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sprinkles08
sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 21599
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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Saturn Astra XR: 2008 5 speed saturn astra wont always start.

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2008 5 speed saturn astra won't always start. It cranks fine, but the battery wears down after so many times. We put in a new air filter & fuel injection cleaner, & it seemed to work for awhile. Then it did it again. I called AAA for a tow, but the driver jumped it & it ran. We took it to Pep Boys. They could not find anything wrong, for $100 "worth" of diagnostic skills. I suggested they replace the plugs, as it has 44k miles, & 35k is the recommended time to change. They said that was a maintainence issue & declined to change them. A few days later it acted up again, not starting, so I am looking for suggestions. It appears to start fine when cold. Since my son drives it mostly, I have not experienced it. My wife took it on a trip to AZ & back from Denver, recently, & she had no problems. I am not ready to take it to a dealer (Chevrolet now), as I'm sure they will want to do all kinds of $$$ maintainence. Any ideas ?

Hello and welcome to JustAnswer!

 

I'm assuming no codes are setting, which will definitely make it harder to diagnose. It may require someone diagnosing it at the time it's acting up.

 

If it only happens on a hot restart then it may be fuel related, and that's nor something that would normally set a code. When you shut the engine off after driving the high underhood heat can cause the fuel in the rail to boil and pressure to elevate. Fuel can then push past the check valve in the fuel pump and push fuel out of the line and rails. This leaves mostly vapor and little fuel in the line so it causes a very hard start. Replacing the pump would be necessary to repair this.

 

It may also be an ignition issue, but ignition would normally set a code. It's not unheard of though for a cam or crank sensor to internally short and take down both sensors, which will prevent it from setting a code.

 

If the problem only seems to happen on a hot restart that's significant and something you'll want to mention to a shop so they can try to duplicate it under the conditions where it happens.

sprinkles08 and 3 other Car Specialists are ready to help you
Customer: replied 3 years ago.


Sounds logical. Yes, no codes were displayed. Pep Boys said they did a fuel pressure test, & it checked out. We'll take it to someone else that is more familiar with Saturns.


Thanks,


Art

You're welcome and good luck with your car!

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