I am trying to diagnose an issue I am having between 1,000 and 2,000 rpm when accelerating. I get a slight misfire / intermittent hesitation / bucking around 1,500rmp and in a range a little above and below. Seems to do it hot or cold, and sometimes it is not there at all.
Not so bad in 1st, but very noticeable in 2nd , 4th, and sometimes in 5th. But like I said, sometimes (not so much anymore) it is not there at all. I do not notice anything at all over 2,000rpm and the truck is running really well. It does seem to be idling a little rough, but nothing major or that bothers me.
No CEL on. The plugs are original. I run quality brand gas (no grocery store gas for my rides) and it has a fresh pcv valve, k&n drop in, and fuel fiter.
When the misfire / bucking takes place, the RPM’s do not change at all or shoot up, thus leading me to believe it is NOT the clutch trying to slip. However, I am concerned w/ this feeling b/c all of my autos did this before the torque converter or tranny gave out on them (usually around 185k or so) – so I am paranoid it may be a slight clutch slip. This is myt first manual to drive that is actually mine, so I am not too familiar with them and how to diagnose them.
Any ideas on how I can isolate this problem? Thanks!!
I am trying to diagnose an issue I am having between 1,000 and 2,000 rpm when accelerating. I get a slight misfire / intermittent hesitation / bucking around 1,500rmp and in a range a little above and below. Seems to do it hot or cold, and sometimes it is not there at all.
Not so bad in 1st, but very noticeable in 2nd , 4th, and sometimes in 5th. But like I said, sometimes (not so much anymore) it is not there at all. I do not notice anything at all over 2,000rpm and the truck is running really well. It does seem to be idling a little rough, but nothing major or that bothers me.
No CEL on. The plugs are original. I run quality brand gas (no grocery store gas for my rides) and it has a fresh pcv valve, k&n drop in, and fuel fiter.
When the misfire / bucking takes place, the RPM’s do not change at all or shoot up, thus leading me to believe it is NOT the clutch trying to slip. However, I am concerned w/ this feeling b/c all of my autos did this before the torque converter or tranny gave out on them (usually around 185k or so) – so I am paranoid it may be a slight clutch slip. This is myt first manual to drive that is actually mine, so I am not too familiar with them and how to diagnose them.
Any ideas on how I can isolate this problem? Thanks!!
Well sounds like you might have a misfire what you can do to see if its a miss or a slip get up to 25 MPH and go into 5th gear and put the pedal to the floor if you have a slip you motor will slowly start to spool up if you have a miss you will feal it starting to misfire!
Something similar was happening to my truck: I had coil number 4 bad...
Quote:
Originally Posted by 20004x4F150
2000 F-150, 4.6, 4x4, 5speed, 66,000 miles.
I am trying to diagnose an issue I am having between 1,000 and 2,000 rpm when accelerating. I get a slight misfire / intermittent hesitation / bucking around 1,500rmp and in a range a little above and below. Seems to do it hot or cold, and sometimes it is not there at all.
Not so bad in 1st, but very noticeable in 2nd , 4th, and sometimes in 5th. But like I said, sometimes (not so much anymore) it is not there at all. I do not notice anything at all over 2,000rpm and the truck is running really well. It does seem to be idling a little rough, but nothing major or that bothers me.
No CEL on. The plugs are original. I run quality brand gas (no grocery store gas for my rides) and it has a fresh pcv valve, k&n drop in, and fuel fiter.
When the misfire / bucking takes place, the RPM’s do not change at all or shoot up, thus leading me to believe it is NOT the clutch trying to slip. However, I am concerned w/ this feeling b/c all of my autos did this before the torque converter or tranny gave out on them (usually around 185k or so) – so I am paranoid it may be a slight clutch slip. This is myt first manual to drive that is actually mine, so I am not too familiar with them and how to diagnose them.
Any ideas on how I can isolate this problem? Thanks!!
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