2003 Infiniti qx4 no crank

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calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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My 2003 infiniti qx4 has a very long story, we bought the car used in 2016, it had around 160,000 miles on it maybe. My son drove it to school everyday and loved it. One day he decided to go mud bogging and blew the 4wd, after that it was still fine. Skip some time ahead into early 2017 my daughter needed a car to start driving, and we bought a 97 pathfinder from some friends, she still had her permit. Every now and then my son would drive it to school and eventually it got to the point where e loved that pathy. Skip some more time(2017still?), and he came back to the qx4 he started it and it ran fine, but one day he said he idled funny, like it was reviving while idleling. We waited to fix it because of the short time on our hands to fix it. One day after taking a break from the qx4 he came back to it, he was driving down the highway and he said it just stopped running, he didnt know what happend but he smelt something burnt. We took it to infinity and they said the wiring harness needed to be replaced, for 4500$.( keep in mind it would still crank).We told we paid about that much for the car, and walked off, we believed we knew the problem, i looked into the ecm to see a burnt mark on it and a blown fuse. We sent that to an infiniti place to replace that and the did, next we replaced the throttle body which was the culprit for he strange idling before($500). Later we checked to see if it was getting gas and it was We tried to start but now no crank. We gave up. Come summer 2019, it is still sitting there, my younger son went out to work on it, cause he loves it, he charges the battery ( this battery was bought during the time we tried to fix it a while ago)... a few hours later and its done he goes ounto crank it and... it cranks!!!!!, but it wont start😞 we put the “code reader”( cant remember name of the top of my head) and it says that nothing is wrong, no codes. Next day later he checks it and it gives him a code for crankshaft postion sensor. The problem was i had plenty if other things around the house that i needed to do and that car wasnt my top priority. We stopped working on it.

Now January 2020 my son came back to it, charged it and now it wont start, dont want to spend any more money on this thing!! Every time i try to start it i hear a click, ive tried almost everything, my only culprit now is the neutral/park relay. It is also now giving me the p0335 code too( circuit a). Answers⬇️


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AZhitman
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Welcome aboard!

Check battery voltage - should still turn over with sufficient battery. Try jump-starting it off a running car.

Also, check the brake switch (Nissans have a bad habit of having the little plastic plug on the brake pedal arm POP out, leaving a nice hole for the brake switch plunger to poke through - and not actuate).

If it sat for a year, the fuel could be gummy - drain the tank, add fresh fuel, try again.

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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The battery us at 12.6 volts, which I believe is fine, and i have tried jump starting it, i will check the brake switch, the fuel right now is not my top concern though, will update when i check the brake switch

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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The brake switch is fine

AlanAZ
Posts: 221
Joined: Mon Jan 18, 2016 3:43 pm
Car: 2003 QX4 rwd
Location: Scottsdale, AZ

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Did you try starting in neutral? And with the gear shift being pushed forward when in Park? When my starter was failing, it could go 10 - 20 turns of the key with a click but no crank. You could try giving the starter a good wack with a hammer, that's often good for several starts if the starter is failing.

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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I have tried starting it in neutral and i have tried wacking it with a hammer. None of that worked

Explain “with the gear shift being pushed forward when in park”

AlanAZ
Posts: 221
Joined: Mon Jan 18, 2016 3:43 pm
Car: 2003 QX4 rwd
Location: Scottsdale, AZ

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Push the shift lever forward while turning the key to ensure the Park/Neutral switch is engaged (if the adjustment is a bit off.)

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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I Just tried that and it still didnt want to crank.

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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But my suspicions arent really on the starter because i have replaced that before.

born2lse
Posts: 42
Joined: Mon Apr 15, 2019 8:36 pm

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Check the eccs1&2 fuses in the passenger side engine compartment.

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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Eccs2 is broke the other is fine, what does eccs2 do?

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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Ive read you need to replace the iacv and the ecm, i have had both of those replaced before, but the ecm was sent to infiniti to be repaired not to be completely switched out, as it had a blown fuse in it.

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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Put a new 10a eccs2 in, still no crank.

born2lse
Posts: 42
Joined: Mon Apr 15, 2019 8:36 pm

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Changes are you blew it again.

The iacv fails because the gasket for the coolant to the throttle body fails and leaks coolant onto the iacv. If you didn't replace the gasket, then you probably blew it all again and will have to redo the fix.

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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We bought a new throttle body, when we fixed it a while back, would that have fixed the gasket?

born2lse
Posts: 42
Joined: Mon Apr 15, 2019 8:36 pm

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Did it come with the abv0043 Hitachi component attached?

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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No, i believe it came completely oem

jaworski88
Posts: 25
Joined: Mon Feb 26, 2018 10:08 pm
Car: 2002 Infiniti QX4
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I know you've said that you've replaced the starter before, but how long ago? It is possible that your starter just didn't last that long, especially if your replacement is a reman aftermarket one. My QX4 was doing the same as yours, it would click, but then no cranking of engine. It would start after turning the key off then back to start, but after awhile it was getting worse until it just wouldn't crank no matter how many times I turned key to off/start position. My starter was slowly dying until it just finally died. I suspect it's your starter. You can take your starter to an O'Reilly or Autozone and they can test it for you.

calr
Posts: 16
Joined: Wed Jan 15, 2020 2:39 pm
Car: 2003 Infiniti QX4

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Ok, i think that may be the problem too now, my son said that it tied to start slower and slower when he last worked on it(last year(august?2019))


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