2007 Nissan Hardbody 3300i - Answered Questions & Fixed issues

Question edited for clarity and English. Question moved from Computers category. Clean Throttle Body and MAF. The TB is carboned up and not closing shut. The ECM tries to compensate resulting in rough idle.

Find a similar truck in a junk yard, and pull the part....

a pickup , hardbody means pickup bed walls are double walled, only. aka D21 pickup? USA car, " ? not told engine there, lots of engine world wide, but ours is but 1. USA> 2.4L? Iine 4 cylinder. guess #1 real name of real engine by them.. 2.4 L KA24E I4 (1990-1997) in the USA the EPA banned all those screws. by law. the idle speed is fully computer controlled. all USA cars, idle speed is regulator fast by the PCM using device called IAC/ISC/ has 2 wire IAC. IAC is bolted to TB lower side base, 2 wires. if Idle hot is not at 800RPM and not regulating there are 3 common causes.

1. ISC is stuck (needs cleaning)
2. vacuum leaks, makes the ISC useless. (over-ranged) cracked vacuum lines and more.
3. thermostat bad,engine never gets to 180f up. temp.

the screw here is factor OEM calibration called the never touch screw. yellow circled. this screw sets idle duty cycle to 50% as covered in the real service manual seem carb guys monkey this screw and IAC and PCM go nuts. if was messed with by others I set mine to 0.001" gap TV to bore inside the TB bore'/

Spray a little starter fluid into the throttle body. if it starts, then you have a fuel problem. Possible that the pump is not making connection. If so, hit the tank close to where the fuel pump is located to give it a jolt.

Check the idol position control.

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This oil is going somewhere. How old is the vehicle and how many km has it done? Older high mileage engines will start to burn oil as the internal parts wear through use. The amount of oil your losing for each km travelled isn't a large amount. So might not show up as a leak or blue exhaust smoke. As Brett Duxbury asked Is there is oil in the coolant tank? This is a sign of a possible blown head gasket.

Question edited for clarity. Not sure how you 'service' and ECU, as it is a hard wired computer management system with no serviceable parts. For rough idle and shaking I would start with spark plugs and then go onto cleaning the throttle body and MAF. Your ECU Question may be better answered in the specialist Nissan forums in this link. There is some help in the link as well. https://www.google.com/search?q=replace+ECU+of+2001+Nissan+Hard+Body+2.4+petrol+model+with+a+Dictator+Management ..

Fit a pressure gauge to the fuel system , if the pressure is to specs . flip the gas pedal it should rise a few psi , if not check the fuel pressure regulator most have a vacuum hose attached check there is vacuum there . as for the brakes check for faulty master cylinder or rubber flex hose . you can do this by letting a little brake out of the system .

Exactly which bolts do you need the torque settings for? There are hundreds of bolts on a vehicle and they all have different torque settings.

https://www.justanswer.com/nissan/2ibj9-torque-steps-cylinder-head-90-model.html

https://www.google.com/search?sa=X&source=univ&tbm=isch&q=what+are+the+cylinder+head+and+piston+bearings+torque+settings+for+Nissan+hardbody+2001+model&hl=en&ved=2ahUKEwjrj_nX5dnuAhX8lEsFHbAcDocQjJkEegQIAxAB&biw=1366&bih=625

This link might help: https://www.google.com/search?q=How+can+I+replace+fuel+pump+on+Nissan+1987?&source=lmns&bih=625&biw=1366&hl=en&sa=X&ved=2ahUKEwiA4PvB9bbuAhXEA3IKHXrBBUoQ_AUoAHoECAEQAA

Blocked filter, damaged spline drive. Have a look!

next to the blower motor

Check fuse. Look in your owners manual for which fuse it is.

Nissan does not have an inertia switch.

Should be on return hose to the radiator.on keen before hose.

Depends on what type of problem you are having. Is the fuel pump putting out too much fuel pressure of is it not putting out enough pressure to make the car run?? Does it run bad first thing in the morning when it is cold or after you have it all warmed up? What type of fuel are you using? Is the fuel filter clean and able to allow the fuel to pass without a restriction? Is there a good 12 volts getting to the pump? If not, check your connectors.

If blocking the return fuel line helped restore proper fuel pressure,the fuel regulator may be defective.