Lights dim and engine cuts out at low revs

D15, D16, D17 and Mini-Me swaps
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Lights dim and engine cuts out at low revs

By LaMbErT*
- Fri Nov 28, 2008 12:01 pm #80725 Anyone know what could cause this ? In higher revs the dash lights show back up ? It chugs alot in low revs too...
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By suspendedHatch
- Fri Nov 28, 2008 5:27 pm #80744 When your RPM's dip too low, the alternator isn't spinning fast enough to charge the battery, so your operating voltage drops.

Maybe your IACV is clogged up. When the rad fan kicks on it's stalling you out.
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By LaMbErT*
- Sat Nov 29, 2008 11:40 am #80825 IACV ?

and were talking about 1 and a half to 2 thousand revs when the lights are dimming and then it eventually cuts out when it goes lower, im hoping the altenator aint fooked that'll be the third one id have to get obv i hadn't got them from honda but the altenators i got came off d-series that were working before :(
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By biretsu89
- Sat Nov 29, 2008 12:05 pm #80828 well you can pulll off your alternator and take to to like kragen or pep boys and they can check the alternator for free :thumb:
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By teal_dx
- Sat Nov 29, 2008 3:23 pm #80836 I was thinking a couple hundred RPM when you said Low. 1500-200 is pretty high. assuming you have no CEL? If you have already gone through 3 alternators, I might examine your wiring. First thing to do is check the alternator fuse in your under dash fuse box (driver's side) It is a 7.5A fuse that controls the alternator. If it is blown, the alt will not charge the battery and all the lights will dim in/out.
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By LaMbErT*
- Sat Nov 29, 2008 4:55 pm #80857 Fuses are fine ill just get an altenator from pentland components and c if that works everythings going good with the car apart from that its not got alot to go afore its mot now :)
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By suspendedHatch
- Sun Nov 30, 2008 9:26 pm #81148 At this point I'd recommend having it professionally diagnosed. No point in blowing more money on it doing it yourself and not fixing it. You're beyond the point of saving money now, right?
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