99 Z28, Very odd... will not crank after sitting, then will crank after several tries
09-05-2012, 08:12 PM
#1
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99 Z28, Very odd... will not crank after sitting, then will crank after several tries Ok so this has been very wierd and I really can not figure it out. I have replaced the starter, battery, and alternator all in 2 weeks so far. The car has been doing great with firing up every time with no issues. Today has been a different story. I went to work and the car sat for 8 hours, went outside, turned the key, fuel pump primed, had the car in gear with the e-break, turned the key...nothing...all the lights were on the dash like they normally are when it starts regular...tried it 3 more times, still nothing....foot on break took it out of gear, tried 2 more times... nothing.... then the 3rd time wham, the damn thing fires up like nothing ever happened. Then again this happened after the car sat for about 2 hours or so.
Any freakin clue???????
Any freakin clue???????
09-05-2012, 08:34 PM
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Sounds like a fuel pump? Not sure what pressure is supposed to be but i would check fuel pressure. It may have just been a fluke tho, how many times has it done this?
09-05-2012, 08:37 PM
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two times today... brought it home after the second time, turned it off for 30 seconds, fired right back up
09-06-2012, 01:30 AM
#5
From what I have read its an issue with the fuel pressure regulator. I have trying to get at it but I don't have time to fully drop the tank and I am not going to cut an access hole through the floorboard to get the pump out. Im in the habit of turning the ignition on and letting it prime and build pressure for a few seconds. Sometimes it will start right up but sometimes it needs a few seconds or a few cranks. It's livable for now.
09-06-2012, 07:32 AM
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When the car fails to start, if the starter motor turning on?
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.
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09-06-2012, 07:46 AM
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When the car fails to start, if the starter motor turning on?
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.
i could only be so lucky if it was as simple as a relay... my luck just does not go that way it seems
09-06-2012, 07:52 AM
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When the car fails to start, if the starter motor turning on?
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.
09-06-2012, 10:15 PM
#11
You may have a typical "Crankshaft Position" sensor issue. Your symptoms are 100% picture perfect for that.
CP sensors will slowly fail and you WILL NOT get a SES code/light till its totally dead....which is one of our cars Idiot Lights.
If you want to....go buy a new sensor. Put the front end up on ramps, drop the starter and there it is. Takes 5 minutes to change. See if it fixes the issue. If it doesn't...clean it real good and return it for a refund.
.
CP sensors will slowly fail and you WILL NOT get a SES code/light till its totally dead....which is one of our cars Idiot Lights.
If you want to....go buy a new sensor. Put the front end up on ramps, drop the starter and there it is. Takes 5 minutes to change. See if it fixes the issue. If it doesn't...clean it real good and return it for a refund.
.
Last edited by LS6427; 09-07-2012 at 01:45 AM.
09-07-2012, 12:22 AM
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I am thinking that we could have very similar or the same issues with our cars. I have an 02 SS. Randomly won't start and end up having to roll start to get it running. After the roll start, I can turn the car off then back on and it will usually start.
edit: just noticed the post above. I will give that sensor a try. Definitely worth giving it a go.
edit: just noticed the post above. I will give that sensor a try. Definitely worth giving it a go.
Last edited by areax; 09-07-2012 at 12:27 AM.
09-09-2012, 11:37 AM
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If it does everything but crank, my vote is for the VATS system. the 2 tiny wires that come off the ignition key cylinder for the VATS system come apart. When you wiggle or mess with the key cylinder sometimes its enough to make contact and start the car. You will have to disassemble the upper steering column to see if the wires are cut, but you will need a some special tools to do it. Snap ring pliers, lock plate depressor, steering wheel puller and a few regular screw drivers etc. You might be able to fix the wires but you will probably need a new cylinder. Just my .02
09-09-2012, 03:57 PM
#18
When the car fails to start, if the starter motor turning on?
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.
09-20-2012, 02:42 AM
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I have something similar to this on my 02 Z28:
Leave car overnight - car fires first time
Drive car and then switch off, try to start after 30secs - car fires first time
Leave the car for 10 min or even a few hours - car cranks but will not start, turn ignition off and after a few second try to start and the car fires first time
Have changed the regulator on the fuel rail and no change.
Changed the starter motor and no change
Have tried swapping the ignition relay and no change
Changed the battery and no change
At a loss now but guess i am left with the fuel pump or possibly VATS? Any advice welcomed!
Leave car overnight - car fires first time
Drive car and then switch off, try to start after 30secs - car fires first time
Leave the car for 10 min or even a few hours - car cranks but will not start, turn ignition off and after a few second try to start and the car fires first time
Have changed the regulator on the fuel rail and no change.
Changed the starter motor and no change
Have tried swapping the ignition relay and no change
Changed the battery and no change
At a loss now but guess i am left with the fuel pump or possibly VATS? Any advice welcomed!
09-20-2012, 06:07 AM
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When the car fails to start, if the starter motor turning on?
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.
If not, try swapping out the starter relay in the underhood fusebox. you can swap it with the relay next to it (forget what it is for). I have had this relay get lazy on me before and not wanting to energize the starter.
The symptoms kind of mirror those of a vats problem.