2002 Xterra XE, 3.3L, 4x4 (101,00mi)
Last 4 months w/ bad miss-firing & engine running rough... very random, at idle, on highway - esp. ~ 60+mph - car is bucking... very intermittent fine for a while then bad.. worse on hills, used to be able to fight through it driving RPMs up, but worse now...
SES light flashes, I've pulled codes myself and gotten P0303 (cylinder 3 missfire) and P0340 (camshaft position sensor 1)...
Both Nissan & Meineke work on this about a dozen times... meanwhile I'm trashing my Cat Convert and who knows what else...
Doesn't seem any worse when it's hot, cold(er) or wet
Replaced spark plugs, wires, ign cap, rotor... fuel system flush...
Very frustrated... Could it be distributor... ignition coil...?
My understanding is one of the cam shafts is VERY hard/laboring to get to, so I can't just change that and see if that's the prob... Distributor seems ok, did a compression test on engine and that was fine...
Last 4 months w/ bad miss-firing & engine running rough... very random, at idle, on highway - esp. ~ 60+mph - car is bucking... very intermittent fine for a while then bad.. worse on hills, used to be able to fight through it driving RPMs up, but worse now...
SES light flashes, I've pulled codes myself and gotten P0303 (cylinder 3 missfire) and P0340 (camshaft position sensor 1)...
Both Nissan & Meineke work on this about a dozen times... meanwhile I'm trashing my Cat Convert and who knows what else...
Doesn't seem any worse when it's hot, cold(er) or wet
Replaced spark plugs, wires, ign cap, rotor... fuel system flush...
Very frustrated... Could it be distributor... ignition coil...?
My understanding is one of the cam shafts is VERY hard/laboring to get to, so I can't just change that and see if that's the prob... Distributor seems ok, did a compression test on engine and that was fine...
