2001 nissan pathfinder p1130

[droze]

hey guys new to the forum dont usually frequent car forums myself

so i see there are quite a few topics on this have done the tests i have seen on the site have not figured it out yet and am about to pull my hair out.

here is the short version of the story of where i am at. the valve cover gaskets on my pathy where starting to leak oil on he exhaust manifolds so i ended up replacing them. not as bad of i job as i first thought and took my time to make sure i didnt miss anything.

after getting it all back together and double checking all my work as i went i started it up and let it idle to check for any leaks all was good after a couple minutes the engine light came on so i checked it and got p1130 swirl valve control so i took to the internet to see what others have done.

so far i have checked all vacuum lines for blockages all was good. put a vacuum gauge on and was able to open and close the swirl valves with that. moved on to testing the swirl valve solenoid by putting 12v to it and it worked. checked the power wire at the swirl valve plug and had 12v there as well.

the rpm will also jump up and down if i hold them around 1500 or so. about a 400rpm jump.

only thing i can think is the ground may have been damaged when i moved the harness to gain access . i did clean the engine and rinse down with low pressure water hose dont know if this may have damaged something i am no nissan expert so any help is appreciated.

2001 nissan pathfinder
3.5
auto
4x4

thanks in advance

Dan

[droze]

i also just opened up the harness at the passenger side of the engine and found the wires tested from the connector to there an have continuity on both to the connector.

really has me baffled. does anyone know where the ecu is located in the vehicle? i would like to test it to there to make sure i dont have any opens in the wire.

also are there any other sensors that can cause this issue as a by product of them not functioning properly? saw a thread where one guy ended up replacing tps and issue went away just dont want to throw parts at the problem

thanks

Dan

[droze]

last post on this. think i am going to have a shop look at it.

found the ecu and have continuity through the wires. i started the truck to take a look. when the engine is cold the swirl valves work as they should being shut at idle and opening when the throttle opens also no rpm jumping issues. when the engine reaches operating temp then the problem occurs swirl valves stay in the closed positon and rpm jumps up and down when given throttle.

has to be another sensor not functioning correctly causing he issue i just dont have a scanner to test it with

[04pathse]

saw a thread where one guy ended up replacing tps and issue went away just dont want to throw parts at the problem

I read somewhere that someone else was getting the same code, they discovered that the electrical contacts on either the TPS itself or the connector plug were dirty, cleaned them and it solved his issue, might be worth a shot.

If that doesn't fix it maybe go ahead and replace the TPS, you can get one on ebay for around $15 shipped, it is not OEM Nissan though. An OEM Nissan would be over $100. I did see a Hitachi brand TPS which is likely the exact same as the OEM Nissan on ebay for around $60 shipped.

Hope this helps

[droze]

Thanks. I will check that when i get back in town today. Probably going to tale it in to be looked at if it doesnt work. I would keep messing with it since i dont drive it daily but i meed it next weekend so gotta get it done.

[shawnsnico]

I am also fighting a 1130 code on my 2002 PF. I replaced the swirl control valve and most of the accessible vacuum lines but no luck yet. I did have a question for you or anyone else familiar with this issue. When I put 12 V on the swirl control valve solenoid I get a click and hear air flow but the actuator doesnt move. I can connect a line directly to actuator and get it to move by sucking on the other end of the hose. I am thinking I might have a leak on the vacuum chamber? There is also a vacuum line that comes off the back side of the chamber that I cant get to unless I pull the chamber itself. I am concerned about this one as it goes down under the intake manifold somewhere. does anyone know how hard this vacuum line is to replace? I have pulled the intake manifold on another PF to replace valve cover gaskets but hate to do it just for this.

[droze]

well i went ahead and got a bosch obd II scanner and figured the problem out.

so when the swirl valves where having issues i had had the hoses on the vacuum canister mixed up even though i had marked them. swirl valves where working as they should and i didnt notice it but light was still on because i had no way to clear it(went to autozone to read it originally) i had changed the hoses before i verified working so mixed myself up. the rpm issue was still existing so i ran a data log and found the tps voltage was changing drastically when the rpm was bouncing. pulled the plug and problem went away going to install a new tps just waiting for it to arrive.

all should be good after that. thanks for the replies i will update if anything changes

[droze]

There is also a vacuum line that comes off the back side of the chamber that I cant get to unless I pull the chamber itself. I am concerned about this one as it goes down under the intake manifold somewhere.

I would have to see a picture of the chamber i think yours may be different than mine unless you are refering to the metal lines that run over the top of the engine sorry unclear on what you are saying.

The vacuum hose that looks like it goes down under the intake manifold should be for the swirl valve vacuum actuator the one up on the front is the power valve actuator if i al emembering correctly.

They may have made changes in 2002 and i am wrong.