dirtridinz71
I'm Awesome
Since early winter my 98 has had a small miss to it, but since I hardly drove it I never looked into it to much. Now I'm looking to sell it and want it to be running good. The miss only seems to happen with light acceleration and when at a steady speed, it idles smooth and works fine if drove "aggressive". Strange part is after about 20 minutes of driving it begins to run like normal with no miss. While missing the tack holds steady and the miss cant be felt, just hear it popping out the exhaust.
Earlier this week I drove it and it set off codes P0306 (cylinder 6 missfire), P0327 (knock sensor 1, circuit low input bank 1) and P0161 (02 heater circuit bank2/sensor 2). Cleared the codes and the truck ran fine for the rest of the day, thought maybe a tank of fresh fuel had fixed the problem.
That was a wrong assumption, since it had the same miss today, again after driving 20 minutes or so it ran fine. This time it only set codes P0327 and P0161 (it has been setting off the o2 sensor code randomly since I've owned the truck).
With selling the truck I dont want to spend any more money then I have to on it. I have a OBD2 scanner with liverun data but no idea on what to look at on it. I have swapped out the number 6 spark plug and wire, hoping the code may follow that but no luck. Plugs are like new and properly gapped, compression is also good. I remember reading a similar problem to this not long ago but I've searched for a few evening with no luck of finding it.
My thinking is that the knock sensor code is being set off due to the missfire/detonation? If so that is not much help.
Is the only way to test the plug wires by checking the resisitance? What should they read?
Could it be possible that moisture/condensation is collecting in the cap/rotor from sitting? It wouldnt last that long would it?
Timing? Wouldnt the SES be on if out more then 2*
Does it sound like fuel related, possible "spider" failure?
Any more info would be great. Again I want to be able to eliminate all that I can without just buying parts hoping to fix the problem. So suggesting to just do a full tune up is not any help. Thanks
Earlier this week I drove it and it set off codes P0306 (cylinder 6 missfire), P0327 (knock sensor 1, circuit low input bank 1) and P0161 (02 heater circuit bank2/sensor 2). Cleared the codes and the truck ran fine for the rest of the day, thought maybe a tank of fresh fuel had fixed the problem.
That was a wrong assumption, since it had the same miss today, again after driving 20 minutes or so it ran fine. This time it only set codes P0327 and P0161 (it has been setting off the o2 sensor code randomly since I've owned the truck).
With selling the truck I dont want to spend any more money then I have to on it. I have a OBD2 scanner with liverun data but no idea on what to look at on it. I have swapped out the number 6 spark plug and wire, hoping the code may follow that but no luck. Plugs are like new and properly gapped, compression is also good. I remember reading a similar problem to this not long ago but I've searched for a few evening with no luck of finding it.
My thinking is that the knock sensor code is being set off due to the missfire/detonation? If so that is not much help.
Is the only way to test the plug wires by checking the resisitance? What should they read?
Could it be possible that moisture/condensation is collecting in the cap/rotor from sitting? It wouldnt last that long would it?
Timing? Wouldnt the SES be on if out more then 2*
Does it sound like fuel related, possible "spider" failure?
Any more info would be great. Again I want to be able to eliminate all that I can without just buying parts hoping to fix the problem. So suggesting to just do a full tune up is not any help. Thanks
