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Lights dimming around 3000 rpm going uphill

Lights dim and battery voltage gauage goes down when climbing a hill and the engine is around 3000 rpm

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Posted on Jan 02, 2017

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SOURCE: When accelerating alternator light comes on.

Possible loose or worn alternator belt. Check the condition of the belt. If it's worn, replace it. If it's just loose, tighten it up.

Posted on Jan 24, 2009

  • 362 Answers

SOURCE: '03 Focus at between 2-3000 rpm 'bogs down' then surges

Your vehicle's computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem. There are test that will need to be done depending on what codes are present to determine the proper repair.

Posted on Jan 28, 2009

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SOURCE: battery voltage/rough idle

One thing that you may want to try is go back to the auto parts store and rev the engine up to your normal RPM when your driving around 60mph.  I work at an auto parts store and I have tested alternators that have tested fine, then we revved the engine and then the alternator failed the load test.  But I would say that your alternator is bad just from what I hear.

Posted on Feb 02, 2009

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SOURCE: 1995 ford bronco 5.8l surges while going uphill

check vacume lines, knock sensor, and air intake sensor

Posted on Feb 18, 2009

  • 2007 Answers

SOURCE: 1996 ford countour gl. 4 cyl rough idle. rpm goes

Change fuel filter.

Posted on Aug 18, 2009

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2000 mitsubishi montero sport Ls. My car lights goes dim the speed want go past 20mph then the engine shuts off

Pull DT codes and advise but for now I would simply check charging system. It's like your battery is dying hence dim lights and inadequate voltage for engine control/

May 06, 2014 | Cars & Trucks

1 Answer

Alternator ford aerostar

To remove the lead from the battery to the alternator while it is running is to invite a destroyed alternator . Varying voltages with engine RPM is indicative of a bad battery or problem alternator regulator . Have a load test done on the battery to check for cell problems and have the alternator bench tested to check the performance .

Feb 24, 2014 | Cars & Trucks

1 Answer

Head lights dims out

old post day, Geo underdogs.
is engine running, seem yes, pretend yes...
high and low beams dim (means weak not low or high beams)
dim bulbs. all elements, left and right sides?
well first is battery voltage
use a $10 walfart DMM meter., (set to volts)
13.3. to 15vdc is the voltage running, on a hot engine rpm is 700+
RPM not 400. so, if all that is good, the ALTERNATOR IS doing its job, yes, the regulator is inside the alternators and changes voltage , by SENSING batteries needs, and sensing driver added loads, (accessories)
so if battery voltage is good, the what is it,
well that is easy head lamp failure
got DRL do you have the infamous, and pesky DRL daylight running lamps as the law requirements in CANADA,
next time say DRL or canada, ok?

if all lamps are dim on the HL,
the the ground to them are bad.
there are 4 bulbs , 2 high 2 low, all for dim is bad ground there.
the Headlamp relay sends 12vdc to all 4bulbs, and most read 12v or more.
the lamps are grounded by the HL combo switch on THIS car
the ground must be good to this switch 0v, HL onl.
or the ground is bad. a white/black wire called G200
if 12vdc is weak (low) to HL then the relay or wire to it are bad.
if the ground is not 0v, (no more than 0.5vdc) then the ground is bad. if the ground is good, then the HL switch is bad and if bad gets hot and smell... (melting plastic in side)
there is the full answer, sans DRL> (a longer story that)

Feb 24, 2014 | 1991 Geo Prizm

1 Answer

Flickering/Dimming Lights

you forgot, does it do that running engine or not.?
ok the main battery is car is doing that.
use a voltmeter, at the battery or even at the CIG lighter port.
12.6v DC, not running. rested. running voltage is 13.3v to 15vdc,

start engine, is rpm above 800 RPM at all times, or more?
if not, the alternator will be too slow, and drop out and when that happens , the lamps will dim. (a 3 volt drop does that)
1: all fuses good
2: battery term lugs clean, not green
3: fan belt to alternator not loose. slipping.
4: charge lamp on dash not ON, running.
5: check engine lamp not on, running (if yes,scan it now)
6: test the battery , batteries are LOW life objects, (die-easy-not-hard)
test the battery , using a load tester or take it in for testing, it's free.
or try a spare battery from another car. do not reverse POLARITY.
this gets the lions share.

Feb 04, 2014 | Honda CR-V Cars & Trucks

1 Answer

Head brightin n dim heater goes up n done

running or not , the engine, that be big time , important....??????
if running is engine hot cold (engine coolant, not air temp)

this is called bad power (12vdc) distribution.
or is the alternator failing
or is the engine RPM going to low, 800 is normal for most cars.
if not running, its a bad battery (or just discharged) or is corroded battery lugs (service them)

if engine RPM drops too low the Alternator will just cut out
and the 15v power is now 12. a visable dim can be seen.
causes running. are
1: alternator belt slipping, sure service it.
2: alternator regulator bad.
3: battery bad. or bad lugs.

if you have a voltmeter all this is easy.
got one?

Jan 31, 2014 | Honda Civic Cars & Trucks

1 Answer

VW 2013 Golf Automatic stays in 1st gear when driving uphill. Have to pull over after hill, stop, park and then go for engine to autocorrect. VW service center mechanic says this is how it's supposed to be...

There is no problem with the revs going to 3 or 6. The revs need to climb so you have enough power to climb the hill (if the car upshifts under heavy load it may stall). But are you saying that the only way you can get it to shift out of first is to turn off the car? if so, then that is obviously not supposed to happen. It should shift shortly after you start driving down hill.

Aug 20, 2013 | Volkswagen Cars & Trucks

1 Answer

93 nissan pathfinder charging problems

check for voltage at the battery with the engine running. You should see 14 plus volts. Now turn on the lights, bower motor, and whatever else you can to put the maximum draw on the battery. If the voltage drops below 13 volts the alternator is bad.

Feb 03, 2012 | 1993 Nissan Pathfinder

1 Answer

On my '95 oldsmobile 88 whenever i go above 3000 rpm to fast my car begins to stall out before it finally stalls out. before it does the light and all electronics begin to dim and intensify like a pulse or...

After the stall does the car start back up?. the first place to start would be to have the charging system checked and make sure its tested also at 3000 rpms and see if the voltage is pulsing up and down, then take a look around at your battery connections annd also the ground cable , make sure the ground connections are tight and clean, the one to engine block and also the one to the body of the car, start here with these things first,good luck.

Feb 26, 2011 | 1995 Oldsmobile 88

1 Answer

Engine slow from a stop sign and lights were dim

What you described is the alternator needs to be replaced, the voltage regulator or the rectifier in the alternator has gone bad causing your light to go dim which indicates that the Battery is not being charged at low engine RPM speeds. Replace the alternator and Battery if the it's more then 5 years old. Good luck and if money is an issue, you can buy the alternator and battery at a Salvage Yard and they have a 90 day warranty.

Dec 16, 2009 | 1992 Honda Accord

1 Answer

Engine bogs and studders in low rpms usualy when warm

check head gasket look in radiator when cold,see if the water bubbles when cranking.

Jan 05, 2009 | 1995 Dodge Stealth

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