2003 Nissan Pulsar Randomly Stalling

Hi all,

I have an issue with a 2003 Nissan Pulsar (Auto), where lately, the power would randomly cut out. This also happened a few months ago, but then went away.

  • Backstory -

In January this started happening. Driving along the car would randomly jerk, almost like tapping the brake pedal (or running low on fuel). I thought perhaps the fuel was dirty or contaminated with water, so didn't think much of it. Later on the car would stall at the lights and wouldn't start (eventually it did). Then not long after, I was driving and the car was pulling up, like pressing the brake pedal harder a few times, before driving normally again. I also noticed the RPM needle would bounce (from higher revs down to zero, then back up, then down), which led me to think the engine was attempting to seize, though the engine temperature wasn't 'Hot'. Eventually at the lights again, it would stall, but managed to start up and get home, but this time it gave me an engine warning light.

Once home, I opened the hood and noticed engine cooling empty. There appears to be a leak coming from the top plastic radiator tank, though it looks like it's coming from perhaps the seal between the tank and the radiator body (perhaps the seal has deteriorated?). A quick inspection I couldn't see any cracks/holes/damage to the tank itself, and can't see additional radiator leaks. I've noticed coolant getting lower over a period of time but never got around to fixing it, always just topped up.

Reading online I read that overheating engine can cause the car to shut off, though the temp gauge didn't go any higher than normal. I topped up the coolant, and ran the car. In the meantime, I had to manually check the engine light code and it was telling me a Crank sensor. I was planning on replacing it, but since topping up the radiator fluid, the fault hasn't been back and eventually the light went out.

  • 5 months later -

Now 5months later, and the issue has come back. Looking at the radiator coolant (still leaks), it wasn't empty this time (though I topped it up anyway). I also opened the heater-core by putting on the heater and blowing the hot air while I ran the car, thinking it might displace a possible air bubble. I inspected the coolant level during this period and didn't notice a decrease. This time it also gave an error code again, which read 0335, which seems to be the Crankshaft sensor again.
The car will shut off even during night driving (winter) and after 5minutes driving. I drove to work one night (5min drive) and as I pulled into the car park, the car cut out. I had to steer it into a car spot, which was much harder than non-power steering. I also noticed applying the foot brake was near impossible, it was pretty hard.

Before going out and buying a new Crankshaft sensor, is there anything else you suggest I look at? Perhaps it's another fault that isn't related to the Crankshaft sensor, yet is causing the Crankshaft sensor error to display ??

Have you guys experienced an issue like this before?

Questions:

  1. Besides the obvious, being a possible Crankshaft sensor issue (as per the error light), is there something else that could cause it to throw that error?

  2. The first time, I topped up the coolant and worked fine after that. Is there a possible connection there? If not, why would the car run OK afterwards, or was that likely just a coincidence >?

  3. Why was the steering and brake pretty hard to operate after the car cut out ?

  4. Is there anything I can put into the cooling system to help plug any leaks? (besides buying a new radiator).

Thanks in advance,

Comments

  • +6

    I read the thread heading and the first thing I thought was “crank sensor” without even reading the thread. Such a common issue for these Pulsars.

    1: not really. If it says crank angle sensor, that’s usually what it is. Only other issue could be just a bad/dirty/corroded connection or broken wiring.
    2: most likely coincidence. Coolant has nothing to do with crank angle sensors
    3: because power steering is run from a pump on the engine, no engine, no power steering. Brakes run off vacuum assist, so no engine running, no vacuum assist.
    4: yes, but I don’t recommend it. What you need to do is find the cause of the leak. Putting stop leak in is only like putting a bandage over the real issue. (InB4: cRaCK An EgG aNd aDD sOmE PePPeR tO tHe RaDiAtOr!!!)

    • Thanks for the reply, pegaxs. :)

      I'll have another at the coolant leak, though from what I've seen, it looks as if it's coming from the where the tank seals to the radiator. The leak looks like it extends across the tank rather than a single spot too. I'll dig a little further, see if I can narrow it.

      If it is the seal, is it possible to remove the plastic tank and re-seal ?

      I'll poke around the wiring too, see if there's any breaks, or animal chew marks.

    • +1

      Definitely sounds like Crank sensor, I had a sweedish motor from the same era as this nissan with same issues. $65 bucks and some fettling and swearing later she fired right up, the old sensor was mildy dirty but I think the magnets in the unit may have been duffed. Swapped the plugs at the same time for sanity and thing still purrs, this was about 2 years ago. Great call.

    • This

      Also how old is the battery?

      • Battery is about 6months old.

    • +1

      Just use the potato from the potato compartment.

      • Unfortunately I don't believe this model came with a potato compartment.

  • +2
    1. Besides the obvious, being a possible Crankshaft sensor issue (as per the error light), is there something else that could cause it to throw that error?

    Codes mean the car has read that error, what is actually causing it is the challenge to work it out. We had a car that was throwing all sorts of codes. Tried replacing one part, no help. Eventually worked out it was a bad earth lead, not replaced when the head was replaced.

    1. The first time, I topped up the coolant and worked fine after that. Is there a possible connection there? If not, why would the car run OK afterwards, or was that likely just a coincidence >?

    Probably a coincidence.

    1. Why was the steering and brake pretty hard to operate after the car cut out ?

    Engine power cuts, the power steering pump cuts and the brake booster vacuum assist cuts too. You will usually have one or two stops in reserve for braking, but power steering will stop immediately the engine stops.

    1. Is there anything I can put into the cooling system to help plug any leaks? (besides buying a new radiator).

    What if it isn’t the radiator leaking? You need to work our where the leak Is coming from.

    • Thanks for the reply, Euphemistic :)

      re: #1, that's sort of what I'm hoping to avoid. Don't want to throw money at it if there's something else causing it. I'll have a poke around, see if there's a loose/damaged wire.

      Coolant definitely leaking. I started the car and could see it coming up on the edge of the tank. Looks to come from the tank seal area, though not sure if it definitely is or not, will inspect further. Can you replace the seals on the tanks ?

  • +2

    Replace the crank and cam sensors at the same time. Very common pulsar issue.

    Pressure test the cooking system to properly locate the leak rather than randomly replacing parts.

    • Thanks for the reply, Brendanm :)

      I remember reading about having (or recommending) to replace both sensors rather than. Any recommendations on where to buy? Nissan quoted me about $100ea, but have read you usually get them as a pair for the same price.

      Pressure test the cooking system to properly locate the leak rather than randomly replacing parts.

      Will need to get a pressure tester radiator cap, unless there's another way to do it without one ?

      • +1

        You'll be able to get them from any of he usual parts places, bursons, global, Repco etc Should be readily available online as well.

        Any decent radiator shop should be able to do a pressure test for you.

  • +1

    When my old pulsar had random stalling issues at idle it was a sticky IACV, a throttle body clean sorted it. Might be worth checking this too.

    • Thanks for the iforgotmysocks :)

      Oddly enough, I had removed and cleaned the throttle body prior to this happening the 1st time. I replaced the battery with a new one, but doing so threw the Idle out of wack, car idled poorly. Apparently changing the battery meant the idle air control had to be re-learnt, and because the throttle body was filthy, it was idling poorly. I removed it, and gave it a good clean, but meant the car was idling at a higher rpm afterwards. I ordered and replaced the gasket, then manually did the idle air relearn, now it seems to be OK.
      Some time later (can't remember exactly), is when the stalling started. So whether it's directly related to the throttle-body, or I did something when removing/cleaning, or just coincidence, I'll have to inspect.
      Hopefully it is just a coincidence though, as it's a sealed electronic IACV, and I didn't want to mess around with it too much, lol. I considered removing the rivtets holding it to the TB, to get inside and clean, but think that might be going a bit far.

  • My Magna has been doing something similar the last couple of years, happens randomly every few weeks or so, will be driving along and then lose power for maybe 1/4 to 1/2 a sec and very rarely it will cutout altogether requiring me to turn the ignition to fire back up again. And then it works fine again. Mechanics have chucked parts at it to no avail. I might get them to check the crank sensor next time? To me it almost feels like an electrical problem. Otherwise it's all in good nick.

  • Could be dirty air intake or something to do with your air intake, had a similar problem with my Mazda 3 years ago l.

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