Dim headlights, runs awful - Third Generation Forum

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Dim headlights, runs awful
Saturday, December 12, 2009 8:01 PM
My car refuses to go if under 3/4 throttle, it spits and sputters and jerks, and my headlights are dim and my highbeam indicator is always on, anyone know what might be the cause of this?


1991 Skyline GTR
1996 Sunfire


Re: Dim headlights, runs awful
Saturday, December 12, 2009 8:24 PM
The spitting sputtering Jerking sounds like a possible fuel related issue, as for the high beam indicator being on that could be a wiring problem but that is just a guess on my part.
Re: Dim headlights, runs awful
Saturday, December 12, 2009 10:11 PM
Do you have an DTCs?



Re: Dim headlights, runs awful
Sunday, December 13, 2009 9:57 AM
no dtcs, used to only happen when the car got warm now its all the time.


1991 Skyline GTR
1996 Sunfire

Re: Dim headlights, runs awful
Sunday, December 13, 2009 10:06 AM
Bad ground?

Bad battery?

Bad alternator?

when was the last time you changed the plugs and did a tune up?

how many miles?

other than that it could be fuel filter or pump.

if the electrical system and charging system are all in good shape, the dim lights could be from a low idle, which is fuel or ignition related most likely.

does it ldle ok?


"A car just isn't a car without a little blood, sweat, and beers." -- Shadowfire
Re: Dim headlights, runs awful
Sunday, December 13, 2009 11:47 AM
236,xxx kms car has rough idle and stalls, new fuel filter, plugs, wires, tps, 02, changed iac, car used to be ok until it hit operating temp now it runs like @!#$ all the time.Any common places the headlight wires or grounds get bad?



1991 Skyline GTR
1996 Sunfire

Re: Dim headlights, runs awful
Sunday, December 13, 2009 6:55 PM
Checked your injectors?



Re: Dim headlights, runs awful
Sunday, December 13, 2009 7:31 PM
yup swapped one out cause the top was cracked and it was leaking fuel


1991 Skyline GTR
1996 Sunfire

Re: Dim headlights, runs awful
Sunday, December 13, 2009 9:15 PM
Is your cat clogged? A lot of back pressure will make it run crappy.



Re: Dim headlights, runs awful
Monday, December 14, 2009 12:03 AM
Got a multimeter? I'm curious what your alternator is putting out.



Re: Dim headlights, runs awful
Monday, December 14, 2009 1:20 PM
it finally threw a code, 02 sensor high voltage. I just put a new 02 on but it was a cheap ebay sensor, guess i'll have to get a good one.


1991 Skyline GTR
1996 Sunfire


Re: Dim headlights, runs awful
Monday, December 14, 2009 3:32 PM
Battery voltage is 12.6 and alt is between 13.8 and 14.4


1991 Skyline GTR
1996 Sunfire

Re: Dim headlights, runs awful
Tuesday, December 15, 2009 11:31 AM
headlights are gtn 12.26v with the car off, when i pull the relay the pass headlight stays on is it supposed to?


1991 Skyline GTR
1996 Sunfire

Re: Dim headlights, runs awful
Wednesday, January 06, 2010 5:06 PM
John Lenko wrote:Got a multimeter? I'm curious what your alternator is putting out.

i instantly thought that too but he is getting decent voltage...i was almost sure thats what it was



My car may run 18s, but I can do your taxes in 10 seconds flat.
JBO lube - they would never have enough in stock and we'd never see RodimusPrime again
Re: Dim headlights, runs awful
Wednesday, January 06, 2010 11:29 PM
Michael Keigan wrote:Battery voltage is 12.6 and alt is between 13.8 and 14.4


Are both of these numbers with the car running?


- Your not-so-local, untrained, uncertified, backyard mechanic. But my @!#$ runs
Re: Dim headlights, runs awful
Friday, January 08, 2010 6:42 PM
turns out i had a headlight groundin out and a vacuum leak and now i have a weak fuel pump, good thing i bought a parts car.


1991 Skyline GTR
1996 Sunfire

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