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Posted on Jul 05, 2014

1993 pontiac grand prix 3.1 le stalls at normal driving speed and is hard to restart.After it restarts I can hold the gas down and put it gear and take off.It runs great with accellerator opened up wi

Sometimes it starts and runs fine. But after I drive it a few miles it dies and is hard to restart. I have to push down on the gas to get it going again. If I hold down on the gas and put it in gear it will run great with gas opened up.

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Oct 21, 2008

SOURCE: 2000 grand prix 3.8L code comes up as evap. system what could it be?

I had this problem and I replaced the mass air flow sensor and it runs great, was told by my mechanic it is a hard problem to diagnose. I just unplugged the maf sensor and the car ran better so i replaced it.

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Larry Chandler

  • 1149 Answers
  • Posted on Nov 05, 2009

SOURCE: no power problem

Hi:
to help figure out what is going on with your car, the first thing to do is get the code downloaded to see what the cause is. A local auto parts store, such as auto zone, can download your codes and get you in the ballpark as to what failed. If they have a parts recommendation, give it a shot...

honeymokey

honeymokey

  • 3113 Answers
  • Posted on Apr 13, 2010

SOURCE: 1990 Pontiac 6000 2.5 after driving, car stalls when put in gear.

You need to replace the TCC solenoid under the side cover pan of the transmission. You can also unplug the wires that go to the transmission in the front. After that it will not go into overdrive but it will stay running at stop lights untill you have it repaired.

Anonymous

  • 55 Answers
  • Posted on May 09, 2010

SOURCE: 1999 pontiac grand prix 3.1 starts great but sputters throttling

check tps sensor check idle air control valve or iacv for proper func

Jose Mederos

  • 109 Answers
  • Posted on Jul 04, 2010

SOURCE: 1999 Pontiac grand prix dies while I am driving

Second guess would be, oxygen sensors, they might fail and cause your computer to receive the wrong signal thus making it feed MORE fuel than needed or LESS fuel than what it needs, check it out, let us know if we were close.

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Related Questions:

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1answer

My 2004 pontiac grand prix stalls and randomly shut off but will always restart

Does it stall at idle or going down the highway? How long since a tune-up? Can you check for applicable trouble codes? Some of the national brand auto stores will check codes for free.
Use a gage and check proper fuel pressure. Intermittent issues can be hard to track. If a code is set, maybe freeze frame data will show what was going on when it stalled?
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Why is my 1993 Pontiac GP LE 3.1 hard starting,has a rough idle and smoking from tailpipe.

Better get this one to a mechanic. Sounds like you blew a head gasket.
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1993 pontiac grand prix 3.1 le stalls at normal driving speed and is hard to restart.After it restarts I can hold the gas down and put it gear and take off.It runs great with accellerator opened up wide.

that is flooding, (lots of causes that)
that throttle hold down is in the operators guide, called WOT unflood mode. it cut fuel 100% it starts via, excess fuel, in engine.
clears then starts and runs.
ever do a full tuneup?
Flooding. (engine good)
bad spark. Cold starts need perfect spark , unlike a hot engine.
so tune up time, for most cars 60,000 miles, some need sparks
every 39k (RTM read the manual in glove box,) it tells you.
as does the FSM state this, and how.
If flooding is not tune up related, then it is>
1: leaking injectors.
2: too high fuel pressure.
3: bad inputs to the PCM (like ECT reads too low temp) scan IT.
4: ISC stuck closed ,staring, the engine of air as start.
to test this #4 theory, (told in newer car operators guides) is to
start car with 10% throttle , start now? that may prove ISC stuck closed.

ever examine spark plugs, they speak volumn's.
these are new plugs, and are soaking in raw fuel.
on old plugs. its hopeless. (even weaker spark)
we use tools to find cause, got tools?



1d8b9d14-8c9e-4073-91fa-ed9d17283103.jpg
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Location of FPR on 93 3.1multi-port- pontiac gp le

If the FPR is bad, gas will come out of it when you remove the vacuum line. John C ... 1993 pontiac grand prix 3.1l fuel leak under throdal body
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Grand prix bogs when coming off of a stop

Have you checked at all the fuel pressure or the fuel pump?
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Where can i find the mass air senor on a 1990 pontiac grand prix please help!!!!!!!

This car doesn't use a Mass Airflow Sensor, it uses another way of measuring the air entering the engine.
The problem you have is likely caused by the problem listed below.

ngine stalling issue at low speeds

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control



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1999 Pontiac Grand Prix GTP. Mileage 132000. 1 to 2 shift normal. Trans. will not upshift into 3rd. gear, goes to 4th. It will downshif to 3rd. from 4th. When the trans. get hot from stop and go...

If tranny fluid is clear and at normal level, then the issue is with the transmission - it is getting ready to go sayonara.

Better get that fix before you get stranded.
0helpful
2answers

1993 grand prix dying

provided you don't have a vacuum leak, (check all hoses for tightness and cracks with engine running) it's probably your idle air control valve or sensor.
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Car drives good but it died while driving

I'm leaning toward a bad crankshaft sensor. There's a couple of experienced GM guys on here, so we'll pass it by them first just to be sure.
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