Engine just dies, no DTCs no surging.
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azmedic85308
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Engine just dies, no DTCs no surging.
For the last month or so I have been having problems with hard starts on my car and now the last week or so the car just randomly dies. Not like a surging,stalling,or jerking condition. The engine just turns off and I have to restart it again. I have no DTC codes being thrown and everything appears to be intact. Any ideas?
Last edited by azmedic85308 on Thu Jun 11, 2009 4:33 pm, edited 1 time in total.
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Archon
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Re: Engine just dies, no DTCs no surging.
By hard starting, do you mean that the starter cranks the engine, but it takes a long time to start, or doesn't the starter activate?
If it cranks, but won't start, check the fuel pressure regulator on the fuel rail. Pull the vacuum line off from it, and check for fuel, or the smell of fuel. If you find any, replace the fuel pressure regulator, but don't drive the car. An errant spark can destroy the upper intake manifold and start a fire. If that's fine, check the fuel pressure. Then, we can move on from there, if no problems are found.
If it cranks, but won't start, check the fuel pressure regulator on the fuel rail. Pull the vacuum line off from it, and check for fuel, or the smell of fuel. If you find any, replace the fuel pressure regulator, but don't drive the car. An errant spark can destroy the upper intake manifold and start a fire. If that's fine, check the fuel pressure. Then, we can move on from there, if no problems are found.
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azmedic85308
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Re: Engine just dies, no DTCs no surging.
Well considering I just pulled the vacuum line off the FPR and fuel dripped onto my hand...im assuming that may be the source of my problem????
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00Beast
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Re: Engine just dies, no DTCs no surging.
Yes, it's definitely a start.
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CMNTMXR57
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Re: Engine just dies, no DTCs no surging.
Well, since you disconnected it at the FPR and got a fuel shower, that tells me it's most likely not the pump. :D
Sounds like the FPR.
Sounds like the FPR.
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Re: Engine just dies, no DTCs no surging.
Definitely. Replace the FPR, and see where that leads.
Bye Bye:
RIP sandrock
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Sirius wrote:Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.
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azmedic85308
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Re: Engine just dies, no DTCs no surging.
Just swapped out FPR's ($81 bucks at Napa, Delphi brand) took a whole 5 min. I have drove the car approximately 30 min since changing and turned the car on and off 4 times, unable to duplicate the hard start or stalling. It did crank a bit hard the first couple times, but it has not stalled since. Problem fixed? Discuss.
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CMNTMXR57
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Re: Engine just dies, no DTCs no surging.
Sounds good. It took a little cranking to re-start as the fuel system had to fully re-pressurize itself from having been opened (At the regulator). Normally when you start it, it just needs to pressurize the rail and injectors.
Retired Bonneville Owner and former GM Tech:
2004 Pontiac Bonneville GXP: Black/Ebony *SOLD*
Summer Toys: Combined 827 RWHP / 877lb/ft RWTQ
2004 Pontiac GTO: Impulse Blue Metallic/Black/M6: lots 'o mods, 415 RWHP / 405lb/ft RWTQ!
2006 Cadillac STS-V: Light Platinum Metallic/Light Gray/A6 - Spectre CAI, Magnaflow exhaust, Speed Inc. tune, 412 RWHP / 472lb/ft RWTQ
Daily Drivers:
2019 Chrysler Pacifica Limited: Mommy's new RGC
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00Beast
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Re: Engine just dies, no DTCs no surging.
Yes, it definitely sounds like it was your problem. Keep an eye on it, and if the problem comes back, let us know, and we'll do our best to diagnose it.
Bye Bye:
RIP sandrock
RIP sandrock
Sirius wrote:Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.