Stampede Posted June 1, 2019 Report Share Posted June 1, 2019 Well, I was driving to work the other day, and it just died, would restart then die, now pretty much just turns over, it did stumble some whiling driving before dieing, No codes, which I thought was odd. I replaced the crank sensor with a local parts store sensor, with no change. I'm assuming I should have 12v to the coils with the key on, and that should be the red wire, correct? Not sure what else it could be. I will double check for spark, with a spark tester, I pulled a coil and plug, seemed like some times it had spark, then other time no spark, could be a grounding issue with my method. I do have an other nissan I could steal the cam and crank sensors out of, but I hate to do that, since that one is running good. Could it be the vehicle speed sensor? Thanks. Quote Link to comment Share on other sites More sharing options...
10phone2 Posted June 1, 2019 Report Share Posted June 1, 2019 sorry this is happening. If it was the sensor, would it even start at all. Could it be fuel related? Hopefully other CR folks can help out more. Quote Link to comment Share on other sites More sharing options...
Not Brian Posted June 1, 2019 Report Share Posted June 1, 2019 buy something newer than 2005 Quote Link to comment Share on other sites More sharing options...
POS VETT Posted June 1, 2019 Report Share Posted June 1, 2019 Try fuel pump and its relay and fuse first. Quote Link to comment Share on other sites More sharing options...
TurboRust Posted June 1, 2019 Report Share Posted June 1, 2019 spray starting fluid into the throttle body and see if it starts... cheap way to point you in the right direction of whether its a spark or a fuel issue. if it starts you have a fuel issue, if it doesnt you have a spark or timing(chain, cam or crank sensor) issue Quote Link to comment Share on other sites More sharing options...
Cordell Posted June 1, 2019 Report Share Posted June 1, 2019 spray starting fluid into the throttle body and see if it starts... cheap way to point you in the right direction of whether its a spark or a fuel issue. if it starts you have a fuel issue, if it doesnt you have a spark or timing(chain, cam or crank sensor) issue Best advice. Sounds alot like a fuel pump dying. Quote Link to comment Share on other sites More sharing options...
cdk 4219 Posted June 1, 2019 Report Share Posted June 1, 2019 buy something newer than 2005 This is better advice, but seriously if you are diagnosing this as a faulty speed sensor, then you may want to take it to a professional. It could be absolutely anything, but a fuel pressure is where I would start. Quote Link to comment Share on other sites More sharing options...
Dharris89 Posted June 2, 2019 Report Share Posted June 2, 2019 My neighbor has a similar Altima and there is a sensor under the brake pedal that commonly goes out and makes the car run like crap. We jumped it, replaced a battery and finally figured out it was that stupid sensor. Might be worth a try. Good luck Quote Link to comment Share on other sites More sharing options...
Stampede Posted June 2, 2019 Author Report Share Posted June 2, 2019 Had a guy come over with a scan tool, says the cam is 100deg plus out of time when cranking. Every now and again, it will start, then die. I pulled the cam and crank sensors from my other running altima and still acted the same. I might pull the speed sensor, but at this point I'm not sure. Thanks. Quote Link to comment Share on other sites More sharing options...
aussiek2000 Posted June 2, 2019 Report Share Posted June 2, 2019 Vehicle speed sensor has nothing at all to do with the engine starting. Check fuel pressure. If its good, check compression. If its actually 100* out of mechanical time, there are going to be some bent valves. Quote Link to comment Share on other sites More sharing options...
Stampede Posted June 2, 2019 Author Report Share Posted June 2, 2019 The biggest issue, is it doesn't have spark most of the time, doesn't make since. When it does start, it sounds great. Thanks. Quote Link to comment Share on other sites More sharing options...
STEVE-O Posted June 2, 2019 Report Share Posted June 2, 2019 Something is causing it to not read timing correctly, either a sensor, wiring , trigger on the cam itself etc Quote Link to comment Share on other sites More sharing options...
Stampede Posted June 2, 2019 Author Report Share Posted June 2, 2019 That's what I'm thinking at this point, that motor has alot of miles on it. Maybe the trust washer is gone, causing the reluctant wheel to be out of align. I thought I might pull the valve cover off to take look at the cam. Thanks. Quote Link to comment Share on other sites More sharing options...
Stampede Posted June 3, 2019 Author Report Share Posted June 3, 2019 Can anyone post or send me a pdf of the engine wiring harness? Thanks. Quote Link to comment Share on other sites More sharing options...
99StockGT Posted June 3, 2019 Report Share Posted June 3, 2019 Had something very similar to this happen with my SE-R Sentra, traced it down to a semi loose ground wire passenger side top of the motor. Drove me absolutely nuts until I tracked it down, needed about another full turn to fully tighten then that issue resolved. Now of course the motor blew about 200 miles later... but that's a different story! Quote Link to comment Share on other sites More sharing options...
Stampede Posted June 4, 2019 Author Report Share Posted June 4, 2019 Got it!!! I got to thinking, if the injectors are firing, I can smell gas, then the pcm is being triggered to fire them, then it's a ground issue. By reading 99's reply, I remembered, there are 2 grounding wires on the front timing cover. Go to my 2nd job, where the car is, pop the hood, moving the harness out of the way, grab the wires, bam both are loose as a goose, and corroded! Probably when I put the motor in a couple of years ago, and didn't tighten them down. Opps, MFer! Thanks Again!!! Quote Link to comment Share on other sites More sharing options...
99StockGT Posted June 6, 2019 Report Share Posted June 6, 2019 Muahaha! A win for the good guys! Glad to hear! Quote Link to comment Share on other sites More sharing options...
zeitgeist57 Posted June 6, 2019 Report Share Posted June 6, 2019 It's sad that some of the basic fixes are the ones I'm seeing most often...like I've learned too much complex stuff over the years that I'm overlooking the simple stuff. Mower kept dying on me when it warmed up. Pull starter would make it smell like unburnt fuel. Buy a $3 spark plug and it'd run a little better but still stalled. Pulled coil (with magnet contacting engine fan for timing trigger) and all steel brackets and trigger fields are corroded. 5 minutes with an air dremel and wire brush and the mower's running better than it has in years. Congrats on figuring it out, OP...and the fix being cheap-as-free to get it back running ! Quote Link to comment Share on other sites More sharing options...
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