20 Most Recent 1998 Nissan Altima - Page 7 Questions & Answers

Go back to where you got the work done if you can.If not then i would get the oil preasure checked as the low light tells me the preasure is below 8 psi and the ticking is from the lash adjustors at the tappets verifys low preasure too.

Sounds like some rather serious electrical problems, if it isnt the fuses. In your manual, you should be able to find your fuse box, and located all of the fuses for each individual problem. If it isnt the fuses, I doubt many mechanics can fix the electrical systems, and if they can, it will cost $$$.

Check battery voltage at rest. You should have 12.5 volts, no lower. If lower, then replace battery of not holding charge.When running check battery charging rate. It should go up to around 14 volts when engine revving.If you have an issue with either of these then you are looking at an alternator fault or battery fault.

What i did is remove the check engine bulb coz even if you change the knock sensor the light will still go on coz our engine is a bit old.

This could be your wheel bearing,raise front end on bad tire side and grab tire and move it around to see if it is loose,http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?fromSearchPage=true&pageId=0900c15280265793&partName=Front+Wheel+Bearings&partId=0900c15280265793

Buy a new oneIf you can't find one in the aftermarket,cut one off in the salvage yard

This means the nox readings are to high , this car is listed as a 1998 Altima is this correct? if so why are they testing for nox?High nox readings can be due to engine running hotter than normal or egr system not operating .

probably flooding and ruined catalytic converter

Very possible. The water pump will be run by the timing belt behind the engine cover and on the same side of the motor as all your external belts. Make sure there are no hoses close by that could be leaking and if not it will probly be the water pump. Usually they will make a noise when they are failing. Remeber if it is just a drip and it is hot outside if you run your air conditioning it will drip water from the condenser as well.

The only proper way to do that is to fix the problem that is causing the check engine light (fault codes). Take your car to any major parts store...Checker or Autozone for example. They will plug into your computer and read any fault codes that it might be producing. There should be no cost for you to do this. They should be able to give you the codes, and tell you what the code says might be causing the problem. This is a good start if you are mechanically saavy....If not you'll end up having to go to a repair shop, but at least you will have the code information to back up their suggested repairs to the car.

Primary ignition is not a part it is a system.

did you check to see if the fan comes on at all

No AC will not make it overheat... first thing i would do is replace the thermostat,sound like the problem if there is no leak and coolant level is full.....hope thjis helps and if so please rate this post.