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Car will stall out at times?

Tiny
EEDIAZ83
  • MEMBER
  • 1993 OLDSMOBILE CIERA
  • 78,000 MILES
3300 V6 3 speed. Sometimes has trouble starting. Sometimes engine will not shut off. With key off all electrical shuts off but engine will continue running indefinitely. Noticed with key off and engine still running, the speedo will act like a tachometer, Pressing the throttle will make the speedo climb with vehicle stationary. Replaced throttle, MAF, computer, IAT. Check engine light comes on every once in a while. Code is for charging system too high. Already replaced the alternator several times. Have to pull the injector fuse to kill engine. When engine running problem is not occurring the vehicle has trouble starting without holding the gas pedal and letting the car warm up. Will also die during turns. Please help
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Sunday, March 11th, 2012 AT 8:06 PM

8 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Have you tried a new ignition switch? or tested it? Try going over this guide as well

https://www.2carpros.com/articles/engine-stalls

Please run down this guide and report back.
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Sunday, March 11th, 2012 AT 8:10 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The idle speed could be too high, throttle plate might not be fully closing causing it to diesel/run-on and test throttle position sensor
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Sunday, March 11th, 2012 AT 8:10 PM
Tiny
BUBBA3211
  • MEMBER
  • 2 POSTS
  • 1993 OLDSMOBILE CIERA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 124,000 MILES
We have replaced the fuel pump, fuel filter, coil packs, plugs and wires. The car runs fine when in park, but once it gets put into gear, it misses and wants to die. We cannot figure out the problem, please help.
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Saturday, September 26th, 2020 AT 10:27 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Has the check engine light come on?
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Saturday, September 26th, 2020 AT 10:27 AM (Merged)
Tiny
BUBBA3211
  • MEMBER
  • 2 POSTS
Took car to Certified GM Dealer, hooked it up to computer and up came engine code N, air flow sensor inoperable, unhooked for now until we can afford the 200.00 sensor. Sucks gas a little, but is running like a champ after all other repairs. The check engine light never came on either.
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Saturday, September 26th, 2020 AT 10:27 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
I hate sensors. They are on everything and seem to not do much more than cause problems.

As far as the sensor, check a local parts store. I'm sure it will be much less money. Also, you may get one from a salvage yard for cheap.

Let me know if you have other questions.

Joe
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Saturday, September 26th, 2020 AT 10:27 AM (Merged)
Tiny
SOL MCNELLAGE
  • MEMBER
  • 1 POST
  • 1993 OLDSMOBILE CIERA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 95,000 MILES
My car will run for 20 minutes great then start to stall and cutout lose power. It starts right back up then stall again. On the highway I have to keep my foot on the gas if not it will cutout so I can not get struck in traffic. I have changed the crank sensor coil packs module fuel pump and the catalytic converter. I am struck and want to keep the car but I need for it to be reliable. Please help me
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Saturday, September 26th, 2020 AT 10:28 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi Sol McNellage, Welcome to 2carpros and TY for the donation

Check the fuel pressure if its within specs if okay test the throttle position sensor/mass airflow and knock sensor-also won't hurt to check the EGR valve
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Saturday, September 26th, 2020 AT 10:28 AM (Merged)

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