Question about 1991 Buick Regal

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The warning lights started going on and off, all the gauges started going crazy. Then engine lost power and died. Towed it, put it on the charger and it started but would not stay running. One person said the alternator and another says the map sensor?

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Most likely the alternator........ map sensor failure would bring up a check engine light and code not the crazy gauges and lights
hope this helps...Good Luck!

Posted on Dec 15, 2008


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Oil pressure problem

if you have a 4jx1 3.0 engine then the engine wont run properly because engine oil pressure is what drives the direct injection system.
Check for blocked oil filters 2 pieces if not remove the oil pan and check the oil pickup tube for oil sludge blockage

Jul 14, 2014 | 2001 Isuzu Trooper

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Oil pressure problem

in a shop we ignore the dash gauges and use REAL gauges.
we attach a real gauge to the sender port. on engine block.
and read the true pressure.
the lamp on most cars go on at 3 to 5psi.
this is catastrophic failure. that low.

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Jul 14, 2014 | 2001 Isuzu Trooper

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Why won't truck stay running. Altenator bench tested good, but running test was low amps. Starter tested bad and replaced as well as corroded negative battery cable.

Your bad cable may have prevented the battery from being charged up good. Put a battery charger on it, or replace it if over 4 years old.

So the problem is it starts and then dies? How many amps did the alternator show? Was it enough to run all power circuits and charge the battery as well? That could be a concern. It is possible you have a bad ignition switch, but first check the fuse for the gauges in the instrument panel fuse block-it may be labeled "gauges" or "meter". The fuse should get power with key on, and then power is sent to the gauges on the dash. Without a voltmeter to test for power coming out of the switch, it's kind of a guessing game. If power is not getting to the gauges, it may also not be going elsewhere out of the switch.

Any issue with a security or theft alarm light staying on? That would disable the engine from running. Post back with year, make, model, and engine size. Maybe I could look at a wiring diagram for further help.

May 26, 2014 | 2000 Mercury Cougar

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2003 Jeep Grand Cherokee jerks hard then the rpms go high then almost to zero

which engine?
sounds to me like you need to watch the dash voltmeter
if it reads zero , running the PCM , and spark all die
as does engine stall.. so that is first. Voltage.
if the gauge is missing like on some cars, (sad) add one
or connect any voltmeter to the CIG lighter socket (aka. power port today)
or go to any auto store and buy the cheap tool that fits there.
called a battery/alt tester (some have LEDs that shift to good , bad)
a real voltmeter works better showing real volts.
When and engine dies. the PCM sees this, and tries everything
in its power to stop that, (fuel and air supplies)
but failed. as the PCM falls below the 300 RPM it knows it lost the battle and then goes to boot up self tests. with the CEL glowing
if it fails to show the CEL, (stalled) that means in all cases...
the PCM lost power.
lost DC power distribution. for many a reason.

from loose or bad fuses, or bad ignitions switch or as per above
filthy battery lugs.
how i fix these, (sure it must fail to fix it....... or go broke guessing)
  1. i drive with the voltmeter connected full time. per above.
  2. I say it drop. to 0v driving. oops. that is bad.
  3. I then move the red test lead (black is on body ground)
  4. I move it forward in the path of power distributution, that means to the fuse box in cab that runs ECU power.
  5. I then see if the power is lost before that fuse or after.
  6. i before i work to the engine bay main fuse box. PDC.
  7. I then find the point power does not drop
  8. the failure IS between those 2 points,!!!

Mar 20, 2014 | 2003 Jeep Grand Cherokee

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Check engine oil pressure light coming on and causing engine to die. After 5 minutes, no light and no engine trouble.

Yes I would say the oil pressure switch is faulty. The oil pressure gauge uses a different sensor, so if the gauge did not drop but the warning light came on, I would have the warning light switch checked. If the warning light comes on, the fuel pump will stop getting power and you will lose fuel pressure too.

Jun 27, 2013 | Cars & Trucks

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Engine died going down the road like it ran out of fuel & wouldn't start

could be crankshaft sensor or fuel filter,check air filter.

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Gauges and Warning Lights Are Going Crazy

Hi there! I am having the same issue. It seems like every time that it rains a lot this happens. Check the battery though, the ground connection of my battery is wet every time this happen's. Check if the battery is damp or wet, that is usually what causes it for me. I am in the process of getting a cover for it, or putting electrical tape over it.

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Brake failure urgent , abs light, low battery

So many lame responses...I went through this same experience and can tell you in my case it was the alternator. All of the warning lights such as the ABS light, airbag light, the warning about the brakes are all because the alternator is not providing the DC voltage all of the car's sophisticated electronics need to correctly monitor these subsystems' status. Mine left me high and dry by the side of Interstate 5 needing a tow. The low battery warning was off and on for about an hour before all of the other warning lights came on, and then about 5 minutes later every needle on the dash went to zero and the car died. After sitting waiting for the tow, it did start up again, but we got it towed to a dealer (thank god it got us within 8 miles of a dealer! the first warnings started when we were in the sticks) who diagnosed it as an alternator. $1200 and two days later and all is well again.

Apr 16, 2010 | 2001 Volvo S60

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I have a 1995 chevy cavalier 4cyl. I was driving 30 klm.I think I ran out of gas,gauge was close to empty.Car died,turns over no start,wanted to push off road BUT it would not shift out of park?Had to get...

Sounds like the fuel system lost its prime.

Remove air cleaner, pour about 1/4 cup gasoline into the throttle body/carburetor, put air cleaner back on, start car. Repeat until it runs. You may get a small backfire in the throttle body, so don't be looking at it while someone else starts it. Good idea just to stand back from engine when engine is cranked.

May 06, 2009 | 1988 Chevrolet C3500

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Pt idle went crazy and car died now throwing codes

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Nov 09, 2008 | 2001 Chrysler PT Cruiser

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