The 8th Gen Riviera Resource
 
HomeDashboardSearchRiviera Questions & AnswersWrite-Ups IndexRegisterRelated LinksLog in

Share
 

 Dimming

Go down 
AuthorMessage
RhinoFLA
Aficionado
RhinoFLA

Name : Ryan
Age : 31
Location : Port Richey, FL
Joined : 2007-02-27
Post Count : 1029
Merit : 4

Dimming Empty
PostSubject: Dimming   Dimming EmptyThu Nov 29, 2007 7:43 pm

I was sitting in line at arbys earlier, I didn't have any music playing which is rare for me.. it was totally silent and I started rolling up my windows, when the dome light dimmed, rpm's dropped 100, and I got a slight vibration.. I've seen things like this happen on overloaded circuits in houses and what not, but this seemed a bit strange.. any ideas
Back to top Go down
TonySmooth89
Aficionado
TonySmooth89

Name : Anthony
Age : 30
Location : Florida
Joined : 2007-11-14
Post Count : 2410
Merit : 16

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptyThu Nov 29, 2007 11:46 pm

altenator? though that wouldn't explain the shaking.
Back to top Go down
SC95Riv
Enthusiast
SC95Riv

Name : Chris
Location : New York
Joined : 2007-10-20
Post Count : 134
Merit : 0

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptyFri Nov 30, 2007 1:47 am

It happens to me too...I have no idea why, that is the beauty of aging electronics lol
Back to top Go down
BillBoost37
Junkie


Location : Enfield CT
Joined : 2007-11-28
Post Count : 769
Merit : 25

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptyFri Nov 30, 2007 6:39 am

May be the window motor drawing a ton of current. A window motor does take a good amount, however old unlubricated tracks/motors will take more power and at an idle in gear your alternator is spinning the slowest and has the least ability to provide the extra power needed.

Try to get a multimeter or scan on the car and check the voltage while operating the window. Most likely that would be the culprit. Lubricating the track and checking the motor may help the issue.
Back to top Go down
Mr.Riviera
Expert
Mr.Riviera

Name : Matthew
Age : 33
Location : Florida
Joined : 2007-01-17
Post Count : 4394
Merit : 101

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptyFri Nov 30, 2007 8:50 am

mine does it too. give it a little gas while rolling them up and it goes away. they just draw a lot of power at idle. ill have to try cleaning the tracks and motor, thanks for the tip Bill.

_________________
1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP
AMG C400 White on black -daily
Dimming Dsc_0110
Back to top Go down
AA
Administrator
AA

Name : Aaron
Age : 42
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18366
Merit : 241

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptyFri Nov 30, 2007 9:19 am

I did the voltage booster mod last month. Although I haven't had a chance to test everything, so far there seems to be less dimming and idle variation.

I also, I used the PowrTuner to raise my idle RPMs a tiny bit. I've found the car vibrates less and feels more alive after doing this.

_________________
'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

^^^ SOLD ^^^ frown

'05 GTO • 85k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26
Because fun


'70 Olds Ninety-Eight Holiday Coupe • 116k miles • 455 Rocket V8
Because cool


'95 Celica • 152k miles • 0-60: yes
Because free
Back to top Go down
http://www.cardomain.com/ride/657082/4
BillBoost37
Junkie


Location : Enfield CT
Joined : 2007-11-28
Post Count : 769
Merit : 25

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptyFri Nov 30, 2007 9:43 am

Another possible tip. The motors on the B'ville have a threaded area where you can insert a zerk (grease fitting) and give them a little lubrication in the worm gear area. This has been found to be helpful.

Not sure on the Riv motors though.
Back to top Go down
albertj
Guru
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7418
Merit : 148

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptyFri Nov 30, 2007 10:15 am

some ideas:

- push the alternator fan with your thumb, with the engine OFF, and see if you can move it. Maybe your tensioner has weakened over time - this is why some suggest chnaging it with the belt change.

- find out what the actual cold-cranking capacity of your battery is. A GM dealer, or Sears, or I think AutoZone, or others have the needed test equipment. My dealer pirate will run this test for free if you are in the shop for any other service (even just an oil change). You will likely find that your battery's current capacity is below the spec. When the ligts dim, you're drawing more current than the battery and alternator can put out at a given voltage - so voltage drops under the load and the lights dim. neutral

- remote chance that you have bad grounds. Find them and clean them. You can smear alittle conductive grease (such as no-al-ox, you can get it pretty cheap at Home Depot) on the terminals and bolts when you reassemble. If you use the conductive grease, they won't corrode so fast again, and maybe not at all. joker

- what BillBoost wrote about the window current draw - re-read that. Being a GM car, a replacement for the window motor, if needed, should not be too tough or too expensive if you are handy. happy It could even be that the connections are corroded a bit and now have fairly high resistance, and so cleaning them will reduce current draw. Bill's recommendation (lube the tracks and check the motor) works for me, in addition to the above.

Happy wrenching

Albertj
Back to top Go down
Ridin-Rivi
Enthusiast
Ridin-Rivi

Name : Darrin
Age : 34
Location : WI
Joined : 2007-05-22
Post Count : 242
Merit : 0

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptyFri Nov 30, 2007 10:37 am

My car does that a little bit as well. Might be a Riviera thing....
Back to top Go down
albertj
Guru
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7418
Merit : 148

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptyFri Nov 30, 2007 4:18 pm

Personal experience. When my riv did this dimming thing, it was the battery. It had more than enough juice to start the car BUT capacity hd diminished (no surprise, it was ~10 years old).

A volo I had did it, one time it was a loose alt belt and another time the alt brushes had given out. That one was fun, I had it repaired on a sunday afternoon by a, umm... very conservative ex-Navy shipboard technician. He is a *character* and he really knows his stuff. Has an interesting business in an area even more rural (arkport) than I live in. Is 'open' 24 hours a day by appointment, and guarded by a feral cat. Anyway, he will repair (and I believe this after seeing him work on that Bosh alternator for the Volvo) any motor/generator that he can properly open and either has or can make parts for.

Albertj
Back to top Go down
etosino2009
Enthusiast
etosino2009

Name : Evan
Age : 29
Location : columbus, ohio
Joined : 2007-08-27
Post Count : 220
Merit : 0

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptySat Dec 01, 2007 10:32 am

yup i experince the same thing, sometimes when im going at a slow speed and turn, when i press the gas a little to move up, and when i let off the gas.
Back to top Go down
RhinoFLA
Aficionado
RhinoFLA

Name : Ryan
Age : 31
Location : Port Richey, FL
Joined : 2007-02-27
Post Count : 1029
Merit : 4

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptySat Dec 01, 2007 10:46 am

well at least it's not just me lol..
Quote :
When my riv did this dimming thing, it was the battery
my battery is brand new, it's an optima gelcore, so it might not be the same case, but like bill said the windows just draw alot of current. aaron was that the caspers booster?
Back to top Go down
rivcop
Amateur
rivcop

Name : Kevin
Age : 41
Location : Cincinnati, Ohio
Joined : 2007-10-27
Post Count : 22
Merit : 0

Dimming Empty
PostSubject: Re: Dimming   Dimming EmptySat Dec 01, 2007 1:58 pm

Mine does the same thing, almost feels like the motor is going to stop.
Back to top Go down
Sponsored content




Dimming Empty
PostSubject: Re: Dimming   Dimming Empty

Back to top Go down
 
Dimming
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Riviera Performance ::   General Tech :: Audio & Electronics-
Jump to: