January 15, 2016 at 6:09 pm #10481
I have a 2008 with about 160K miles, that I have had since it was just 5k miles on the odo. Recently I had a expensive issue related to water in the gas tank. My family had noticed in the last year performance was poor and that the car would stall out if the tank was so empty that the warning light came on. Since mileage has always been poor, we avoided letting it run that low. This holiday season we went on a road trip, and on the way home we drove through heavy rain for most of the six hour trip. we stopped to fill up the tank after about 3 hours and the Quest was very rough after filling up the tank. the rough engine quickly smoothed out and we got back on the highway and completed the trip. We took the van into the Nissan dealership to have the issue looked at, the check engine light was flashing and going on and off.
Dealer found a grounding cable rusted in two, moisture in the ECM and water in the gas tank. We replaced the cable and were told we could resolve the water using HEET and premium fuel This was inaccurateJanuary 15, 2016 at 6:19 pm #10491
over the next week we went through several tanks and bottles of HEET and the issue was not resolved, in fact if there was rain or snow while driving the issue resurfaced at low speeds. At high speeds there was no roughness. Then we decided to take another road trip. the weather was dry but turned snowy on the ride home. The car stalled and would not start while driving on city streets I had to get the van towed back to the dealer.
This time the dealer found the fuel pump had died and they had to drop the tank. they found the small vent tube that runs parallel to the fuel filler neck tune had rusted away completely at one bend and we hypothesize water was being sucked into the tank for a very long time. The service staff claimed to have never seen as much water in the tank (several gallons). BTW they did pressure and smoke test the tank, no leaks.
Now we have a new fuel pump, new filler neck, ECM shows no errors, and no “Check Engine: light is on. Performance is greatly improved.
I think there has been a lot of water in there for months, causing the stall outs when we should have had reserve gas.
- This reply was modified 1 year, 6 months ago by heetsink.
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