Ryan_Kao Posted August 30, 2013 Report Share Posted August 30, 2013 I'm having quite a simiar problem but with a stock alt. Any ideas??? So worried i might have to replace it. I'm on such a tight budget for my current build.When my car is just idling. voltage rests about 12.1-12.4. Then as soon as im up in the 800-1000 RPM range, its like the alternator finally kicks in and my voltage goes right up to 13.3-14. Build in progress: -Pioneer Premiere DEH-P49OIB _Kenwood Excelon KFCX173 6.75" -Kenwood KFC-1094PS 4" -DB Link 4AWG -Soundstream DTR1.900D -Obsidian Audio v2 12" D2 @1ohm -L-Port, 2.5cubes @32hz CHECK ME OUT ON YOUTUBE Link to comment Share on other sites More sharing options...
RMac18 Posted August 30, 2013 Report Share Posted August 30, 2013 Your idle rpm's seem low even for a cavalier. Is it and auto or manual? I'm assuming it's auto to be idling that low. Mine idles just around 600 rpm or so once its warmed up which is about normal for at least the auto 03+ ecotec's. Perhaps you have a bigger issue if your only idling at 400 rpm? No rough idle or anything else? Link to comment Share on other sites More sharing options...
Sergeant_Skyrim Posted August 30, 2013 Author Report Share Posted August 30, 2013 Your idle rpm's seem low even for a cavalier. Is it and auto or manual? I'm assuming it's auto to be idling that low. Mine idles just around 600 rpm or so once its warmed up which is about normal for at least the auto 03+ ecotec's. Perhaps you have a bigger issue if your only idling at 400 rpm? No rough idle or anything else? Yeah, it's automatic. 2003 Chevy Cavalier 2.2L Ecotech engine. It idles around 4-500 rpms don't have an exact number. Don't have any other noticeable problems though and it's got about 183 or 184k on the original engine Build in progress Link to comment Share on other sites More sharing options...
Tarball Posted August 30, 2013 Report Share Posted August 30, 2013 Im not telling you to do this, but if it were my ride, i would bump the idle speed up a bit. CURRENT SYSTEM: Alternator: Stock alt on mids/highs Isolated DC Power 270 SP - Charging @ 16.8v Batteries: (2) XS D1400s Power Cable: Double Runs of 1/0 KNU Kolossus Fleks Headunit: 80-PRS Sub Amp: DC 5.0k Subwoofers: 2 RE MT 15s /PSI dual .7ohm recones Subwoofer Enclosure: 9.1cubes @ 32hz - brutal. Mids & Highs Amp: CT125.4 Active Components: Mids RE XXX 6.5c Highs - 3 RE XXX tweeters per side(A pillar) Noise Control: Damplifier Pro all over the cab. Build Log If you do business with me please leave feedback here: FEEDBACK THREAD Highest Legal Score: 151.0 db Highest Musical 30 Second Average: 151.6 db Link to comment Share on other sites More sharing options...
Sergeant_Skyrim Posted August 30, 2013 Author Report Share Posted August 30, 2013 Im not telling you to do this, but if it were my ride, i would bump the idle speed up a bit. See I really wanted to do this, but I don't quite know how I'd do it to my engine. If I can figure out how to then I definitely will. I know TaylorFade made this video that shows for his CRX, but I couldn't find anything like that on my engine. And every mechanic place I've asked about it has no clue how to bump up the idle rpms either http://www.youtube.com/watch?v=GZ66-5PydJA Build in progress Link to comment Share on other sites More sharing options...
finkster Posted August 30, 2013 Report Share Posted August 30, 2013 The design of that alt not being centered around low idle is what is holding you back. You may be stuck on this one. DAT 4125------>RE XXX comps active Eclipse cd7000 I serve drunks for a living Link to comment Share on other sites More sharing options...
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