Question about 1994 Buick LeSabre

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Car starts and stalls

I have checked the fuel pressure, the wires, fuel/air filters, spark plugs, changed fuel pump, whats happening...

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  • little-f Nov 15, 2008

    Yes, the car was hooked up to fuel pressure gage when it stalled.

  • little-f Nov 18, 2008

    Your comments are helpful, but untill I check into the last suggestion I can't really rate how helpful it was. It's an idea though.

  • yadayada
    yadayada May 11, 2010

    Did you have the fuel pressure guage hooked up when the engine stalled?

  • Anonymous Mar 14, 2014

    Can start car with start fluid, changed out fuel filter it had fuel in it and in the lines but car won't start.

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The chance of the Power Train Control Module (PCM) failing is very small, about 3% per industry research, so expert ndguy2481 is giving bad advice, it is more likely the crankshaft position sensor or the ignition module have a problem when they warm up. Run a test on the PCM to retrieve the trouble codes, I know there will be some. The connector to do this test is under the dash below the steering wheel under the dash panel.

Posted on Nov 15, 2008

  • yadayada
    yadayada Nov 18, 2008

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The brain might be going out Try taking it to reasonable shop and have them test the brain Looking to out for u Shaun

Posted on Nov 15, 2008

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1977 jeep cj7 will not start very well and when it does it turns over a little and then shuts down any answers ?? the fuel pump seems to be ok.


If I remember correctly that Jeep had a mechanical fuel pump attached to the engine. I suggest you disconnect the fuel line before the fuel filter and put a pressure gauge on the line. Crank the engine for at least 15 seconds and go see if you have at least 7 lbs of pressure. If not, you need a new pump. It that was good, now disconnect the line AFTER the fuel filter and see if you have a sufficient volume of fuel coming out. For that I suggest you have someone else crank the engine while you hold the hose in a pail. If the stream is weak, change the filter, reconnect the line and see what happens. If it still starts and stalls it could be a clogged carburetor.

Did you do a spark check by holding the plug wire away from the engine while someone cranks it? With a spark plug in the wire, hold it at least 1/2 inch from the engine while someone cranks it. That spark should be able to jump off the plug and into the engine. If not, you have a weak coil. If the spark is strong and you have the correct plugs installed, then it almost has to be the carburetor.

Good luck with that, I have fond memories of older jeeps.

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My 94 Toyota Camry 4 cyl is running really rough and stalling out once the engine warms up


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Solution:
Check the following:
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I have a 1990 mitsubishi might max it wont run smooth unless you keep your foot on the gas and keep the rpms up a little bit and it wont drive cause it stalls everytime you try to move it. ive replaced the...


You've already eliminated the spark plug & wireset, distributor cap & rotor.
Sounds like your car needs a tune-up, specifically, the PCV (positive crankcase ventilation) valve, and/of the EGR (Exhaust Gas Recirculation) valve.

Components checked/replaced during a tune-up are:
air filter
motor oil
motor oil filter
breather filter
fuel filter(s)
fuel strainer
PCV valve
EGR valve
spark plugs
spark plug wires
ECM or distributor cap & rotor
cabin air filter
transmission oil filter
transmission oil
engine coolant
check all vacuum hoses and lines

Troubleshooting the no-start condition - from the 1990 Mitsu Mighty Max Repair Manual:

Priority Action Part Type -- Cause
1 Inspect Battery -- Battery Discharged or Faulty.
2 Inspect Battery Cable -- Corroded, Broken, Shorted or Poorly Connected Battery Cable.
3 Inspect Distributor Cap -- Distributor Cap Cracked or Burned.
3 Inspect Fuel Filter -- Clogged or Dirty Fuel Filter.
5 Inspect Ignition Coil -- Faulty Ignition Coil.
6 Inspect Wireset -- Worn, Damaged or Faulty Spark Plug Wire(s).
7 Inspect Spark Plug -- Incorrectly Gapped or Fouled Spark Plug(s).
8 Inspect Starter -- Starter Motor Faulty.
9 Inspect Fuel Pump -- Low Fuel Pressure.
10 Inspect Solenoid Switch -- Faulty Starter Solenoid Switch.
11 Inspect Fuel Pump Relay -- Faulty Fuel Pump Relay.
12 Inspect Fuel Injector Pressure Regulator -- Faulty Fuel Injector Pressure Regulator.
13 Inspect Ignition Switch -- Improperly Connected or Faulty Ignition Switch.
14 Inspect Starter Drive -- Faulty Starter Drive.
15 Inspect Fuel Injector -- Dirty or Worn Fuel Injectors.
16 Inspect Fuel Pump Strainer -- Clogged or Dirty Fuel Pump Strainerat.
17 Inspect Engine Control Computer -- Incorrect Operating Information Being Delivered and Sent From The EEC.
18 Inspect Fuel Tank -- Fuel Tank Empty.
19 Inspect Carburetor -- Carburetor Flooded or Faulty Choke.
20 Inspect Distributor -- Worn, Loose, or Incorrectly Installed Distributor.

Aug 17, 2011 | 1993 Mitsubishi Mighty Max

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