1,2,3)
dersh.
Last edited by dersh.z; 01-26-2011 at 11:20 PM.
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