Engine will stall when driving?

Tiny
MMPRINCE4000
  • EXPERT
Check fuel pressure with mechanical gauge hooked up to test port on fuel rail, should be 40-50psi.

Check spark with calibrated spark tester, look for blue snapping spark.

If the above checks out then this may be transmission related, shift solenoid, TCC clutch for example.
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:44 AM (Merged)
Tiny
REDEEMED03
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • V8
  • FWD
  • AUTOMATIC
  • 151,000 MILES
My car stalled out on me while I was driving on the freeway. When my speed reached the 60- 65 mph mark, the rpm's dropped and the car shut down. After letting the car sit 2-3 mins. I can start it up again and drive off but the same thing repeats itself. I just got a new fuel pump put on this summer so I don't know what it could be. So, I took it to the repair shop and the guy told me that he couldn't find anything wrong with it. He said he drove it around the corner off and on for about 3 hrs. And he checked the censors and even the fuel pump I just put on there and couldn't find anything wrong. I went and picked it up, drove it on the freeway again and got around 65mph and the samething happened again. I'm just lost right now and I need some help on finding out what it could be.
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:45 AM (Merged)
Tiny
WRENCHTECH
  • EXPERT
All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.

Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:45 AM (Merged)
Tiny
TAKECHARGESARGE
  • EXPERT
Hi redeemed03,

This is the kind of problem that has given the Impala a bad reputation. When you take the car to a mechanic and he can't find anything wrong, it can be very frustrating. It's almost impossible to do the tests for the diagnosis when in only 5 to 20 minutes the car can be started.

I had a similar problem with my 2000 Impala. It was shutting down while I was driving on the freeway.

I found a mechanic who would stick with the job until he found the problem. It took almost a week and a declaration by the mechanic that the car was possessed, but he finally found the cause of the problem. It was the Crankshaft Position Sensor.

There must be a heatsoak problem that affects the ability of the sensor to relay data to the computer.

Anyway, I believe if you change the Crankshaft Position Sensor the problem will go away.

TakeChargeSarge
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:45 AM (Merged)
Tiny
WRENCHTECH
  • EXPERT
Just because the Crank sensor was the cause of a problem in one care DOES NOT mean it will be in your car and simply throwing parts at it will get very expensive and it the car is not tested during the failure, that's exactly what you are doing.
Was this
answer
helpful?
Yes
No
-1
Wednesday, January 20th, 2021 AT 10:45 AM (Merged)
Tiny
LARR283
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 92,500 MILES
2001 Impala with 92,500 miles has two problems:

1. Hard-start about an hour after car was running. Starter cranks fine, but engine does not catch. Starts OK if restarted less than an hour after shutting off, or, if more than two hours after shutting off. Can get it started by turning key to On without cranking, then off again about 15 times.

2. Sudden stalling. Occurs randomly, but most often after driving for about 10 minutes. Car is hard to start after stalling (starter cranks but engien does not catch). Can get it started by turning key to On without cranking, then off again about 15 times, or, waiting about 5 minutes.

I checked the fuel pressure; it is exactly to spec when the problems are not occurring. I have been unable to check the pressure when the problems are occurring; I tried once when it would not start, but attaching the pressure guage cleared the problem and the pressure was fine.
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:45 AM (Merged)
Tiny
TAKECHARGESARGE
  • EXPERT
Hi larr283,

I had a similar problem with my 2000 Chevy Impala.

The engine would shut off at the most inopportune times (on the freeway at 65 mph, pulling away from a stop sign, in the parking lot at Home Depot, etc.).
Also, it usually happened about 20 minutes after the first start-up of the day.
Always, after a few minutes wait, it could be restarted and driven with no problems. The only indication on the instruments was the red battery indication that you normally get when you start the car. There was no check engine light or trouble codes.

After living with the problem for 6 months because the mechanics at the dealer could not find anything wrong with it, I found a mechanic who would do some actual troubleshooting.

The problem was the Crankshaft Position Sensor. It was interupting the power to the ignition module and causing the engine to shut down.

After it was replaced, all the problems went away. That was in October 2005 and there's no problem with the engine to this date.

TakeChargeSarge
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:45 AM (Merged)
Tiny
CARP1108
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 97,000 MILES
Car shuts off sometimes when you lift off the gas, put in neutral and starts right up. Then itis good for rest of day. Mass air flow sensor and ignition module already changed.
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
HAs the check engine light come on?
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
CARP1108
  • MEMBER
No check engine light
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Without a check engine light and the fact it starts right back up makes it a guessing game. My first thought would be the crank sensor, but I can't be sure. I was also wondering about the fuel pump pressure, but again, the quick restart makes me question that.

Have you had either of them checked?
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
CARP1108
  • MEMBER
That will be next. Thanks
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Let me know what you find. Remember, when checking fuel pump pressure, it will be tough if it is running correctly.
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
CASSIE2007
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 155,000 MILES
My car cut off on me while I was driving what is it
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
TAKECHARGESARGE
  • EXPERT
Hello cassie2007,

I had a similar problem with my 2000 Chevy Impala.

If your engine stopped running while driving and the check engine light didn't come on and you were able to start it again within a few minutes and drive, then you should have someone check out the crankshaft position sensor. If it is going bad, the amount of current it passes will vary outside the limits and the engine computer will shut off power to the ignition module.

Almost any mechanic you take this problem to will tell you that they can't find anything wrong with it unless it happens while they are working on it, so you'll have to tell them what you want them to check.

Good luck,

TakeSargeSarge
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
ANNETTE73
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 57,000 MILES
Hi,
the car will start, is then driven about 5 to 10 minutes and then dies. If wait about 15 minutes it will start again and can be driven. A mechanic recently decided to replace the battery, but the problem still persists. Please help with what is wrong and should be done. Always had heavy stop and go driving.
Stalled and confused
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Check fuel pump pressure and spark when the engine is not running. My guess is either a bad fuel pump or and ignition module.
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
TAKECHARGESARGE
  • EXPERT
Had this same problem with my 2000 Impala. It drove me nuts, but it always seemed to start again.
The problem was the Crankshaft Position Sensor. It's been 3 years since and no problems.
TakeChargeSarge
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
What he said could be correct. It is part of the ignition system and can shut down spark to the engine.
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)
Tiny
DBERRY
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • V8
  • FWD
  • AUTOMATIC
  • 103,000 MILES
My 2001 impala will turn on, run and then when it gets warmed up, it will sputter and die. My mechanic has tried several things--plugs, oil, sensors. Now after all this, he thinks it is in the wiring. Any suggestions? There was a sensor in the engine that went band and some coolant leaked into my oil and made the car die, and a small explosion. Thats when he changed the plugs and flushed the engine, and replaces several sensors. I am loosing patience and I am wondering if it worth it to keep tryign to track down the problem?
Was this
answer
helpful?
Yes
No
Wednesday, January 20th, 2021 AT 10:46 AM (Merged)

Please login or register to post a reply.

Sponsored links