New spark plug, started for 5 seconds and died

Changed spark plugs this afternoon 02 Pre runner 3.4. Truck started and ran for 5 seconds then died. Will not restart, it turns over though. It has spark runs while spraying ether. Pulled fuel filter, no fuel pressure. Truck is new to me, not much history from PO. It has a viper security system but no remotes. Does the viper kill fuel relay? Or do i just have bad luck and the fuel pump coincidentally died at the same time. Thanks in advance for the help

 

Are you positive you didn't accidentally unplug something or forget to plug something back in? If all you did was a spark plug swap, it's unlikely that an alarm has anything to do with this issue. I'd retrace my steps and give everything a once over before chasing a goose.

 

That's what I was thinking but all the info I found said it interrupts the starter. I'm not familiar with security systems but will attempt to remove it.

 

Only thing that wad removed was the intake tube and maf was unplugged, I double checked everything I touched

 

That's my guess, I drove it all day before i changed plugs

 

Is you turn the key twice and hit the valet button it should bypass the alarm(like if your fob was to fail), viper alarm immobilizer will stop ignition and the fuel pump I believe

 

I will try that , if not ill rip out the viper and go from there. The less stuff to cause problems the better. Thanks

 

https://youtu.be/j2YpUldZaa4

 

Happened to me because I forgot to put back the ground strap coming off the intake manifold on driver side.

 

I also just changed my plugs and wires. No starting issue, but I will confirm/agree that I had to remove the ground strap on the drivers side to access the middle plug. Not sure how it would crank but no fuel with that disconnected but it my work like that...

I hope OP can report final resolution when figured out.... Just to know.....

 

I tried the alarm bypass on the video, no change. I removed the entire viper alarm system, no change. It was a starter interrupt system, no tie in to fuel system. Going to check ground and wires again. Then fuse and relays

 

long shot here... take a rubber mallet and hit on the fuel tank in tha area of the fuel pump a few times... the pump could be "stuck".

 

Ill definitely try the hammer method lol. Checked ground on intake and relay under hood and swapped relay with known working one next to it, no luck. I am having a hard time finding the relay under the dash. Does anyone have an image of what it looks like or Exact location? I have an other Tacoma i can swap relays with if need be. Also can anyone confirm fuel pump on comes on with starter or engine running

 

the fuel pump will only work when the starter is cranking or the motor is running. I have uploaded the wiring for a 2000 M.Y. Tacoma... it should have not changed much if at all. If there is no signal from the CPS (crank position sensor) the fuel pump wont run either. I am thinking that the pump just went out and it is a coincidence.

In looking at the diagrahm connector BN1 is under the drivers seat... light blue and White/black wire. light blue is +12v DC, White / black is ground. Would be simple enough to see if there is +12 volts to the light blue wire, if there is it is most likley the pump.

 

Thanks glamisman, wiring diagram was a big help. I tried the rubber mallet and it would work for a split second each time I hit it. I'm thinking it's a rubbed wire or loose connection on or near fuel pump. I was going to remove the bed but fuel pump sits under the back seat on double cabs. I'll keep you guys posted on what I find. Is there an easy way to post pics from a phone? I've only done it from a pc

 

Just hit upload media, its next to post reply...

 

I hit upload file, next screen says choose file. I hit that tab nothing happens?????

 

You should be able to hit choose file then it will ask where you want it from. If thats not working they you can always just try starting a album and uploading to that then posting here.

 

I never get the white tabs on the bottom of the screen. I tried albums with same result. I even tried changing to desktop view. It's a galaxy s7 if it matters. I am definitely not great with computer stuff anyway

 

Thats where you failed, you got a android... jk idk that’s weird