drigo210 Posted March 14, 2011 Report Share Posted March 14, 2011 When im driving my Tahoe or when i start it up and its parked it does the following things. 1) The Voltage goes up and down aswell as the rpms 2) Lights dim and get strtonger along with the voltage when it does this. It does those things when im either parked or when i am stalled at a red light but as soon as i accelerate it stops doing that until i once again stop or park it. i need help please so i can figure this out because this is borrinw the hek out of me. Help would greatly be appreciated. (soorry if this is the wrong forum for this question) Quote Link to comment Share on other sites More sharing options...
Guest Posted March 14, 2011 Report Share Posted March 14, 2011 what year tahoe? also what do you mean by "stalled at a red light"? do you mean that your car shuts off? or do you mean just idling. Quote Link to comment Share on other sites More sharing options...
drigo210 Posted March 14, 2011 Author Report Share Posted March 14, 2011 should of made that more clear. when im idled at ared light and its a 2001 Quote Link to comment Share on other sites More sharing options...
That1Kid Posted March 14, 2011 Report Share Posted March 14, 2011 Does it feel like its "chugging". Almost like its gonna stall? If so, it may be a timing issue. Having the same issue with my truck now. Quote -98' Ford Expedition (Rest in Peace) -AVH-P3300BT -Crescendo BC5500 -4 18" DC m2 Level 3. Link to comment Share on other sites More sharing options...
AA98hoe Posted March 14, 2011 Report Share Posted March 14, 2011 (edited) You got a serious idle problem. Its could be a dozen things, put it on a scanner a read the codes. Edited March 14, 2011 by dc98hoe Quote TEAM DC AUDIO VEHICLE:98 chevy tahoe 2wd 3-4 drop HEADUNIT:alpine 9886 PREAMP:arcaudio FRONT STAGE:4-6 1/2s selinium,DD component set and 4-selinium tweeters in each door KICKPANELS:jl audio 5 1/4 REAR DOORS: dd components 6 1/2s HIGHS AMPS:zapco 750.2 on front doors,zapco an another 750.2 on kicks and rear doors SUBS:4-ascendant audio 18s with 5 spiders in a custom box built by KINGSUV SUB AMP: 2-dc7.5s ALTERNATORS: 3-mechmans 1- 425comp, 1-smd spec350, 1-270 with adj voltage harness on custom dc bracket WIRE:10-runs 0g front to back BATTERIES:6-d1400s TL results:157.1 at 38hz and 156.8 at headrest score @37hz. STATE AND NATIONAL RECORD IN MECA S5. Link to comment Share on other sites More sharing options...
Superjay Posted March 14, 2011 Report Share Posted March 14, 2011 sounds like an ignition issue...like one of many many sensors has failed. Quote Principal JTech Consulting - Leader in 12-Volt Training and Product PlanningIt's not about how much power you have, but how well you use it Link to comment Share on other sites More sharing options...
drigo210 Posted March 14, 2011 Author Report Share Posted March 14, 2011 ive done some research and allot of the trucks and cars around this year are having the same problem and there fix is clearning the (AIC) Quote Link to comment Share on other sites More sharing options...
Bigg Boy Posted March 14, 2011 Report Share Posted March 14, 2011 Unplug the alt and see if the truck idles fine. I had this happen to me when my alt was bad. Above 1200 rpms it was fine, at idle I would bounce between 12-14.7v Quote Dodge Magnum with custom 300c front end, laid out on air bags *4) 12" Cadence Daytona walled *1) AudioQue 20k *270a DC Power Alt (Dual coming soon) Link to comment Share on other sites More sharing options...
langsdon2 Posted March 14, 2011 Report Share Posted March 14, 2011 Unplug the alt and see if the truck idles fine. I had this happen to me when my alt was bad. Above 1200 rpms it was fine, at idle I would bounce between 12-14.7v Be careful doing this you can fry your entire computer system. Quote Bang em if you got em Link to comment Share on other sites More sharing options...
03flairside Posted March 14, 2011 Report Share Posted March 14, 2011 check the throttle body, when mine went bad my truck would do the same thing Quote Link to comment Share on other sites More sharing options...
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