TURNS OVER BUT WILL NOT START

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
If you have spark, have you checked to see if there is proper fuel pressure to the engine? Will it start for a few seconds with starting fluid?
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
NO-WHEELS
  • MEMBER
  • 4 POSTS
  • 1996 NISSAN PATHFINDER
  • 190 MILES
My 1996 Nissan Pathfinder wont stay started and stalls out immediately. I have replaced the distributor, which also replaces the Cam Postition Sensor, since it is built in the distributor. I have also replaced the Mass Air Flow Sensor, fuel filter and had a fuel pressure check done. I also had a computer diagnostic test done. It showed some faults. Knock sensor problem bank #1 - also O2 sensor B2S2 problem - also O2 sensor B1S1 heater problem. Will the O2 sensor problems cause it not to start now? It turns over and barely starts or idles for a second or 2 then stalls out. Need HELP. Thanks.
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuel pressure first
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
NO-WHEELS
  • MEMBER
  • 4 POSTS
Thank you, but I did that already. Showed 35 psi. I have no dash lights showing. It all started with it bucking and stuttering one day at certain speed or after car was warmed up and reached it's normal running temp.

After reading blogs, I have replaced the distributor, because I found metal shavings which indicates wear which also replaces the Cam Postition Sensor at the same time, since it is built in the distributor. I have also replaced the Mass Air Flow Sensor, fuel filter and had a fuel pressure check done and read 35 pounds of pressure.

I also had a computer diagnostic test done. It showed some faults. Knock sensor problem bank #1 - also O2 sensor B2S2 problem - also O2 sensor B1S1 heater problem. Not sure where to go from here, since money is tight and I cant afford to do process of elimination anymore.

When I start it, runs extremely rough as if it were out of time. After installing the distributor, it ran perfect until it I ran it to the store and it warmed up. Then started acting up again. So I am stumped and still without wheels.
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
MINIMUM fuelpressure is 43psi you don't have enough
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
NO-WHEELS
  • MEMBER
  • 4 POSTS
Thanks again for responding. So 43psi is minimum? Can it be my fuel regulator relay cutting out sporadically?
And can it cause my pathfinder to run extremely rough with no power at all? I started it yesterday but was really running extremely bad and heard a few popping noises in my filter box. I would hate to buy a new fuel pump and go through the work of replacing it as it is in the gas tank and then find that it wasn't the fuel pump. Thanks for helping me and I would appreciate your advice, since I am on a minimal income and disabled. I am so discouraged right now and feel lost. Chris Btw, nice motorcycle you have in your pic.
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
CRAIGBOS
  • MEMBER
  • 2 POSTS
  • 1998 NISSAN PATHFINDER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 197,000 MILES
Driving my 1998 Nissan Pathfinder on the interstate today and the truck went dead. Like I ran out of gas. I was pretty low but the gas light had not come on yet. Pulled over, put in 1 gallon of gas. Did not start, got towed home, put in 2 more gallons of gas, still will not start.
Have not had any problems like this before. I did wash the truck right before this happened(I don't think I got any water on the engine though)
Thanks.
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check what's missing fuel or spark-do below and let me know

Disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel problem, check the fuel pressure to rule out the fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil, distributor pick-up coil, ignition control module, cam and crank sensors-
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The 1613/14 code is yor air inection pump driver or pump solenoid on the secondary pump this could be very well to having installed the performance chip in yur vehicle. It is the driver and or the solenoid and sthis should be checked by a professional so he can scan it and turn things on and off awhich you are unable to do with your scanner to test the driver as well as solenoids. Have a pro test this but the fault cold lie with your chip you installed.
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
CRAIGBOS
  • MEMBER
  • 2 POSTS
We've got spark from the plugs. Took it to mechanic today, he pushes it in the garage and testes for fuel pressure. It was a little low (32), then he proceeds to crank the truck.
He said it ran for "quite a while". I picked it up and filled up with gas. On the way home. It dies again(after about 10-15 minutes on the road). Now it will not start again.
Could a fuel filter be causing this? The truck has 197, 00 miles and I can't tell you the last time the filter was replaced.
Thanks,
Craig
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Sorry I sent the wrong reply for another vehicle.43 is the bare minimum for pressure you need to check with a gauge I don't think it's the regulator probably the fuel pump. It would cause all the mentioned problems.
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
NO-WHEELS
  • MEMBER
  • 4 POSTS
No problem with the wrong reply, lol. I'm sure your quite busy helping many. Thanks again for your suggestion. What else can I do at this point, lol. Before I do this though, I will check one more time with gauge and see what the pressure is at idle. Should the pressure go higher when revving the rpm's? Thanks for help. Don't mean to ask too many question's. Chris
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
That is the pressure and when the engine is shut off it should hold that pressure for 5 minutes it may go higher when you rev it. But the spec we get is at idle.
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
CMCDES
  • MEMBER
  • 1 POST
I realize this is an old thread but when I had the issue of random stalling on my 1996 Pathfinder, the forums were of little help. Lots of problems and few reported solutions. Random stalling is usually the Mass Airflow Sensor. I tested mine by pressing and wiggling while the car was running. This caused an immediate stall every time. I found one online for $60 and the stalling has been eliminated. The other problem I had was hard starting of the wear your starter out variety. This is a VERY common problem and many have wasted a small fortune with dealers and repair facilities and not fixed the problem. Timing belts stretch over time and in my case the timing was way off. I solved the very hard starting problem in 5 minutes and the solution didn't cost anything. Loosen the distributor hold down bolt and turn your distributor about a 1/4" to 1/2" CLOCKWISE.
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
CDERRICK23
  • MEMBER
  • 3 POSTS
  • 1998 NISSAN PATHFINDER
  • 178,000 MILES
A few day ago in the morning, our 98 Pathfinder would crank, but not start. We changed 5 out the 6 spark plugs and it ran fine that night and the next morning until about 20 min. Into driving. Then, the car began to idle bad and acting like it was going to shut off. I arrived at work and when beginning to leave, it cranked and started but again idled bad while in park and drive and would shut off. Tried to have spark plug replaced, but no mechanic was willing and able at time. Attempted to drive home and it shut completely off coming down the road. No smoke, radio and all electronics would work, but would not restart. We replaced the 6th plug and all the wires and it will crank and not start. We listened for the fuel pump with ignition "ON" and you can hear it and clicking under hood. You smell fuel when trying to crank and spark plugs smell of gas. We ran the scanner tool and no codes are found. We tested the spark plugs and there is no fire to at least two of them. We have came to the conclusion it is either the crankshaft sensor or distributor. But My question is if it is the crankshaft, wouldn't we have received a code or could it be the ECU not giving it a code or the distributor rotor (cap looks brand new). Also, is there any way to test the distributor or crankshaft to narrow it down?
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
When a crankshaft sensor goes bad it will not set a code. Here is a guide to help you see what you are in for when doing the job.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Here is the location of the sensor which is on the top of the transmission bell housing.

Check out the diagrams (Below)

Please let us know what you find. We are interested to see what it is.

Cheers
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
CDERRICK23
  • MEMBER
  • 3 POSTS
Yeah we have tested the spark plugs and there is no spark. We have turned the ignition and the fuel pump cuts on. The fuses are ok. We need to know how to test the coil on the distributor, cap, or crankshaft. We hooked the scanner and no codes are pulling. I will order the crankshaft sensor
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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The Crankshaft Position Sensor (OBD)On transmission housing, facing flywheel gear teeth. You will need to jack the car up

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

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Wednesday, November 14th, 2018 AT 12:19 PM (Merged)
Tiny
CDERRICK23
  • MEMBER
  • 3 POSTS
It took a while but I got the sensor changed out and the engine started right up YA! Thanks for your help this site rocks!
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Wednesday, November 14th, 2018 AT 12:20 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Good to hear, please use 2CarPros anytime we are here to help.

Cheers
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Wednesday, November 14th, 2018 AT 12:20 PM (Merged)

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