01Z doesnt start up on first try
Thread Starter
12 Second Club
Joined: Dec 2004
Posts: 175
Likes: 0
From: Harrisburg PA
01Z doesnt start up on first try Just a few months ago the car started to not turn on on the first try. I can turn it over for 10 secs and it will do nothin, then try a 2nd time and it starts instantly. It seemed to have started while i was at the track and the first thing that happend is the low oil light came on and once i started the car back up it never came back.
Once the car has been running for a while, i can turn it off and start it up first try for about 15 mins then it goes back to taking 2 tries.
Once the car has been running for a while, i can turn it off and start it up first try for about 15 mins then it goes back to taking 2 tries.
Last edited by loreak; Aug 24, 2007 at 03:34 PM.
TECH Resident
Joined: Oct 2005
Posts: 781
Likes: 0
From: Taxme, Ohio
I wouldn't worry too much about the light unless it repeats.
It sounds like you have no fuel at the rails when you first crank it up. Maybe something is allowing the fuel to bleed back when the car sits. Is the fuel pump stock?
It sounds like you have no fuel at the rails when you first crank it up. Maybe something is allowing the fuel to bleed back when the car sits. Is the fuel pump stock?
mines doing that also im pretty sure its the resistor in the key going bad I am going to try and take the vats out with my hptuners and see if that fixes it if it does ill put the vats back in and get a new key
Originally Posted by Atver300
mines doing that also im pretty sure its the resistor in the key going bad I am going to try and take the vats out with my hptuners and see if that fixes it if it does ill put the vats back in and get a new key
To the thread starter:
Now my brother had what sounds like the same problem after he swapped out his fuel pump.He would have to "double start" (as he called it) his car because the 1st time it wouldn't "ignite" if you will and then on the 2nd try it would fire right up like no problem.
He decided to pull the pump out to double check everything and it turned out that there was a problem of some sort on one of the pump lines.
Not saying this is exactly your problem but,it definately shows that at least in y brother's situation it was fuel related.The pump wasn't getting enough of a prime I guess you could say.
Hope this helps you figure things out.
Thread Starter
12 Second Club
Joined: Dec 2004
Posts: 175
Likes: 0
From: Harrisburg PA
ive never changed the fuel filter but i was planning on shortly, the pump is stock.
my first thought was fuel as well, but you would think if it was a lack of fuel pressure and took time to build up it would start after a long crank and not matter that you are attempting a 2nd time
i can crank it for like 1 second then do the 2nd try and it works
ae13291 - i did check the oil, it was a little low but nothing worth worrying about, i changed the oil a few weeks later
my first thought was fuel as well, but you would think if it was a lack of fuel pressure and took time to build up it would start after a long crank and not matter that you are attempting a 2nd time
i can crank it for like 1 second then do the 2nd try and it works
ae13291 - i did check the oil, it was a little low but nothing worth worrying about, i changed the oil a few weeks later
Trending Topics
TECH Resident
Joined: Oct 2005
Posts: 781
Likes: 0
From: Taxme, Ohio
Originally Posted by loreak
my first thought was fuel as well, but you would think if it was a lack of fuel pressure and took time to build up it would start after a long crank and not matter that you are attempting a 2nd time
I'm a repeater so what I have just told you is what I have been told....
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo TECH Resident
Joined: Oct 2005
Posts: 781
Likes: 0
From: Taxme, Ohio
The fuel pump does not work after the prime until the engine starts as a safety feature. It is your car's brain realizing that since the car hasn't started with what it had from the initial prime that pumping more fuel without the engine running could be filling cylinders, intake and exhaust with raw fuel. The possibility could be pumping gas out a broken fuel line into the engine compartment or out on the ground. It's fire prevention.