20 Most Recent 1990 Nissan 240SX Questions & Answers

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Check earth strap from engine to frame and battery to frame.

I think that your motor is over heating have it check at a nissan dealer

Sounds like timing. OR it needs a distributor cap and rotor. Pull the cap and inspect the inside contacts. If you see them a "white powder" looking substance coating where there should be brass i the top of that cap, simply replace the cap and rotor button and thank your lucky stars. lol. (Go ahead and give it new spark plugs, while your there. imo) If not, it may have jumped time. Call a mechanic.....

The reservoir is on the inside fender. Find the pump and follow the hose up to it. :-)

1st check all the fuses supporting the HVAC system. Replace all that are suspect. If the fails, be prepared to trace check all wiring and connections in the hvac system.

battery is junk wreck shifted the plates

I had the same problem with a 240 of mine. After I gave up trying to figure it out, I took it to a shop. They replaced the green circuit board that reads where the floater sits and no problems since. May want to look into that.

They are usually held by 2 or 3 bolts and a metal line remove metal line first it unscrews than unbolt. make sure you have a new gasket with it. their is usually a vacume line that just pulls off. Clean area where gasket was .put on new gasket than rebolt to block .

The batteries may not be lasting because you may have a problem with the alternator. If you have a bad alternator the car and the electrical components will drain power directly from the battery instead of taking the power from the alternator. Have the alternator tested to see if it is good.

Try this diagram, it should help you out.

a lot can cause a problem as long as ur not over heating u should be fine but have leak checked out and proper repair made

I would have the transmission fluid and filter changed. Make sure that the shop loosens the valvebody bolts to allow the converter and valvebody to drain, This will expel an extra 2-3 quarts of fluid from the transmission. MAKE SURE THEY ONLY USE ATF+4!!! Very IMPORTANT. Retorque the valvebody to 18 in/lbs and adjust the front and rear bands as specified in the service manual. Also have them check the throttle valve cable adjustment as this is a MAJOR cause of slippage and transmission failure if not adjusted properly. good luck

G'day mate , standard ratio for leaded petrol was 14.7/1 with unleaded fuels it will be slightly higher , around 15/1 due to the lower ' thermal efficiency ' of the fuel. hope this helps

Hi,

You will need to check the crank angle sensor which is on bell housing of the gerbox and also check that the cam timing sensor is working also. This is positioned on the front of the motor on the timing chain cover. Let me know if you need further assistance.

Jason