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2005 Nissan Sentra Surging Idle once warm and throwing code P1273
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william516
Novice
Feb 24, 2014, 9:41 PM
Post #1 of 6
(4183 views)
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2005 Nissan Sentra Surging Idle once warm and throwing code P1273
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Long story short, this car sat for a long time while I was away. When I came back the battery was dead. Someone was supposed to keep the engine turned over at least once a week and let it run. Well that never happened. When I came back the car would not run and the fuel has sat for almost a year.I changed the battery, drained the fuel, cleaned the fuel pump and filter, replaced the gasket on the fuel pump. I was able to limp her home and the engine was running like crap. Little to no power and then surging RPMs. I looked on the forums and did some more work. I took apart the air filter housing, replaced the air filter, replaced all the spark plugs, pulled the MAF and cleaned it with MAF cleaner, Pulled the throttle body and cleaned it with throttle body cleaner.I have done the throttle body relearn, but have no clue if it works.When I let the car reach the correct running temp the idle will surge from about 1500 to 1800-2000rpm. It will then drop back down and repeat this forever.If the car is placed in drive the rpms will drop down to the correct readings and the car seems fine. I cant really take her out on the road is the registration / insp has expired and the car cant be inspected until the problem is corrected and the mil is out.I did notice that if I am revving the engine and let it off the rpm will jump around before coming back down. On the small test drives around the streets around the house. I noticed the rpms can be erratic if I gun the engine and let off right away the tachometer will jump around too.The MIL light came back on and it read P1273. I looked this up and see that it is a code related to o2 sensors and other things.I'm looking for some help. I have gone to a Nissan dealer before and they tried to screw me over so bad for simple repairs and I don't trust a dealer anymore. They only want money and "throw parts and the problem" I prefer to troubleshoot the problem and get the "right" part. could someone please direct me in the right direction. I don't have a ton of money to dump into this car to chase this problem.The car is a 2005 Nissan Sentra 1.8dohcapprox. 90KThanks for any help that you can provide.
2005 Nissan Sentra
1.8dohc
approx. 95K Miles
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Feb 25, 2014, 2:41 AM
Post #2 of 6
(4161 views)
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Re: 2005 Nissan Sentra Surging Idle once warm and throwing code P1273
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Quote ">>I have gone to a Nissan dealer before and they tried to screw me over so bad for simple repairs and I don't trust a dealer anymore.<<"
If that place didn't work out for you why not try another? What that sounds like to techs here still at it or retired is that YOU just don't trust mechanics but somehow know whatever problem was simple? If so simple why didn't you just do it?
Unfortunate to have a car just sit for a year like that. No clue how you "cleaned" a fuel pump or reset any "relearn" to this car.
* Why not register this thing and drive it a bit more unless unsafe now? Generally you have a week to get an inspection sticker at least and an emission fail you have another 30 days to correct.
* Didn't see where you changed oil even if fresh when you left it.
* MIL light doesn't work and then does? That alone can be a problem. It's going to throw O2 codes running lousy and spraying cleaners into throttle body IMO without a chance to drive it a few miles if basically running OK to clear out some.
If still lousy you are at risk of burning out the converter. If this was just sitting outdoors there will be assorted problems you didn't park it with like brake rotors and surprise things that wouldn't have gone bad if used now and then.
I don't think you can know until you get this going and use it. Some things you can and have seemed to do with it in place and some I think you'll need some help with. Unfortunate to just let it sit,
T
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Discretesignals
Ultimate Carjunky
/ Moderator
Feb 25, 2014, 5:43 AM
Post #3 of 6
(4152 views)
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Re: 2005 Nissan Sentra Surging Idle once warm and throwing code P1273
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Cleaned the fuel pump and filter? How did the inside of the tank look? What did you clean off of the filter and pump?
I'd say you should start by throwing a pressure gauge on it to confirm fuel pressure. If fuel pressure is good, you need scan tool data information.
Have you considered taking it to an independent repair shop since you had a bad experience at the dealer? Ask friends and neighbors who they recommend.
P1273 is basically a lean code and you have to figure out why the engine is running lean or why the A/F sensor is detecting a lean shift.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Feb 25, 2014, 5:46 AM)
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william516
Novice
Feb 25, 2014, 7:00 AM
Post #4 of 6
(4140 views)
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Re: 2005 Nissan Sentra Surging Idle once warm and throwing code P1273
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Sorry I did not mean to come across rude or as a know it all. I am far from that when it comes to cars. But my experience with 2 seperate nissan dealers in my area have both been the same. The first was a simple code for my nissan frontier 2001. They wanted to replace the maf and then after paying an arm and a leg for that repair and arguing to keep the part they replaced it with the problem came back. In the end they wantd to replace the ecm computer for a huge price. Through boards and the internet I was able to find the issue was a 02 sensor and once replaced the truck has run fine.the second time was a fuel pump same vehicle. Replaced it never troubleshot the problem. 1000 later coming home died on highway. Towed back where someone found that a connection was bad not the pump at all. Local service dealer argued to try and get my money back even went to nissan corporate but they didnt care they had the money
I agree that it is very sad the vehicle sat for a year I was supposed to have someone run it once a week or so to keep this from happening but when overseas there is not much you can do.
To clean the pump I removed the back seat from the car removed the plastic cover pins, removed the bolts that hold pump in place. Removed pump and pulled it out and cleaned it. The filter is attached to the pump and according to the threads there is not an inline filter. Replaced the gasket and also while is the tank drained all gas from it. Tank looked clean and shiny. Little dirt on bottom. Fresh fuel was added.
What has been done so far has gotten the car to a drivable status, before all this the car barely made it back home with me 5miles or so away. It had no power and would suddenly surge to life if I put the pedal to the floor.
Now it runs pretty good but when in the park or neutral gears will surge between 1500-1900rpm once it warms up. This repeats everytime the vehicle is wamred up and repeats every second or so.
I have not changed the oil yet and will do that too next time I get a second. I have not run seafoam through it yet either to try ans clean injectors. Before my deployment the car ran fine and afrer sitting it runs like described above.
Also I dont know much about ecm but how long does it take for an ecm to get all the information from the sensors. I have no clue how long the battery was dead for. It is a new battery now but im sure it lost all the sensor information etc.
Thanks for the quick reply and I welcome any help from anyone. Again sorry if I offended anyone. .
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kev2
Veteran
Feb 25, 2014, 8:24 AM
Post #5 of 6
(4133 views)
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Re: 2005 Nissan Sentra Surging Idle once warm and throwing code P1273
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vehicle ran ok no issues then put in storage -
Gas deteriorates and becomes an issue with stored vehicles - in storage how long?
the answer will tailor some ideas thoughts...
.... exactly what parts changed- brand is a consideration also
......do you have a fuel pressure gauge? test light? DVOM?
The code P1273 is for a AF ratio sensor* it indicates a LEAN condition...
*AF sensors must be from manufacturer - aftermarket wont cut it and it is NOT a o2sensor
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william516
Novice
Feb 25, 2014, 8:52 AM
Post #6 of 6
(4127 views)
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Re: 2005 Nissan Sentra Surging Idle once warm and throwing code P1273
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Thanks for the reply, vehicle was in storage for about 10 months maybe a little more. After that returned to a dead battery, rusted brakes (yet another thing to fix)
Drained old fuel and pulled the fuel pump cleaned pump tank and the little filter on the pump. Replaced the gasket and reinstalled original pump.
Changed all spark plugs. Not sure of brand but were supposed to be for the make and model car per pepboys. Old spark plugs were in bad shape. New sparks were supposed to be pre gapped. I did not check this and thinking back should have.
Started vehicle and drove to my house apprpx 5 miles or so down the highway. Vehicle ran like crap. See above
Returned to home garage. Pulled battery removed air filter and housing. Changed air filter, cleaned maf with maf cleaner. Removed throttle body and cleaned the throttle body cleaner. Put all parts back together. Started vehicle ran much better. Looked online found article and post for idle relearn. Attempted idle relearn and tps relearn etc. Can not confirm if any of it worked as of now.
Idle now surges from approx 1500-1900 once warm. Does not do this if in drive.
Have not put any injector cleaner into the vrhicle other then an additive into the new gas in the tank.
So far this is where im at. The scanner I have is a cheap pocket scanner shows code p1273 and then a second code p1273 with pd after it. I think I read this means code is pending or cycling.
Have not put any other parts to the problem as of now.
Thanks again for your help and input
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