Help! Confused???? Fault code P0305
#1
Help! Confused???? Fault code P0305
Hey everyone, I have searched my problem to no end today and can't seem to make sense of what is going on.
My rover sat for about a week with varying weather 10 degrees at night, highs in the 40's.
It is a 2000 D2, 115k miles
Rotella 15w40 oil, mobile 1 filter
New oem air filter, always 93 octane, Seafoam in gas tank every 3-4 months.
I had the P0305 code with flashing CEL every once in a while at stoplight, so I replaced plugs with Bosch and wires stock because of time. Shop I trust did wires because I am a wimp and don't have a garage at the moment. Got Rover back, no codes took off like a rocket, no issues. I put about 30miles on it and one morning the CEL came back on, then started flashing at stoplight every so often. I went to Autozone and had it scanned and it came back as P0305. I had talked to a guy near me who uses the same gas station I do. About the same time I filled up, he did and had bad gas in his car. Not sure if this may be part of it, but worth mentioning, I was down to a half a tank, so I filled up with Seafoam and went on a 70 mile drive CEL is on, but runs perfect and no flashing at all.
What should I do next? Could it be an O2 sensor or a Coil Pack?
When they have scanned the rover for the codes, it was not running, should I just go buy or rent a scanner and scan it while running/driving to get better data?
Could it be as silly as a new gas cap?
It runs really strong, so I really doubt it is the sleeve issue.
Thanks for any help you guys can give me.
Andy
My rover sat for about a week with varying weather 10 degrees at night, highs in the 40's.
It is a 2000 D2, 115k miles
Rotella 15w40 oil, mobile 1 filter
New oem air filter, always 93 octane, Seafoam in gas tank every 3-4 months.
I had the P0305 code with flashing CEL every once in a while at stoplight, so I replaced plugs with Bosch and wires stock because of time. Shop I trust did wires because I am a wimp and don't have a garage at the moment. Got Rover back, no codes took off like a rocket, no issues. I put about 30miles on it and one morning the CEL came back on, then started flashing at stoplight every so often. I went to Autozone and had it scanned and it came back as P0305. I had talked to a guy near me who uses the same gas station I do. About the same time I filled up, he did and had bad gas in his car. Not sure if this may be part of it, but worth mentioning, I was down to a half a tank, so I filled up with Seafoam and went on a 70 mile drive CEL is on, but runs perfect and no flashing at all.
What should I do next? Could it be an O2 sensor or a Coil Pack?
When they have scanned the rover for the codes, it was not running, should I just go buy or rent a scanner and scan it while running/driving to get better data?
Could it be as silly as a new gas cap?
It runs really strong, so I really doubt it is the sleeve issue.
Thanks for any help you guys can give me.
Andy
Last edited by b_woodroaster; 02-09-2013 at 04:55 PM.
#3
#4
Shop put napa wires on it. Did some of the rest of the major service and ran it a little more. I ended up pulling the codes again to find that I have the multiple misfire code along with the P0307. I pulled the plugs and they normal, no steam cleaning or soaked in wet black oil.
I checked the plugs on the coil and they were seated properly.
I checked the plugs on the coil and they were seated properly.
#5
As a follow up, the engine light went off and has stayed off. I check the oil every week, it looks normal. No Coolant leaks and no drop in the overflow. The coolant has not changed colors either.
I am going to be changing the valve cover gaskets hen the weather finally hits 80 degrees here, but as for the previous CEL, I am stumped.
I am going to be changing the valve cover gaskets hen the weather finally hits 80 degrees here, but as for the previous CEL, I am stumped.
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