Question about 1999 Buick Regal

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Electrical problems Hasards and turn signals sometimes start ok then slow down or stop, sometimes won't start immediately but few seconds later... Main lights sometime come on starting the engine, sometimes no Engine sometimes stall at idle or low speed...

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  • Buick Master
  • 45,468 Answers

Have a load test done on the battery for failing cell and have the output of the alternator checked as if the battery is faulty then the alternator has trouble supplying enough current to run every thing electrical

Posted on Jul 25, 2013

Testimonial: "Thanks Bill...the problem comes from somewhere else it had new battery, alternator checked ok, BCM changed ..."

  • P LaBuissonniere Jul 26, 2013

    I resolved the the engine stalling part of the problem (poor ground of the bettery) but still malfunction of turnsignals and hasards

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 6 Answers

SOURCE: erratic idle speed

Have the fuel pressure checked. Could be an erratic pump or pressure regulator.

Poppascott

Posted on Oct 12, 2008

  • 10 Answers

SOURCE: 2004 Buick Rainier, vortec 4200

may be intake manifold leak also check fuel injectors they may be clogged

Posted on Feb 24, 2010

  • 395 Answers

SOURCE: The car periodically stalls out

1 Inspect Carburetor Dirty and Improperly Functioning Carburetor. 2 Inspect Carburetor Incorrect Carburetor Adjustment. 3 Inspect Carburetor Worn, Faulty or Damaged Carburetor.

Posted on May 23, 2010

  • 1857 Answers

SOURCE: HI, MY CAR START AND 2 SECONDS LATER DIES,,, THIS

bad fuel pump, bad relay, bad crank sensor, bad ignition module. Being a 13 year old car it could be anything. To start with you need to check for codes the same day this happens.

Posted on Jun 10, 2010

Testimonial: "THANKS"

emissionwiz
  • 76846 Answers

SOURCE: Car stalls on occasion, usually

Hello
This problem is in most cases caused by fuel residue sludge building up inside a little valve that controls idle speed, the symptoms are stalls when coming to a stop and other things like idle speed goes up and down (idle surge) and hard starting, I would like you to do a complete cleaning of the Idle speed control valve and the throttle inlet blade, it should cure the problem. Please follow the instructions exactly or it will not work. Here is the procedure I use at work to correct this.

To correct this problem I want you to get a can of intake cleaner (ABOUT $5.00) from any local auto parts store like NAPA or Carquest, do not use carburetor spray, intake cleaner only or u will damage the Teflon coating inside the throttle valve and air bypass valve, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Jan 28, 2011

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1 Answer

1997 buick skylark temperature sensor location


the radiator fan gets the power from a relay that is energized by a signal from the ECM that in turn gets a report from the coolant temperature sensor
AT this point I would be thinking that there is considerable resistance in the relay
you say the fan works a bit so the temp sensor is reporting toe the ECM which is turning the relay on but power is low from there
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Hasards dont come on on a 2000 isuzu trooper


No need to panic-this can SEEM TO be caused by a couple of things, but it is fairly simple to determine exactly what is causing this flasher circuit condition.
First, turn on your flashers, however you have to do it, and walk around the truck to check that all bulbs are working (at least one on each corner). Turn signal and hazard flasher relays are thermal circuit interrupters and are current sensitive and will not work properly with too few or too many bulbs in the circuit. (This is usually a big problem when switching over to LED lamps, as LEDs only draw a fraction of the current that the bulbs do. This causes the relay to either not flash at all or flash very fast and triggers warning circuits on newer cars) If there is one or more bulbs out, they must be replaced.
That being said, I doubt that alone is your problem. Here is a general automotive wiring primer aimed at the turn signal, hazard, stop, and running lights on most all motor vehicles.
Hazard flashers are required by D.O.T. safety standards on all motor vehicles that may ever be used anywhere near a public road. They are also required to be able to be used without the ignition key. This means the flasher circuit for hazards is fed thru a fuse that connects straight to the battery and is energized at all times.
Turn signal circuits often share the same flasher relay as the Hazards, even though the power for them is switched through the ignition key. Power for directional blinkers connects to a fuse, then the ignition switch, then to the battery.
So, if you have to turn on the turn signals (is the key on?) to get hazards to work, that means they are not getting power direct from the battery, but can get it when the turn signals are on because they both use the same relay. This is usually the case on all vehicles; If 4-way flashers and turn signal are both on at once, the 4-ways override the turn signal and force all signal bulbs to flash. The turn signal never forces one side of the hazards to stop blinking.
So, where does that leave us? You simply have a blown fuse, my friend. The hazard lamps fuse may also power the cigarette lighter, dome light, or other "always on" accessories. This varies with make & model, but the Hazard Lps fuse is usually well marked in the fusebox. If the fuse blows again shortly after being installed, do not put in a larger one! Try one more. If it also blows immediately, there is a problem with the wiring, or a bulb could be in wrong and shorting to the socket ground. Try removing all the flasher bulbs and trying the switch(it won't flash or "tick-tock") again. If the fuse does not blow, you have found the problem. Good hunting!

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1 Answer

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