Posted: Aug 29 2007 at 12:00pm | IP Logged

I've had my 98 Frontier 4x4 2.4L 4 cyl for two years now with 105k miles.  It is still very drivable but these two things bothers me and would like your thought on how to go about it.  There is no Check Engine light on.

1.  In the morning and expecially after rain, my car bucks,jerks & missed at lower rpm and will not drive unless I floor it to high rpm > 3k.  It fixes it self after about 5-10 minutes of driving.  What could it be.

2.  There is a medium pitch whining noise coming from the engine (kind of toward the front).  I replaced all the belts and the idler pullies seemed to be fine.  I call the dealer and they said that this enging timing chain do not need replaced until about 250 -300k miles. 

Let me know what you guys think.  THANKS....

Posted: Aug 29 2007 at 1:22pm | IP Logged

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gunner;

Posted: Aug 29 2007 at 1:51pm | IP Logged

Thanks for the respond so far.  The car idles perfect.  It is bucking/jerky only when you push the gas in gear and only when it has collected moisture.  I've already use seafoam in the tank and sparkplugs looks great.  I'm thinking it is probably the cap/wires.  Anymore suggestions....