# 2003 Nissan Pathfinder - Won't start **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** nissan\ **Created:** [September 12, 2023, 3:58pm UTC](https://community.cartalk.com/t/2003-nissan-pathfinder-wont-start/192849 "2023-09-12T15:58:53Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Rafael51](https://avatars.discourse-cdn.com/v4/letter/r/59ef9b/32.png) [@Rafael51](https://community.cartalk.com/u/Rafael51)\ **Post date:** [September 12, 2023, 3:58pm UTC](https://community.cartalk.com/t/2003-nissan-pathfinder-wont-start/192849/1 "2023-09-12T15:58:53Z")
pathfinder 3.5 v6 crank but do no start ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [September 12, 2023, 4:45pm UTC](https://community.cartalk.com/t/2003-nissan-pathfinder-wont-start/192849/2 "2023-09-12T16:45:30Z")
> [@Rafael51](#): > > pathfinder 3.5 v6 crank but do no start I am guessing you are asking for help?? no punctuation Slow cranking, or normal cranking, very fast cranking?? Any codes before this happened, any pending codes now?? Nissans are very bad for the crank and cam sensors going bad, crank sensor may or may not produce a CEL… ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [September 12, 2023, 8:57pm UTC](https://community.cartalk.com/t/2003-nissan-pathfinder-wont-start/192849/3 "2023-09-12T20:57:16Z")
Ask your shop to check for spark. If spark is good, make sure fuel injectors are being pulsed. Spark ok and injectors pulsing? Fuel pressure test. (Make sure you aren’t out of gasoline first of course, don’t trust the fuel gauge.) ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [September 13, 2023, 3:14pm UTC](https://community.cartalk.com/t/2003-nissan-pathfinder-wont-start/192849/4 "2023-09-13T15:14:06Z")
Squirt some starting fluid into the throttle body while cranking. If it starts and runs as long as you are spraying, you have a fuel problem. Bad pump relay, fuel pump, or wiring. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [September 13, 2023, 3:23pm UTC](https://community.cartalk.com/t/2003-nissan-pathfinder-wont-start/192849/5 "2023-09-13T15:23:40Z")
A bad crankshaft position sensor will prevent an engine from starting. > **[Bad Crankshaft Position Sensor Symptoms & Problems](https://www.1aauto.com/content/articles/bad-or-failing-crankshaft-position-sensor-symptoms)** > > Problems with the crankshaft sensor will often present as problems with engine timing. If you think your sensor has failed, here are some common symptoms of a bad crankshaft sensor that can help you in determining whether or not it has failed. Tester ---
**Author:** ![bcohen2010](https://avatars.discourse-cdn.com/v4/letter/b/779978/32.png) [@bcohen2010](https://community.cartalk.com/u/bcohen2010)\ **Post date:** [September 13, 2023, 3:24pm UTC](https://community.cartalk.com/t/2003-nissan-pathfinder-wont-start/192849/6 "2023-09-13T15:24:31Z")
This engine has three timing chains, each with their own tensioner. And these are hydraulic tensioners, which use the oil pressure to keep the timing chains taut. Hopefully, the engine hasn’t jumped timing due to a failed tensioner/worn guides. Does it sound normal when trying to start?