What is causing engine stall? While driving.

Tiny
LEN RICHAN
  • 1995 PORSCHE 911
  • 12,000 MILES

What is causing engine stall? While driving along, car stalls w/o warning then starts after a few minutes and runs great again, until the next time, Mechanics are baffled !

Do you
have the same problem?
Yes
No
Thursday, April 4th, 2013 AT 2:00 AM

16 Replies

Tiny
RIVERMIKERAT
  • MEMBER

Check fuel pump pressure. This sounds like vapor lock.

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Thursday, April 4th, 2013 AT 2:43 AM
Tiny
CADIEMAN
  • MEMBER

Remove the fuel And try driving the car does he do the same thing?

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Friday, April 5th, 2013 AT 4:56 AM
Tiny
CADIEMAN
  • MEMBER

Remove the fuel cap, does it do the same thing?

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Friday, April 5th, 2013 AT 4:58 AM
Tiny
LEN RICHAN
  • MEMBER

SO FAR YOU'VE PROVIDED ME WITH ABSOLUTELY USELESS INFO UN RELATED TO THE DESCRIBED PROBEM BECAUSE THE CAR RUNS GREAT UNTIL AND AFTER THE STALL OCCURS !

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Friday, April 5th, 2013 AT 6:35 PM
Tiny
LEN RICHAN
  • MEMBER

CAN'T BE VAPOR WITH AN ELECT, FUEL PUMP AND FUEL INJECTION

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Friday, April 5th, 2013 AT 6:38 PM
Tiny
RIVERMIKERAT
  • MEMBER

Actually, yes, it can be vapor lock. Check the fuel pressure. Vapor lock doesn't occur until heat builds up enough to boil the fuel in the fuel lines.

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Saturday, April 6th, 2013 AT 1:46 PM
Tiny
LEN RICHAN
  • MEMBER

OK I'll try it But wouldn't I have the same problem after it restarts. The problem doesn't recur sometimes for 100 miles or so !

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Saturday, April 6th, 2013 AT 5:19 PM
Tiny
RIVERMIKERAT
  • MEMBER

Not necessarily. The pump could have cooled down enough to provide adequate pressure and the engine compartment could have cooled down enough to keep the lines from boiling. Be sure the check the pressure once the vehicle reaches operating temp and right when the problem surfaces.

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Saturday, April 6th, 2013 AT 5:40 PM
Tiny
LEN RICHAN
  • MEMBER

It's fairly impossible to check pressure when I'm stuck on a mountain road or a freeway; plus it starts again and runs normal, some times within a minute or two ! Any suggestions on how to catch the problem as it happens in a mechanic's shop?

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Monday, April 8th, 2013 AT 5:22 AM
Tiny
RIVERMIKERAT
  • MEMBER

Aside from letting them have it for a few days and filling the tank for them, asking them to idle it and drive it while carrying a fuel pressure gauge? Not really.

What I would recommend is carrying both a fuel pressure gauge and a multimeter or test light with you for awhile. When the problem occurs, check the pressure and check for voltage at the pump.

Is this something that happens on cold and hot days, or just hot days, or just cold days?

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Monday, April 8th, 2013 AT 3:58 PM
Tiny
LEN RICHAN
  • MEMBER

ANY IDEAS?

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Monday, April 8th, 2013 AT 6:01 PM
Tiny
RIVERMIKERAT
  • MEMBER

You should be able to borrow a fuel pressure gauge from places like Autozone for a few days. Also, like I said, get a multimeter, or at least a test light to check to see if the fuel pump is receiving power when the problem occurs. It could just be the pump or relay overheating.

Are there any specific times and conditions where it happens more often?

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Tuesday, April 9th, 2013 AT 2:20 AM
Tiny
LEN RICHAN
  • MEMBER

I WANT A REFUND SINCE THE ADVICE WAS NOT POSSIBLE TO USE ! UNLESS YOU HAVE MORE, ACTIONABLE ADVICE?

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Wednesday, April 10th, 2013 AT 12:56 AM
Tiny
RIVERMIKERAT
  • MEMBER

Unless you live somewhere where there are no chain parts stores, you can either rent or borrow a fuel pressure gauge. Even though I strongly feel that this is either a case of vapor lock or overheating fuel pump relay, I will run down the other possibilities for you:
1: Overheating ignition contacts in the ignition switch.
2: Overheating coil getting ready to fail.
3: Overheating relay set in the ignition system.

All of these are easily actionable items. Relays and ignition contacts can be easily tested with a test light or meter. Fuel pump pressure is easy to test if you go rent or borrow one from a parts store such as Autozone or Pep Boys.

Each piece of advice you were given was 100% usable. It's not our fault you don't want to believe it or try it.

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Wednesday, April 10th, 2013 AT 3:40 AM
Tiny
CADIEMAN
  • MEMBER

Just go to the parts store at buy a can of starting fluid. When it quits spray it in the intake if it starts. It is starts you have a bad fuel pump or fuel regulator that will help you from buying a pressure gauge. If it doesn't start then you would need to investigate is there power to the injectors, let's start here

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Wednesday, April 10th, 2013 AT 7:00 AM
Tiny
LEN RICHAN
  • MEMBER

I'm getting email responses to my last ques w/o any new info. Whats up?

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Wednesday, April 10th, 2013 AT 6:22 PM

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