asaliba920

Hey Everybody,

I have these codes on my 2000 Maxima and the car has 125k. The codes are P0300, P0325, and P1130. Also I just did a head gasket on it and the car hasn't been running right since . I would be at a light just waiting and the rpm would drop to below 500 and would start going up and down (example 700-500, 500-800 then back to like around 600-700ish) i feel like the manifold may be cracked in one spot, but I'm really hoping not. Any help would be great.

The Wizard

iTrader: (43)

The rpm going up and down sounds like a vacuum leak.

P0300 is a cylinder misfire (the specific cylinder isn't decoded)
P0325 is the knock sensor code. It's often a piggyback code to misfires, so ignore it for now. Fix your other issues, clear codes and see if KS code returns.
P1130 swirl valve code.
See this thread for some insight
https://maxima.org/forums/4th-genera...oid-valve.html

asaliba920

Do you think my manifold may be cracked in a small spot?

The Wizard

iTrader: (43)

Anything is possible since you said you had a blown headgasket. Could be warped block, warped head, cracked manifold etc.
Why did the headgasket blow?
Did you put everything back together per the FSM torque specs etc?

You may have to visit a mechanic that has one of those smoke machines to pinpoint where the potential leak is coming from.

asaliba920

Well I am a mechanic, and the headgasket blew because I had a antifreeze leak on my way home from Rhode island.. the car drives fine after I get passed 30-35 mph. And yes everything was tightened on to the dealer specs

greaseyoda

Diagnostic Procedure
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greaseyoda

Description
If DTC P1130 is displayed with P1165, first perform trouble diagnosis for DTC P1165.




SYSTEM DESCRIPTION
This system has a swirl control valve in the intake passage of each cylinder.

While idling and during low engine speed operation, the swirl control valve closes. Thus the velocity of the air in the intake passage increases, promoting the vaporization of the fuel and producing a swirl in the combustion chamber.

Because of this operation, this system tends to increase the burning speed of the gas mixture, improve fuel consumption, and increase the stability in running conditions.

Also, except when idling and during low engine speed operation, this system opens the swirl control valve. In this condition, this system tends to increase power by improving intake efficiency via reduction of intake flow resistance, intake flow.

The solenoid valve controls swirl control valve's shut/open condition. This solenoid valve is operated by the ECM.

When engine coolant temperature is below 10°C (50°F) and above 55°C (131°F) , swirl control valve is kept open regardless of above condition.

COMPONENT DESCRIPTION


Swirl Control Valve Control Solenoid Valve
The swirl control valve control solenoid valve responds to signals from the ECM. When the ECM sends an ON (ground) signal, the solenoid valve is bypassed to apply intake manifold vacuum to the swirl control valve actuator. This operation closes the swirl control valve. When the ECM sends an OFF signal, the vacuum signal is cut and the swirl control valve opens.

asaliba920

Thanks I'll be sure to try all that