ArtBasement
Erwin Timmers
Up front, this is not a question about my X per se, but a general engine running question (like my 2007 Nissan van ;-) You guys are my best go to car guys, so I'm hoping for some tips or suggestions
I'm having running problems with my van, subtle and intermittent, and no codes yet. Idle will be smooth, and suddenly start to stumble and hesitate a little and then revert back to smooth. The cold seemed to make things worse and I even had some stumbles and jerkiness while travelling at speed, but outside of last week, I have not felt any hesitation while driving. I've had other issues recently, that may or may not be of influence. The fuel pump had to be replaced after it stopped mid-driving. Then my gas guage seems to be out of whack and show 1/4 tank while it's really empty. I've also replaced 3 of the 6 coil packs
At that time many codes were retrieved that could have something to do with running out of fuel. One showed a purge valve malfunction, so they replaced that. There was an ide speed code, and also a transmission code.
They retaught the computer, but I'm still having the above hesitation issues. I got the purge valve code again this week, and idle speed too high.
I'm trying to think of what it could be: could a vacuum leak cause this? Would a vacuum leak be more pronounced at idle and in the cold? Changing spark plugs on this thing requires undoing the intake manifold. I used a new gasket, but maybe I messed up.
Or a bad computer? I sealed the computer with Never Wet since it lives right in the drip tray under the windshield and was already starting to show corrosion. Now I wonder...
Grateful for any other suggestions.
I'm having running problems with my van, subtle and intermittent, and no codes yet. Idle will be smooth, and suddenly start to stumble and hesitate a little and then revert back to smooth. The cold seemed to make things worse and I even had some stumbles and jerkiness while travelling at speed, but outside of last week, I have not felt any hesitation while driving. I've had other issues recently, that may or may not be of influence. The fuel pump had to be replaced after it stopped mid-driving. Then my gas guage seems to be out of whack and show 1/4 tank while it's really empty. I've also replaced 3 of the 6 coil packs
At that time many codes were retrieved that could have something to do with running out of fuel. One showed a purge valve malfunction, so they replaced that. There was an ide speed code, and also a transmission code.
They retaught the computer, but I'm still having the above hesitation issues. I got the purge valve code again this week, and idle speed too high.
I'm trying to think of what it could be: could a vacuum leak cause this? Would a vacuum leak be more pronounced at idle and in the cold? Changing spark plugs on this thing requires undoing the intake manifold. I used a new gasket, but maybe I messed up.
Or a bad computer? I sealed the computer with Never Wet since it lives right in the drip tray under the windshield and was already starting to show corrosion. Now I wonder...
Grateful for any other suggestions.