Van is giving codes of P1148, P0130, P0325

DAVIDDLW

MEMBER
1999 NISSAN QUEST
6 CYL
FWD
AUTOMATIC
188,000 MILES

I need help to figure out why my 1999 nissan quest van is giving codes p1148 closed loop, p0130 oxygen sensor, p0302 #2 cylinder misfire, and p0325 knock sensor. My van was missing really bad while driving and I changed out my spark plug wire set and this fixed the bad misfiring. I also installed a brand new oxygen sensor because of the p0130 code. I cleared all codes off computer and drove van 25 miles and the chech engine light came back on with all the codes except the p0302 misfire. Van idled and drove smoothe but every now and then it would miss a little while driving. I would guess this is coming from the 02 sensor code and the 1148 closed loop code. I have been told so much stuff to check and do but I have not yet be able to get the other coded to stay off. I was told to check the vent control solenoid on charcoil canister because these are prone to failure. I did check the vent control solenoid and it operated. I checked the fuse for the 02 sensor, it was good. I made sure all the connect harnesses by the charcoil canister and the 02 sensor had voltage coming through them. And someone told me that the its a sensor eye or somthing in the distributor that may needs to be cleaned off. I took my small blow gun and blew the distributor out, but still no fix. My van still will kinda stumble or miss every now and then, but it is not bad like before. Also I sprayed the intake and vacum hoses with carb cleaner and my rpms did not change on engine so I do not think I have a vacum leak.
I need mechanical help bad. Thanks

1 Reply

DOCHAGERTY

MECHANIC
9,601 POSTS

The thing that jumps out at me first is the tank vent valve fault. The tank vent valve can often cause issues due to the fact that it is being opened and closed and in doing so, it can lose it's ability to seal, it may seem to work, but they do fail and can cause a cascade of other failures. I am not a Nissan savvy technician, BMW is my strong suit, the valve that BMW uses for that function has an extremely high failure rate and can set codes and cause all sorts of mischief. I have found that when dealing with a problem in the realm of modern emission controls, they can be quite logical if you take the time to understand why they do what they do. You might also consider that this issue could be beyond what you can deal with on your own, it might be worthwhile to consider seeking out a Nissan service provider to remedy this problem.