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When warmed up while driving it stalls for a second then takes off again

Tiny
BBYGRL75
  • MEMBER
  • 1 POST
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 106,000 MILES
I'm having an issue with my car and a few people have told me that it's the fuel pump. It acts like it's running out of gas and when I stop at red lights and such it acts like it wants to stall, sometimes it does. When I step on the gas from a stop, sometimes it acts like it's not getting any gas so I have to feather the gas pedal to get it to go. Now it will only start for a few seconds and cut out. I've also read that it could be the fuse or a relay? Please help!
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome to the forum, how long since a tune-up? Use a gage and check fuel pressure. Some of the national brand autostores used to loan out a fuel pressure gage. You can call and ask. You may need to clean the throttle-body and check throttle-body sensors, tps and iac.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
MRGREEN33
  • MEMBER
  • 5 POSTS
  • 1999 PONTIAC GRAND PRIX
  • V8
  • AUTOMATIC
I have a 99 poniac grand prix 3.8 engine and it just shuts off on me when I drive it I let it sit for 30 minutes and it starts rite back up I changed the battery tested the altinator and it still just shut off when I drive what could be the problem?
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Do you have any codes in the computer?If you haven't checked yet that is the first thing I would do most auto parts stores will check for free if you don't live in california. Next time it dies and won't start check for spark let me know if you have any. They sell spark testers pretty cheap at the auto parts store.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
MRGREEN33
  • MEMBER
  • 5 POSTS
Yes I did the code read that it was a crank shaft position censor but Icalled a part store and they said it also could be the control module I'm lost cuz I dnt wanna get the parts and it repeats the problem over.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I need the exact code number not the code description and I will help you figure it out.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
MRGREEN33
  • MEMBER
  • 5 POSTS
When I hooked the scanner up to the car it says no DTC, s or freeze frame data presently stored in the vehicles computer
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So you don't remember the code you had before?If your getting a crankshaft position sensor code then I would suspect you could have a bad sensor. DO you have a multimeter to do some testing?
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
MRGREEN33
  • MEMBER
  • 5 POSTS
No I dnt do you think that it could be the system module or the egnition coil that makes the car just shut off like that?
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
OURWORLDENTER
  • MEMBER
  • 11 POSTS
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 170,000 MILES
I have a grand prix and when I put it in park,

it IDLES up and down until the engine cuts off.

It starts back up but it does that all the time now.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
HAs the check engine light come on? Chances are it is the idle air control valve. The throttle position sensor, or a vacuum leak. However, I can't be sure without a code from the computer. Have you checked for vacuum leaks?
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Most likely I think its the sensor if you can get a meter we can do some testing instead of expensive guessing. Meters are cheap.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
OURWORLDENTER
  • MEMBER
  • 11 POSTS
Code P0135 comes on.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
MRGREEN33
  • MEMBER
  • 5 POSTS
What kind of meter?
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
PO135 = Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

It sounds like an O2 sensor (heated). Here are some pictures of where bank 1 for the optional engines.


https://www.2carpros.com/forum/automotive_pictures/249084_38_1.jpg



The 3.1L V6 is different:


https://www.2carpros.com/forum/automotive_pictures/249084_31l_1.jpg




https://www.2carpros.com/forum/automotive_pictures/249084_31_1.jpg



Remember, bank 1 is the side of the engine with the number 1 cylender. Also, sensor 1 is before the converter.
Let me know if this helps.

Joe
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
A multimeter that reads voltage ohms etc.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
KSNIDER27
  • MEMBER
  • 1 POST
  • 1999 PONTIAC GRAND PRIX
Engine Mechanical problem
1999 Pontiac Grand Prix 78,000 miles

My car stalled and died when driving down the road. When try to restart it will start idle rough for couple seconds and die again can hear the fuel pump running when turn the key to the on position and put new fuel filter on the car as well. Car still will not stay started is it the Fuel pump
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Have the fuel pressure tested with a mechanical gauge, if above 40psi, then the FP is not the problem.
It could be a bad coil pack or ignition module.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
RANDYO
  • MEMBER
  • 2 POSTS
I, too, had a problem similar to yours. I tested my fuel pressures, tried to retrieve any codes, etc, changed fuel filter, disconnected battery for a while. Everything seemed normal. I had a friend who had a fuel injector test kit. I unplugged one of the wire connectors on the injector and plugged the test light in. When my wife cranked the car over it started. We shut it off, hooked up the connector to the injector again, started it up and it's been running great for the last 80k miles. Go figure.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)
Tiny
MJR672
  • MEMBER
  • 3 POSTS
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 12,000 MILES
99 grand prix makes clanking noise when turning right
only. Stops if you shut off engine wile turning.
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Friday, April 19th, 2019 AT 11:05 AM (Merged)

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