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You are watching: How to replace 2005 nissan sentra swirl control valve

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Error code P1138 Swirl Control Valve
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i have a 2001 sentra with 250,000 thousand miles with a 1165 code which is swirl control valve control vacuum switch. My coolant level was a few inches low in the reserve tank. I refilled it and reset the code but it came back on. maybe a coolant flush would help??? I"m also wondering if the "vacuum switch" is the same thing as the "boost switch" which is at the top left corner of the engine compartment by the ecm Heres what nissan says about it
• Uses an ECM-controlled vacuum-operated actuator• Controls intake manifold air velocity through all rpm ranges for improved performanceand emissionsDuring low speed operation, the valve closes to increase the velocity of air in the intakepassages, producing a swirl in the combustion chamber. This results in the followingimprovements:• Increased burning speed of the gas mirememberingsomer.comture• More complete combustion• Lower emission levels• Improved fuel consumption• Better idle quality
The OBD code P1138 came up for my friend"s 2003 Nissan Sentra. His car would only start after the third attempt and one day it did not start up at all. I went to the dealership in person and they told me that this part was covered under the emissions control warranty which is 15 years/ or 150,000 miles. Prior to going to the dealership a local shop quoted me $560 for the whole intake unit plus labor, so please check to see if your car is still under waranty with a dealership. This car made the warranty with 120,000 miles. Best of luck.matadorinc
That code is for the swirl control valve. Usually it is caused by the position sensor. Unfortunately the only way to get it is to buy the lower portion of the intake manifold.
I have a p1138 code On my 2005 nissan sentra.. unfortunately i was told you have to purchase the whole lower intake.. Even though the valve itself is held on by 3 bolts and a c-clip.. Which would be easy to replace.. But leave it to Nissan to make things more costly.. Very disappointed
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So is this a warranty issue? Or, should I just get rid of this car? Not paying $800 or whatever to replace a simple part. Can I take the car to a dealership and erememberingsomer.compect to get this minor issue resolved, or get raked over the coals? This is my Fiancee"s car, and I need to make sure this gets taken care of. Erememberingsomer.comperts, please advise!
For those Sentra owners having a code P1138 coming up on the "check engine" light, it"s a swirl control valve. The code came up on my Sentra 03 in 2010 but I erased it before I can take it to the dealer. I"ve read in the forum that it is a part of the emission and it is warranted for 15 years/150,000 miles. So when the code came up again 2 weeks ago I took it to the dealer and talk to one of their service rep. The service rep was so helpful that he did his own research, looking at the VIN number my car was covered, at the same time the rep also found a bulletin about the electric fuel pump and it was also under warranty. So the swirl control valve and fuel pump were replaced. I did not pay anything, even the diagnostic. By the way the 15 years/150,000 miles is a California emission warranty. I don"t know about other states. Check with your dealer.


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